./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product26.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_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/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_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/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_6bf911be-dc95-4f34-adca-6bdbffead021/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 c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d --- 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 10:54:41,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:54:41,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:54:41,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:54:41,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:54:41,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:54:41,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:54:41,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:54:41,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:54:41,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:54:41,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:54:41,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:54:41,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:54:41,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:54:41,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:54:41,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:54:41,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:54:41,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:54:41,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:54:41,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:54:41,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:54:41,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:54:41,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:54:41,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:54:41,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:54:41,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:54:41,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:54:41,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:54:41,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:54:41,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:54:41,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:54:41,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:54:41,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:54:41,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:54:41,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:54:41,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:54:41,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:54:41,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:54:41,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:54:41,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:54:41,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:54:41,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 10:54:41,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:54:41,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:54:41,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:54:41,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:54:41,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:54:41,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:54:41,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:54:41,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:54:41,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:54:41,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:54:41,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:54:41,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:54:41,208 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:54:41,208 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_6bf911be-dc95-4f34-adca-6bdbffead021/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d [2022-12-13 10:54:41,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:54:41,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:54:41,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:54:41,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:54:41,409 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:54:41,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2022-12-13 10:54:44,055 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:54:44,280 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:54:44,280 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2022-12-13 10:54:44,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/data/7c5e7f58d/6deded168c6a4fd29d1050f91e881d7f/FLAGd184b7dd2 [2022-12-13 10:54:44,313 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/data/7c5e7f58d/6deded168c6a4fd29d1050f91e881d7f [2022-12-13 10:54:44,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:54:44,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:54:44,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:54:44,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:54:44,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:54:44,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f6c104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44, skipping insertion in model container [2022-12-13 10:54:44,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:54:44,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:54:44,676 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_6bf911be-dc95-4f34-adca-6bdbffead021/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c[70298,70311] [2022-12-13 10:54:44,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:54:44,704 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:54:44,792 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_6bf911be-dc95-4f34-adca-6bdbffead021/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c[70298,70311] [2022-12-13 10:54:44,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:54:44,812 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:54:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44 WrapperNode [2022-12-13 10:54:44,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:54:44,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:54:44,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:54:44,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:54:44,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,869 INFO L138 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 861 [2022-12-13 10:54:44,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:54:44,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:54:44,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:54:44,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:54:44,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:54:44,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:54:44,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:54:44,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:54:44,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (1/1) ... [2022-12-13 10:54:44,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:54:44,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:54:44,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:54:44,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:54:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:54:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 10:54:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 10:54:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 10:54:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 10:54:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 10:54:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 10:54:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 10:54:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 10:54:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 10:54:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 10:54:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 10:54:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 10:54:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 10:54:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 10:54:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 10:54:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 10:54:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 10:54:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 10:54:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 10:54:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 10:54:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 10:54:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 10:54:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 10:54:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 10:54:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 10:54:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 10:54:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 10:54:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 10:54:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-12-13 10:54:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-12-13 10:54:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 10:54:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 10:54:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 10:54:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 10:54:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 10:54:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 10:54:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:54:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 10:54:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 10:54:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 10:54:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 10:54:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 10:54:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 10:54:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:54:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:54:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 10:54:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 10:54:45,093 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:54:45,095 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:54:45,839 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:54:45,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:54:45,848 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 10:54:45,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:54:45 BoogieIcfgContainer [2022-12-13 10:54:45,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:54:45,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:54:45,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:54:45,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:54:45,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:54:44" (1/3) ... [2022-12-13 10:54:45,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b1e88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:54:45, skipping insertion in model container [2022-12-13 10:54:45,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:54:44" (2/3) ... [2022-12-13 10:54:45,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b1e88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:54:45, skipping insertion in model container [2022-12-13 10:54:45,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:54:45" (3/3) ... [2022-12-13 10:54:45,855 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product26.cil.c [2022-12-13 10:54:45,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:54:45,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 10:54:45,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:54:45,940 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;@261ceaf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:54:45,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 10:54:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 435 states have (on average 1.7080459770114942) internal successors, (743), 458 states have internal predecessors, (743), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 10:54:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 10:54:45,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:54:45,958 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] [2022-12-13 10:54:45,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:54:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:54:45,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1191959459, now seen corresponding path program 1 times [2022-12-13 10:54:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:54:45,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707384474] [2022-12-13 10:54:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:54:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:54:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:54:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 10:54:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 10:54:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:46,632 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 10:54:46,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:54:46,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707384474] [2022-12-13 10:54:46,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707384474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:54:46,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:54:46,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:54:46,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783991818] [2022-12-13 10:54:46,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:54:46,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:54:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:54:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:54:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:54:46,670 INFO L87 Difference]: Start difference. First operand has 550 states, 435 states have (on average 1.7080459770114942) internal successors, (743), 458 states have internal predecessors, (743), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:54:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:54:51,484 INFO L93 