./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/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_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/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_126c875a-47ba-43ca-9a50-43403e97d29c/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 f4d752ef50871b3af82701ffcd8ca92c2975f63f8274731e1afbb137d2562986 --- 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 18:23:45,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:23:45,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:23:45,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:23:45,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:23:45,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:23:45,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:23:45,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:23:45,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:23:45,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:23:45,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:23:45,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:23:45,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:23:45,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:23:45,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:23:45,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:23:45,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:23:45,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:23:45,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:23:45,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:23:45,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:23:45,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:23:45,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:23:45,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:23:45,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:23:45,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:23:45,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:23:45,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:23:45,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:23:45,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:23:45,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:23:45,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:23:45,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:23:45,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:23:45,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:23:45,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:23:45,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:23:45,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:23:45,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:23:45,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:23:45,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:23:45,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:23:45,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:23:45,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:23:45,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:23:45,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:23:45,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:23:45,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:23:45,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:23:45,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:23:45,132 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:23:45,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:23:45,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:23:45,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:23:45,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:23:45,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:23:45,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:23:45,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:23:45,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:23:45,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:23:45,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:23:45,135 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:23:45,136 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_126c875a-47ba-43ca-9a50-43403e97d29c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4d752ef50871b3af82701ffcd8ca92c2975f63f8274731e1afbb137d2562986 [2022-12-13 18:23:45,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:23:45,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:23:45,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:23:45,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:23:45,338 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:23:45,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c [2022-12-13 18:23:47,921 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:23:48,113 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:23:48,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c [2022-12-13 18:23:48,126 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/data/293e056ba/77943529b7e44221a192289c004bfbf8/FLAG5bf93b9b2 [2022-12-13 18:23:48,137 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/data/293e056ba/77943529b7e44221a192289c004bfbf8 [2022-12-13 18:23:48,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:23:48,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:23:48,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:23:48,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:23:48,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:23:48,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b549e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48, skipping insertion in model container [2022-12-13 18:23:48,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:23:48,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:23:48,352 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_126c875a-47ba-43ca-9a50-43403e97d29c/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c[17414,17427] [2022-12-13 18:23:48,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:23:48,518 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:23:48,539 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_126c875a-47ba-43ca-9a50-43403e97d29c/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c[17414,17427] [2022-12-13 18:23:48,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:23:48,623 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:23:48,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48 WrapperNode [2022-12-13 18:23:48,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:23:48,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:23:48,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:23:48,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:23:48,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,686 INFO L138 Inliner]: procedures = 90, calls = 332, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 802 [2022-12-13 18:23:48,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:23:48,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:23:48,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:23:48,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:23:48,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:23:48,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:23:48,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:23:48,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:23:48,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (1/1) ... [2022-12-13 18:23:48,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:23:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:23:48,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:23:48,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 18:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 18:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 18:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 18:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 18:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 18:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 18:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 18:23:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 18:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 18:23:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 18:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 18:23:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 18:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 18:23:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 18:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 18:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 18:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 18:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 18:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 18:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 18:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 18:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 18:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 18:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 18:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 18:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 18:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 18:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 18:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 18:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 18:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 18:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 18:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 18:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 18:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 18:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 18:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 18:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 18:