Difference]: Finished difference Result 1242 states and 2117 transitions. [2022-12-13 10:54:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:54:51,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-12-13 10:54:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:54:51,507 INFO L225 Difference]: With dead ends: 1242 [2022-12-13 10:54:51,507 INFO L226 Difference]: Without dead ends: 704 [2022-12-13 10:54:51,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:54:51,519 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 688 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 10:54:51,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1256 Invalid, 2886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 10:54:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-13 10:54:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-12-13 10:54:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.7039627039627039) internal successors, (731), 450 states have internal predecessors, (731), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:54:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 908 transitions. [2022-12-13 10:54:51,677 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 908 transitions. Word has length 56 [2022-12-13 10:54:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:54:51,677 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 908 transitions. [2022-12-13 10:54:51,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:54:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 908 transitions. [2022-12-13 10:54:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 10:54:51,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:54:51,680 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] [2022-12-13 10:54:51,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:54:51,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:54:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:54:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash -234968581, now seen corresponding path program 1 times [2022-12-13 10:54:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:54:51,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357757876] [2022-12-13 10:54:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:54:51,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:54:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:54:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:54:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 10:54:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:52,033 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 10:54:52,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:54:52,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357757876] [2022-12-13 10:54:52,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357757876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:54:52,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:54:52,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:54:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909012] [2022-12-13 10:54:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:54:52,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:54:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:54:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:54:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:54:52,036 INFO L87 Difference]: Start difference. First operand 542 states and 908 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:54:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:54:55,901 INFO L93 Difference]: Finished difference Result 1228 states and 2083 transitions. [2022-12-13 10:54:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:54:55,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-12-13 10:54:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:54:55,908 INFO L225 Difference]: With dead ends: 1228 [2022-12-13 10:54:55,908 INFO L226 Difference]: Without dead ends: 704 [2022-12-13 10:54:55,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:54:55,911 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1109 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 10:54:55,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 1214 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 10:54:55,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-13 10:54:55,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-12-13 10:54:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.7016317016317015) internal successors, (730), 450 states have internal predecessors, (730), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:54:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 907 transitions. [2022-12-13 10:54:55,979 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 907 transitions. Word has length 59 [2022-12-13 10:54:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:54:55,979 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 907 transitions. [2022-12-13 10:54:55,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:54:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 907 transitions. [2022-12-13 10:54:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 10:54:55,981 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:54:55,981 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] [2022-12-13 10:54:55,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:54:55,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:54:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:54:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1694067341, now seen corresponding path program 1 times [2022-12-13 10:54:55,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:54:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539150499] [2022-12-13 10:54:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:54:55,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:54:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:54:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 10:54:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 10:54:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:54:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:54:56,269 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 10:54:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:54:56,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539150499] [2022-12-13 10:54:56,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539150499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:54:56,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:54:56,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:54:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496720269] [2022-12-13 10:54:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:54:56,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:54:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:54:56,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:54:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:54:56,271 INFO L87 Difference]: Start difference. First operand 542 states and 907 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:00,167 INFO L93 Difference]: Finished difference Result 1228 states and 2082 transitions. [2022-12-13 10:55:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-12-13 10:55:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:00,173 INFO L225 Difference]: With dead ends: 1228 [2022-12-13 10:55:00,173 INFO L226 Difference]: Without dead ends: 704 [2022-12-13 10:55:00,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:00,175 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1106 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:00,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1208 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 10:55:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-13 10:55:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-12-13 10:55:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6993006993006994) internal successors, (729), 450 states have internal predecessors, (729), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:55:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 906 transitions. [2022-12-13 10:55:00,233 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 906 transitions. Word has length 60 [2022-12-13 10:55:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:00,233 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 906 transitions. [2022-12-13 10:55:00,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 906 transitions. [2022-12-13 10:55:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 10:55:00,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:00,234 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] [2022-12-13 10:55:00,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:55:00,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:00,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash -119910537, now seen corresponding path program 1 times [2022-12-13 10:55:00,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:00,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607015932] [2022-12-13 10:55:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 10:55:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 10:55:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:00,518 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 10:55:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:00,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607015932] [2022-12-13 10:55:00,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607015932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:00,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:00,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569936898] [2022-12-13 10:55:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:00,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:00,519 INFO L87 Difference]: Start difference. First operand 542 states and 906 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:04,418 INFO L93 Difference]: Finished difference Result 1228 states and 2081 transitions. [2022-12-13 10:55:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:04,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-12-13 10:55:04,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:04,424 INFO L225 Difference]: With dead ends: 1228 [2022-12-13 10:55:04,424 INFO L226 Difference]: Without dead ends: 704 [2022-12-13 10:55:04,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:04,426 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1104 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:04,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1199 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 10:55:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-13 10:55:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-12-13 10:55:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.696969696969697) internal successors, (728), 450 states have internal predecessors, (728), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:55:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 905 transitions. [2022-12-13 10:55:04,490 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 905 transitions. Word has length 61 [2022-12-13 10:55:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:04,490 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 905 transitions. [2022-12-13 10:55:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 905 transitions. [2022-12-13 10:55:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 10:55:04,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:04,491 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] [2022-12-13 10:55:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:55:04,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 995888239, now seen corresponding path program 1 times [2022-12-13 10:55:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:04,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022833398] [2022-12-13 10:55:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 10:55:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 10:55:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:04,750 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 10:55:04,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022833398] [2022-12-13 10:55:04,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022833398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:04,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:04,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:04,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234419700] [2022-12-13 10:55:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:04,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:04,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:04,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:04,752 INFO L87 Difference]: Start difference. First operand 542 states and 905 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:08,539 INFO L93 Difference]: Finished difference Result 1228 states and 2080 transitions. [2022-12-13 10:55:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:08,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-12-13 10:55:08,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:08,543 INFO L225 Difference]: With dead ends: 1228 [2022-12-13 10:55:08,543 INFO L226 Difference]: Without dead ends: 704 [2022-12-13 10:55:08,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:08,546 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1102 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:08,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1187 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 10:55:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-13 10:55:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-12-13 10:55:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6946386946386947) internal successors, (727), 450 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:55:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 904 transitions. [2022-12-13 10:55:08,658 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 904 transitions. Word has length 62 [2022-12-13 10:55:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:08,658 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 904 transitions. [2022-12-13 10:55:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 904 transitions. [2022-12-13 10:55:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 10:55:08,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:08,660 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] [2022-12-13 10:55:08,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:55:08,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash 787490035, now seen corresponding path program 1 times [2022-12-13 10:55:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128602474] [2022-12-13 10:55:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 10:55:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:09,036 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 10:55:09,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:09,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128602474] [2022-12-13 10:55:09,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128602474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:09,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:09,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:55:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316823795] [2022-12-13 10:55:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:09,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 10:55:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 10:55:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:55:09,039 INFO L87 Difference]: Start difference. First operand 542 states and 904 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:13,644 INFO L93 Difference]: Finished difference Result 1205 states and 2030 transitions. [2022-12-13 10:55:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 10:55:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-12-13 10:55:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:13,650 INFO L225 Difference]: With dead ends: 1205 [2022-12-13 10:55:13,650 INFO L226 Difference]: Without dead ends: 730 [2022-12-13 10:55:13,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-13 10:55:13,653 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1210 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 4831 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 4831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:13,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 2147 Invalid, 5089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [258 Valid, 4831 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 10:55:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-12-13 10:55:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 555. [2022-12-13 10:55:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6902050113895217) internal successors, (742), 462 states have internal predecessors, (742), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 923 transitions. [2022-12-13 10:55:13,731 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 923 transitions. Word has length 63 [2022-12-13 10:55:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:13,731 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 923 transitions. [2022-12-13 10:55:13,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 923 transitions. [2022-12-13 10:55:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 10:55:13,733 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:13,733 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] [2022-12-13 10:55:13,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:55:13,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash -395857262, now seen corresponding path program 1 times [2022-12-13 10:55:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140641191] [2022-12-13 10:55:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 10:55:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:14,022 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 10:55:14,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:14,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140641191] [2022-12-13 10:55:14,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140641191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:14,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:14,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:14,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052782174] [2022-12-13 10:55:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:14,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:14,024 INFO L87 Difference]: Start difference. First operand 555 states and 923 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:17,636 INFO L93 Difference]: Finished difference Result 1219 states and 2053 transitions. [2022-12-13 10:55:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:55:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-12-13 10:55:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:17,645 INFO L225 Difference]: With dead ends: 1219 [2022-12-13 10:55:17,645 INFO L226 Difference]: Without dead ends: 726 [2022-12-13 10:55:17,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:17,647 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1196 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:17,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1179 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 10:55:17,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-12-13 10:55:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-12-13 10:55:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6788154897494305) internal successors, (737), 462 states have internal predecessors, (737), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 918 transitions. [2022-12-13 10:55:17,713 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 918 transitions. Word has length 63 [2022-12-13 10:55:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:17,713 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 918 transitions. [2022-12-13 10:55:17,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 918 transitions. [2022-12-13 10:55:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 10:55:17,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:17,715 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] [2022-12-13 10:55:17,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:55:17,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2081575077, now seen corresponding path program 1 times [2022-12-13 10:55:17,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:17,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242268434] [2022-12-13 10:55:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 10:55:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:17,946 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 10:55:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:17,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242268434] [2022-12-13 10:55:17,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242268434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:17,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:17,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788071905] [2022-12-13 10:55:17,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:17,948 INFO L87 Difference]: Start difference. First operand 555 states and 918 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:22,183 INFO L93 Difference]: Finished difference Result 1219 states and 2048 transitions. [2022-12-13 10:55:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:55:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-12-13 10:55:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:22,188 INFO L225 Difference]: With dead ends: 1219 [2022-12-13 10:55:22,188 INFO L226 Difference]: Without dead ends: 726 [2022-12-13 10:55:22,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:22,190 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 765 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2663 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:22,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1187 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2663 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 10:55:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-12-13 10:55:22,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-12-13 10:55:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6674259681093395) internal successors, (732), 462 states have internal predecessors, (732), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 913 transitions. [2022-12-13 10:55:22,261 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 913 transitions. Word has length 64 [2022-12-13 10:55:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:22,261 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 913 transitions. [2022-12-13 10:55:22,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:22,262 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 913 transitions. [2022-12-13 10:55:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 10:55:22,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:22,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:55:22,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1254115639, now seen corresponding path program 1 times [2022-12-13 10:55:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594307209] [2022-12-13 10:55:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 10:55:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,512 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 10:55:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594307209] [2022-12-13 10:55:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594307209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:22,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:22,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021656450] [2022-12-13 10:55:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:22,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:22,513 INFO L87 Difference]: Start difference. First operand 555 states and 913 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:26,186 INFO L93 Difference]: Finished difference Result 1219 states and 2043 transitions. [2022-12-13 10:55:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:55:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-12-13 10:55:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:26,192 INFO L225 Difference]: With dead ends: 1219 [2022-12-13 10:55:26,192 INFO L226 Difference]: Without dead ends: 726 [2022-12-13 10:55:26,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:26,194 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 770 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:26,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1191 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 10:55:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-12-13 10:55:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-12-13 10:55:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 462 states have internal predecessors, (727), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 908 transitions. [2022-12-13 10:55:26,270 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 908 transitions. Word has length 65 [2022-12-13 10:55:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:26,270 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 908 transitions. [2022-12-13 10:55:26,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 908 transitions. [2022-12-13 10:55:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 10:55:26,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:26,271 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] [2022-12-13 10:55:26,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 10:55:26,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:26,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1915797430, now seen corresponding path program 1 times [2022-12-13 10:55:26,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:26,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838788342] [2022-12-13 10:55:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:26,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 10:55:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,567 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 10:55:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:26,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838788342] [2022-12-13 10:55:26,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838788342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:26,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:26,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:55:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844494757] [2022-12-13 10:55:26,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 10:55:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 10:55:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:55:26,568 INFO L87 Difference]: Start difference. First operand 555 states and 908 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:31,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:31,215 INFO L93 Difference]: Finished difference Result 1211 states and 2020 transitions. [2022-12-13 10:55:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 10:55:31,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-12-13 10:55:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:31,218 INFO L225 Difference]: With dead ends: 1211 [2022-12-13 10:55:31,218 INFO L226 Difference]: Without dead ends: 733 [2022-12-13 10:55:31,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 10:55:31,220 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1195 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 4708 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 4708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:31,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 2116 Invalid, 4969 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 4708 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 10:55:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-12-13 10:55:31,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 555. [2022-12-13 10:55:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.65375854214123) internal successors, (726), 462 states have internal predecessors, (726), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 907 transitions. [2022-12-13 10:55:31,290 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 907 transitions. Word has length 66 [2022-12-13 10:55:31,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:31,291 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 907 transitions. [2022-12-13 10:55:31,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 907 transitions. [2022-12-13 10:55:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 10:55:31,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:31,292 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] [2022-12-13 10:55:31,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 10:55:31,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1054226218, now seen corresponding path program 1 times [2022-12-13 10:55:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:31,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335126512] [2022-12-13 10:55:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 10:55:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,536 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 10:55:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:31,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335126512] [2022-12-13 10:55:31,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335126512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:31,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:31,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:31,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864372630] [2022-12-13 10:55:31,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:31,537 INFO L87 Difference]: Start difference. First operand 555 states and 907 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:35,286 INFO L93 Difference]: Finished difference Result 1219 states and 2035 transitions. [2022-12-13 10:55:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:55:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-12-13 10:55:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:35,289 INFO L225 Difference]: With dead ends: 1219 [2022-12-13 10:55:35,289 INFO L226 Difference]: Without dead ends: 726 [2022-12-13 10:55:35,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:35,291 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 764 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:35,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1162 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2619 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 10:55:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-12-13 10:55:35,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 555. [2022-12-13 10:55:35,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.642369020501139) internal successors, (721), 462 states have internal predecessors, (721), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 902 transitions. [2022-12-13 10:55:35,363 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 902 transitions. Word has length 66 [2022-12-13 10:55:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:35,363 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 902 transitions. [2022-12-13 10:55:35,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 902 transitions. [2022-12-13 10:55:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 10:55:35,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:35,364 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] [2022-12-13 10:55:35,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 10:55:35,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1642721594, now seen corresponding path program 1 times [2022-12-13 10:55:35,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:35,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007410619] [2022-12-13 10:55:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:35,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 10:55:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:35,661 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 10:55:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:35,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007410619] [2022-12-13 10:55:35,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007410619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:35,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:35,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:55:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923113590] [2022-12-13 10:55:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:35,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 10:55:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 10:55:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:55:35,663 INFO L87 Difference]: Start difference. First operand 555 states and 902 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:40,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:40,960 INFO L93 Difference]: Finished difference Result 1232 states and 2045 transitions. [2022-12-13 10:55:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 10:55:40,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2022-12-13 10:55:40,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:40,964 INFO L225 Difference]: With dead ends: 1232 [2022-12-13 10:55:40,964 INFO L226 Difference]: Without dead ends: 751 [2022-12-13 10:55:40,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 10:55:40,966 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1190 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 4676 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 4937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 4676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:40,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 2129 Invalid, 4937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 4676 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 10:55:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-12-13 10:55:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 558. [2022-12-13 10:55:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 442 states have (on average 1.6357466063348416) internal successors, (723), 465 states have internal predecessors, (723), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2022-12-13 10:55:41,041 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 67 [2022-12-13 10:55:41,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:41,041 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2022-12-13 10:55:41,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2022-12-13 10:55:41,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 10:55:41,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:41,042 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] [2022-12-13 10:55:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 10:55:41,042 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1165829156, now seen corresponding path program 1 times [2022-12-13 10:55:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:41,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133028683] [2022-12-13 10:55:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:41,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 10:55:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:41,288 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 10:55:41,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:41,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133028683] [2022-12-13 10:55:41,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133028683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:41,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:41,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308409723] [2022-12-13 10:55:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:41,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:41,289 INFO L87 Difference]: Start difference. First operand 558 states and 904 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:45,083 INFO L93 Difference]: Finished difference Result 1228 states and 2036 transitions. [2022-12-13 10:55:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:55:45,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2022-12-13 10:55:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:45,088 INFO L225 Difference]: With dead ends: 1228 [2022-12-13 10:55:45,088 INFO L226 Difference]: Without dead ends: 732 [2022-12-13 10:55:45,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:45,089 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1181 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:45,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1169 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 10:55:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-12-13 10:55:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 558. [2022-12-13 10:55:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 465 states have internal predecessors, (718), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 899 transitions. [2022-12-13 10:55:45,156 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 899 transitions. Word has length 67 [2022-12-13 10:55:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:45,157 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 899 transitions. [2022-12-13 10:55:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 899 transitions. [2022-12-13 10:55:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 10:55:45,158 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:45,158 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] [2022-12-13 10:55:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 10:55:45,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1936490447, now seen corresponding path program 1 times [2022-12-13 10:55:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:45,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071179113] [2022-12-13 10:55:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 10:55:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:45,458 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 10:55:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071179113] [2022-12-13 10:55:45,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071179113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:45,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:45,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:55:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454604673] [2022-12-13 10:55:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 10:55:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 10:55:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:55:45,459 INFO L87 Difference]: Start difference. First operand 558 states and 899 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:50,963 INFO L93 Difference]: Finished difference Result 1238 states and 2042 transitions. [2022-12-13 10:55:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 10:55:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-12-13 10:55:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:50,966 INFO L225 Difference]: With dead ends: 1238 [2022-12-13 10:55:50,966 INFO L226 Difference]: Without dead ends: 757 [2022-12-13 10:55:50,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 10:55:50,967 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 751 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 4801 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 4931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 4801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:50,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2097 Invalid, 4931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 4801 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 10:55:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-12-13 10:55:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 562. [2022-12-13 10:55:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 446 states have (on average 1.616591928251121) internal successors, (721), 469 states have internal predecessors, (721), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2022-12-13 10:55:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 902 transitions. [2022-12-13 10:55:51,047 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 902 transitions. Word has length 68 [2022-12-13 10:55:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:51,047 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 902 transitions. [2022-12-13 10:55:51,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 902 transitions. [2022-12-13 10:55:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 10:55:51,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:51,048 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] [2022-12-13 10:55:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 10:55:51,049 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1586519633, now seen corresponding path program 1 times [2022-12-13 10:55:51,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:51,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726298170] [2022-12-13 10:55:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 10:55:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:51,308 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 10:55:51,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:51,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726298170] [2022-12-13 10:55:51,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726298170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:51,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:51,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:55:51,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101226593] [2022-12-13 10:55:51,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:51,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:51,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:51,310 INFO L87 Difference]: Start difference. First operand 562 states and 902 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:55,094 INFO L93 Difference]: Finished difference Result 1276 states and 2081 transitions. [2022-12-13 10:55:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:55,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-12-13 10:55:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:55,097 INFO L225 Difference]: With dead ends: 1276 [2022-12-13 10:55:55,097 INFO L226 Difference]: Without dead ends: 712 [2022-12-13 10:55:55,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:55:55,099 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 671 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:55,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1174 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 10:55:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-12-13 10:55:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 543. [2022-12-13 10:55:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 430 states have (on average 1.6255813953488372) internal successors, (699), 451 states have internal predecessors, (699), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:55:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 876 transitions. [2022-12-13 10:55:55,190 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 876 transitions. Word has length 68 [2022-12-13 10:55:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:55:55,190 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 876 transitions. [2022-12-13 10:55:55,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:55:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 876 transitions. [2022-12-13 10:55:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 10:55:55,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:55:55,191 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] [2022-12-13 10:55:55,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 10:55:55,191 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:55:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash -192748193, now seen corresponding path program 1 times [2022-12-13 10:55:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:55,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178011069] [2022-12-13 10:55:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:55:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:55:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 10:55:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:55:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:55,490 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 10:55:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:55,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178011069] [2022-12-13 10:55:55,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178011069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:55,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:55,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:55:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971413698] [2022-12-13 10:55:55,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:55,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 10:55:55,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 10:55:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:55:55,492 INFO L87 Difference]: Start difference. First operand 543 states and 876 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:55:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:55:59,967 INFO L93 Difference]: Finished difference Result 1211 states and 1996 transitions. [2022-12-13 10:55:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 10:55:59,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 69 [2022-12-13 10:55:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:55:59,970 INFO L225 Difference]: With dead ends: 1211 [2022-12-13 10:55:59,970 INFO L226 Difference]: Without dead ends: 733 [2022-12-13 10:55:59,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 10:55:59,971 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1149 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 10:55:59,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 2073 Invalid, 4827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 4566 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 10:55:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-12-13 10:56:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 548. [2022-12-13 10:56:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 435 states have (on average 1.6183908045977011) internal successors, (704), 456 states have internal predecessors, (704), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:56:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 881 transitions. [2022-12-13 10:56:00,044 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 881 transitions. Word has length 69 [2022-12-13 10:56:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:00,044 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 881 transitions. [2022-12-13 10:56:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:56:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 881 transitions. [2022-12-13 10:56:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 10:56:00,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:00,045 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] [2022-12-13 10:56:00,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 10:56:00,045 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1606165726, now seen corresponding path program 1 times [2022-12-13 10:56:00,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:00,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93000243] [2022-12-13 10:56:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:00,284 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 10:56:00,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:00,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93000243] [2022-12-13 10:56:00,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93000243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:00,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:00,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:56:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189686015] [2022-12-13 10:56:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:00,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:56:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:56:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:56:00,285 INFO L87 Difference]: Start difference. First operand 548 states and 881 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:56:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:04,353 INFO L93 Difference]: Finished difference Result 1209 states and 1991 transitions. [2022-12-13 10:56:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 10:56:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-12-13 10:56:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:04,357 INFO L225 Difference]: With dead ends: 1209 [2022-12-13 10:56:04,357 INFO L226 Difference]: Without dead ends: 710 [2022-12-13 10:56:04,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:56:04,358 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1138 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:04,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1147 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 10:56:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-12-13 10:56:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 548. [2022-12-13 10:56:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 435 states have (on average 1.6091954022988506) internal successors, (700), 456 states have internal predecessors, (700), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 10:56:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 877 transitions. [2022-12-13 10:56:04,432 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 877 transitions. Word has length 70 [2022-12-13 10:56:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:04,432 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 877 transitions. [2022-12-13 10:56:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:56:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 877 transitions. [2022-12-13 10:56:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 10:56:04,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:04,433 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] [2022-12-13 10:56:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 10:56:04,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash -234358428, now seen corresponding path program 1 times [2022-12-13 10:56:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:04,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694870133] [2022-12-13 10:56:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:04,794 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 10:56:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694870133] [2022-12-13 10:56:04,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694870133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:04,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:04,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:56:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211862957] [2022-12-13 10:56:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 10:56:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 10:56:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:56:04,795 INFO L87 Difference]: Start difference. First operand 548 states and 877 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:56:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:13,515 INFO L93 Difference]: Finished difference Result 1937 states and 3278 transitions. [2022-12-13 10:56:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 10:56:13,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2022-12-13 10:56:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:13,523 INFO L225 Difference]: With dead ends: 1937 [2022-12-13 10:56:13,523 INFO L226 Difference]: Without dead ends: 1467 [2022-12-13 10:56:13,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-12-13 10:56:13,525 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2918 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 6096 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 7055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 6096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:13,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 1678 Invalid, 7055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [959 Valid, 6096 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-13 10:56:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-12-13 10:56:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1072. [2022-12-13 10:56:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 842 states have (on average 1.6211401425178147) internal successors, (1365), 881 states have internal predecessors, (1365), 183 states have call successors, (183), 45 states have call predecessors, (183), 46 states have return successors, (195), 171 states have call predecessors, (195), 178 states have call successors, (195) [2022-12-13 10:56:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1743 transitions. [2022-12-13 10:56:13,738 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1743 transitions. Word has length 70 [2022-12-13 10:56:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:13,738 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1743 transitions. [2022-12-13 10:56:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 10:56:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1743 transitions. [2022-12-13 10:56:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 10:56:13,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:13,739 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] [2022-12-13 10:56:13,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 10:56:13,739 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash 946338858, now seen corresponding path program 1 times [2022-12-13 10:56:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:13,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017538094] [2022-12-13 10:56:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:14,041 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 10:56:14,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:14,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017538094] [2022-12-13 10:56:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017538094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:14,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:14,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 10:56:14,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859236624] [2022-12-13 10:56:14,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:14,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 10:56:14,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 10:56:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:56:14,043 INFO L87 Difference]: Start difference. First operand 1072 states and 1743 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:56:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:18,768 INFO L93 Difference]: Finished difference Result 1490 states and 2478 transitions. [2022-12-13 10:56:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 10:56:18,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2022-12-13 10:56:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:18,774 INFO L225 Difference]: With dead ends: 1490 [2022-12-13 10:56:18,774 INFO L226 Difference]: Without dead ends: 1475 [2022-12-13 10:56:18,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-12-13 10:56:18,775 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2155 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 4015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:18,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2192 Valid, 1242 Invalid, 4015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 10:56:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2022-12-13 10:56:19,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1078. [2022-12-13 10:56:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 848 states have (on average 1.616745283018868) internal successors, (1371), 887 states have internal predecessors, (1371), 183 states have call successors, (183), 45 states have call predecessors, (183), 46 states have return successors, (195), 171 states have call predecessors, (195), 178 states have call successors, (195) [2022-12-13 10:56:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1749 transitions. [2022-12-13 10:56:19,014 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1749 transitions. Word has length 71 [2022-12-13 10:56:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:19,014 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1749 transitions. [2022-12-13 10:56:19,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 10:56:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1749 transitions. [2022-12-13 10:56:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 10:56:19,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:19,015 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] [2022-12-13 10:56:19,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 10:56:19,015 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2101647355, now seen corresponding path program 1 times [2022-12-13 10:56:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:19,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708343115] [2022-12-13 10:56:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:56:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:19,327 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 10:56:19,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:19,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708343115] [2022-12-13 10:56:19,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708343115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:19,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:19,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:56:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697932384] [2022-12-13 10:56:19,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:19,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:56:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:56:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:56:19,329 INFO L87 Difference]: Start difference. First operand 1078 states and 1749 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 10:56:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:26,308 INFO L93 Difference]: Finished difference Result 3652 states and 6196 transitions. [2022-12-13 10:56:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:56:26,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-12-13 10:56:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:26,318 INFO L225 Difference]: With dead ends: 3652 [2022-12-13 10:56:26,319 INFO L226 Difference]: Without dead ends: 2652 [2022-12-13 10:56:26,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:56:26,321 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 2036 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:26,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 1126 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-12-13 10:56:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2022-12-13 10:56:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2155. [2022-12-13 10:56:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1672 states have (on average 1.6345693779904307) internal successors, (2733), 1755 states have internal predecessors, (2733), 387 states have call successors, (387), 85 states have call predecessors, (387), 95 states have return successors, (477), 371 states have call predecessors, (477), 382 states have call successors, (477) [2022-12-13 10:56:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3597 transitions. [2022-12-13 10:56:26,818 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3597 transitions. Word has length 77 [2022-12-13 10:56:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 2155 states and 3597 transitions. [2022-12-13 10:56:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 10:56:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3597 transitions. [2022-12-13 10:56:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 10:56:26,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:26,819 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] [2022-12-13 10:56:26,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 10:56:26,819 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash -726687699, now seen corresponding path program 1 times [2022-12-13 10:56:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:26,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475972316] [2022-12-13 10:56:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:26,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:56:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:27,161 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 10:56:27,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475972316] [2022-12-13 10:56:27,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475972316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:27,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:27,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 10:56:27,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722508230] [2022-12-13 10:56:27,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:27,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:56:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:56:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:56:27,163 INFO L87 Difference]: Start difference. First operand 2155 states and 3597 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:56:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:36,389 INFO L93 Difference]: Finished difference Result 8181 states and 14485 transitions. [2022-12-13 10:56:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:56:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 78 [2022-12-13 10:56:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:36,415 INFO L225 Difference]: With dead ends: 8181 [2022-12-13 10:56:36,415 INFO L226 Difference]: Without dead ends: 6112 [2022-12-13 10:56:36,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-12-13 10:56:36,422 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 4190 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 1175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1175 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:36,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 1692 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1175 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-13 10:56:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2022-12-13 10:56:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 4593. [2022-12-13 10:56:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4593 states, 3484 states have (on average 1.6337543053960963) internal successors, (5692), 3677 states have internal predecessors, (5692), 905 states have call successors, (905), 165 states have call predecessors, (905), 203 states have return successors, (1283), 889 states have call predecessors, (1283), 900 states have call successors, (1283) [2022-12-13 10:56:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4593 states to 4593 states and 7880 transitions. [2022-12-13 10:56:37,547 INFO L78 Accepts]: Start accepts. Automaton has 4593 states and 7880 transitions. Word has length 78 [2022-12-13 10:56:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:37,548 INFO L495 AbstractCegarLoop]: Abstraction has 4593 states and 7880 transitions. [2022-12-13 10:56:37,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:56:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4593 states and 7880 transitions. [2022-12-13 10:56:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 10:56:37,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:37,549 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] [2022-12-13 10:56:37,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 10:56:37,549 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1052607417, now seen corresponding path program 1 times [2022-12-13 10:56:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:37,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751651618] [2022-12-13 10:56:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:56:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:37,934 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 10:56:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:37,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751651618] [2022-12-13 10:56:37,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751651618] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:37,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:37,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 10:56:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201935654] [2022-12-13 10:56:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:56:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:56:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:56:37,936 INFO L87 Difference]: Start difference. First operand 4593 states and 7880 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:56:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:49,862 INFO L93 Difference]: Finished difference Result 18321 states and 34301 transitions. [2022-12-13 10:56:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:56:49,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 79 [2022-12-13 10:56:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:56:49,947 INFO L225 Difference]: With dead ends: 18321 [2022-12-13 10:56:49,947 INFO L226 Difference]: Without dead ends: 13822 [2022-12-13 10:56:49,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-12-13 10:56:49,973 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 4234 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 1224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4327 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1224 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-12-13 10:56:49,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4327 Valid, 1511 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1224 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-12-13 10:56:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2022-12-13 10:56:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 10076. [2022-12-13 10:56:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10076 states, 7459 states have (on average 1.6236760959914198) internal successors, (12111), 7919 states have internal predecessors, (12111), 2173 states have call successors, (2173), 325 states have call predecessors, (2173), 443 states have return successors, (3598), 2175 states have call predecessors, (3598), 2168 states have call successors, (3598) [2022-12-13 10:56:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10076 states to 10076 states and 17882 transitions. [2022-12-13 10:56:52,663 INFO L78 Accepts]: Start accepts. Automaton has 10076 states and 17882 transitions. Word has length 79 [2022-12-13 10:56:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:56:52,663 INFO L495 AbstractCegarLoop]: Abstraction has 10076 states and 17882 transitions. [2022-12-13 10:56:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:56:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 10076 states and 17882 transitions. [2022-12-13 10:56:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 10:56:52,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:52,665 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 10:56:52,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 10:56:52,665 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:56:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787119, now seen corresponding path program 1 times [2022-12-13 10:56:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:52,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725370127] [2022-12-13 10:56:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:56:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:56:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:56:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:56:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:56:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:52,965 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 10:56:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725370127] [2022-12-13 10:56:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725370127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:52,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:52,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 10:56:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572848690] [2022-12-13 10:56:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:56:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:56:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:56:52,967 INFO L87 Difference]: Start difference. First operand 10076 states and 17882 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:57:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:11,235 INFO L93 Difference]: Finished difference Result 42208 states and 85681 transitions. [2022-12-13 10:57:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:57:11,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2022-12-13 10:57:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:11,450 INFO L225 Difference]: With dead ends: 42208 [2022-12-13 10:57:11,450 INFO L226 Difference]: Without dead ends: 32242 [2022-12-13 10:57:11,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-12-13 10:57:11,508 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 3430 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3522 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:11,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3522 Valid, 1631 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-13 10:57:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32242 states. [2022-12-13 10:57:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32242 to 22685. [2022-12-13 10:57:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22685 states, 16362 states have (on average 1.6074440777411074) internal successors, (26301), 17478 states have internal predecessors, (26301), 5335 states have call successors, (5335), 645 states have call predecessors, (5335), 987 states have return successors, (10485), 5425 states have call predecessors, (10485), 5330 states have call successors, (10485) [2022-12-13 10:57:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22685 states to 22685 states and 42121 transitions. [2022-12-13 10:57:18,119 INFO L78 Accepts]: Start accepts. Automaton has 22685 states and 42121 transitions. Word has length 80 [2022-12-13 10:57:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:18,120 INFO L495 AbstractCegarLoop]: Abstraction has 22685 states and 42121 transitions. [2022-12-13 10:57:18,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:57:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 22685 states and 42121 transitions. [2022-12-13 10:57:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 10:57:18,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:18,121 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] [2022-12-13 10:57:18,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 10:57:18,122 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2052675721, now seen corresponding path program 1 times [2022-12-13 10:57:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:18,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430828380] [2022-12-13 10:57:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:18,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:57:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:57:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:57:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:57:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:57:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:57:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:57:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,416 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 10:57:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430828380] [2022-12-13 10:57:18,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430828380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:18,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:18,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 10:57:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711895253] [2022-12-13 10:57:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:18,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:18,417 INFO L87 Difference]: Start difference. First operand 22685 states and 42121 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:57:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:51,260 INFO L93 Difference]: Finished difference Result 99626 states and 226960 transitions. [2022-12-13 10:57:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:57:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 81 [2022-12-13 10:57:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:51,888 INFO L225 Difference]: With dead ends: 99626 [2022-12-13 10:57:51,888 INFO L226 Difference]: Without dead ends: 77069 [2022-12-13 10:57:52,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-12-13 10:57:52,045 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 4760 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 1454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1454 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:52,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 1237 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1454 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-12-13 10:57:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77069 states. [2022-12-13 10:58:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77069 to 52332. [2022-12-13 10:58:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52332 states, 36728 states have (on average 1.5870180788499237) internal successors, (58288), 39474 states have internal predecessors, (58288), 13355 states have call successors, (13355), 1283 states have call predecessors, (13355), 2248 states have return successors, (31729), 13774 states have call predecessors, (31729), 13350 states have call successors, (31729) [2022-12-13 10:58:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52332 states to 52332 states and 103372 transitions. [2022-12-13 10:58:08,792 INFO L78 Accepts]: Start accepts. Automaton has 52332 states and 103372 transitions. Word has length 81 [2022-12-13 10:58:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:08,792 INFO L495 AbstractCegarLoop]: Abstraction has 52332 states and 103372 transitions. [2022-12-13 10:58:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 10:58:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 52332 states and 103372 transitions. [2022-12-13 10:58:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 10:58:08,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:08,804 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:08,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 10:58:08,804 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:08,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1650366932, now seen corresponding path program 1 times [2022-12-13 10:58:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044699062] [2022-12-13 10:58:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:58:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:58:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 10:58:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 10:58:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:58:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:58:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:58:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 10:58:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 10:58:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:58:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 10:58:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 10:58:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 10:58:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 10:58:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 10:58:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 10:58:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 10:58:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 10:58:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 10:58:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 10:58:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 10:58:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 10:58:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 10:58:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 10:58:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 10:58:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 10:58:09,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:09,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044699062] [2022-12-13 10:58:09,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044699062] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:58:09,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448397442] [2022-12-13 10:58:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:58:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:58:09,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:58:09,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 10:58:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:09,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 10:58:09,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:58:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 10:58:10,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:58:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 10:58:10,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448397442] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:58:10,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:58:10,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 18 [2022-12-13 10:58:10,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523574418] [2022-12-13 10:58:10,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:58:10,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 10:58:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 10:58:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-12-13 10:58:10,340 INFO L87 Difference]: Start difference. First operand 52332 states and 103372 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 12 states have internal predecessors, (350), 9 states have call successors, (69), 12 states have call predecessors, (69), 8 states have return successors, (67), 9 states have call predecessors, (67), 9 states have call successors, (67) [2022-12-13 10:59:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:59:45,354 INFO L93 Difference]: Finished difference Result 236385 states and 615091 transitions. [2022-12-13 10:59:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 10:59:45,355 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 12 states have internal predecessors, (350), 9 states have call successors, (69), 12 states have call predecessors, (69), 8 states have return successors, (67), 9 states have call predecessors, (67), 9 states have call successors, (67) Word has length 226 [2022-12-13 10:59:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:59:47,616 INFO L225 Difference]: With dead ends: 236385 [2022-12-13 10:59:47,617 INFO L226 Difference]: Without dead ends: 184132 [2022-12-13 10:59:48,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 536 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1210, Invalid=3346, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 10:59:48,450 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 11507 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 11806 mSolverCounterSat, 4731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11546 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 16537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4731 IncrementalHoareTripleChecker+Valid, 11806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-12-13 10:59:48,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11546 Valid, 4037 Invalid, 16537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4731 Valid, 11806 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2022-12-13 10:59:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184132 states. [2022-12-13 11:00:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184132 to 90534. [2022-12-13 11:00:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90534 states, 67418 states have (on average 1.5987273428461242) internal successors, (107783), 71342 states have internal predecessors, (107783), 18849 states have call successors, (18849), 2598 states have call predecessors, (18849), 4266 states have return successors, (48445), 18794 states have call predecessors, (48445), 18844 states have call successors, (48445) [2022-12-13 11:00:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90534 states to 90534 states and 175077 transitions. [2022-12-13 11:00:22,472 INFO L78 Accepts]: Start accepts. Automaton has 90534 states and 175077 transitions. Word has length 226 [2022-12-13 11:00:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:00:22,472 INFO L495 AbstractCegarLoop]: Abstraction has 90534 states and 175077 transitions. [2022-12-13 11:00:22,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 12 states have internal predecessors, (350), 9 states have call successors, (69), 12 states have call predecessors, (69), 8 states have return successors, (67), 9 states have call predecessors, (67), 9 states have call successors, (67) [2022-12-13 11:00:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 90534 states and 175077 transitions. [2022-12-13 11:00:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 11:00:22,490 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:00:22,490 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:22,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:00:22,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 11:00:22,692 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:00:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:00:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1239118284, now seen corresponding path program 1 times [2022-12-13 11:00:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:00:22,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368808006] [2022-12-13 11:00:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:00:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:00:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:00:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:00:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:00:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:00:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:00:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:00:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:00:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:00:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 11:00:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:00:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:00:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 11:00:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 11:00:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:00:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:00:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 11:00:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:00:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:00:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 11:00:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:00:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:00:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 11:00:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 11:00:23,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:00:23,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368808006] [2022-12-13 11:00:23,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368808006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:00:23,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:00:23,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 11:00:23,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181931845] [2022-12-13 11:00:23,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:00:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:00:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:00:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:00:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:00:23,350 INFO L87 Difference]: Start difference. First operand 90534 states and 175077 transitions. Second operand has 12 states, 11 states have (on average 11.272727272727273) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 11:02:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:02:11,214 INFO L93 Difference]: Finished difference Result 297541 states and 872688 transitions. [2022-12-13 11:02:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:02:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.272727272727273) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 195 [2022-12-13 11:02:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:02:14,485 INFO L225 Difference]: With dead ends: 297541 [2022-12-13 11:02:14,485 INFO L226 Difference]: Without dead ends: 207086 [2022-12-13 11:02:15,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=393, Invalid=939, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 11:02:15,978 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 4410 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 8086 mSolverCounterSat, 2912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 10998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2912 IncrementalHoareTripleChecker+Valid, 8086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:02:15,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 3710 Invalid, 10998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2912 Valid, 8086 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-12-13 11:02:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207086 states. [2022-12-13 11:03:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207086 to 113047. [2022-12-13 11:03:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113047 states, 85380 states have (on average 1.5736589365190912) internal successors, (134359), 89696 states have internal predecessors, (134359), 22061 states have call successors, (22061), 3324 states have call predecessors, (22061), 5605 states have return successors, (70862), 22227 states have call predecessors, (70862), 22056 states have call successors, (70862) [2022-12-13 11:03:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113047 states to 113047 states and 227282 transitions. [2022-12-13 11:03:02,670 INFO L78 Accepts]: Start accepts. Automaton has 113047 states and 227282 transitions. Word has length 195 [2022-12-13 11:03:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:03:02,670 INFO L495 AbstractCegarLoop]: Abstraction has 113047 states and 227282 transitions. [2022-12-13 11:03:02,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.272727272727273) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 11:03:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 113047 states and 227282 transitions. [2022-12-13 11:03:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-12-13 11:03:02,691 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:03:02,691 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 11:03:02,691 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:03:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:03:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash 761746942, now seen corresponding path program 1 times [2022-12-13 11:03:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:03:02,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719108298] [2022-12-13 11:03:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:03:02,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:03:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:03:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:03:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:03:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:03:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:03:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:03:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:03:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:03:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 11:03:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:03:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:03:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 11:03:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 11:03:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:03:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:03:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:03:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 11:03:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:03:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:03:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:03:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 11:03:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:03:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-12-13 11:03:03,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:03:03,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719108298] [2022-12-13 11:03:03,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719108298] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:03:03,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788522320] [2022-12-13 11:03:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:03:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:03:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:03:03,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:03:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:03:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:03,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:03:03,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:03:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 11:03:03,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:03:03,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788522320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:03:03,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:03:03,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 11:03:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053331888] [2022-12-13 11:03:03,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:03:03,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:03:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:03:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:03:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:03:03,637 INFO L87 Difference]: Start difference. First operand 113047 states and 227282 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 11:03:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:03:42,141 INFO L93 Difference]: Finished difference Result 231085 states and 494672 transitions. [2022-12-13 11:03:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:03:42,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 197 [2022-12-13 11:03:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:03:43,132 INFO L225 Difference]: With dead ends: 231085 [2022-12-13 11:03:43,132 INFO L226 Difference]: Without dead ends: 118117 [2022-12-13 11:03:44,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:03:44,317 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 211 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:03:44,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2370 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:03:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118117 states. [2022-12-13 11:04:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118117 to 118117. [2022-12-13 11:04:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118117 states, 90320 states have (on average 1.5926594331266608) internal successors, (143849), 94636 states have internal predecessors, (143849), 22061 states have call successors, (22061), 3454 states have call predecessors, (22061), 5735 states have return successors, (70862), 22227 states have call predecessors, (70862), 22056 states have call successors, (70862) [2022-12-13 11:04:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118117 states to 118117 states and 236772 transitions. [2022-12-13 11:04:23,276 INFO L78 Accepts]: Start accepts. Automaton has 118117 states and 236772 transitions. Word has length 197 [2022-12-13 11:04:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:04:23,277 INFO L495 AbstractCegarLoop]: Abstraction has 118117 states and 236772 transitions. [2022-12-13 11:04:23,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 11:04:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 118117 states and 236772 transitions. [2022-12-13 11:04:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 11:04:23,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:04:23,404 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:23,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:04:23,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf911be-dc95-4f34-adca-6bdbffead021/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 11:04:23,605 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:04:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:04:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1350071776, now seen corresponding path program 1 times [2022-12-13 11:04:23,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:04:23,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886724117] [2022-12-13 11:04:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:04:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:04:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:04:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:04:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:04:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:04:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:04:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:04:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:04:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:04:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 11:04:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:04:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:04:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 11:04:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 11:04:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 11:04:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:04:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:04:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 11:04:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:04:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:04:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 11:04:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:04:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 11:04:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:04:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-13 11:04:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:04:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886724117] [2022-12-13 11:04:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886724117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:04:24,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:04:24,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:04:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322785384] [2022-12-13 11:04:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:04:24,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:04:24,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:04:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:04:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:04:24,308 INFO L87 Difference]: Start difference. First operand 118117 states and 236772 transitions. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (23), 8 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 11:06:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:06:11,028 INFO L93 Difference]: Finished difference Result 332586 states and 931611 transitions. [2022-12-13 11:06:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:06:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (23), 8 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 201 [2022-12-13 11:06:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:06:14,200 INFO L225 Difference]: With dead ends: 332586 [2022-12-13 11:06:14,200 INFO L226 Difference]: Without dead ends: 215568 [2022-12-13 11:06:15,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=367, Invalid=755, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 11:06:15,841 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 4541 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 5346 mSolverCounterSat, 2674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4541 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 8020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2674 IncrementalHoareTripleChecker+Valid, 5346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:06:15,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4541 Valid, 2570 Invalid, 8020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2674 Valid, 5346 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-12-13 11:06:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215568 states.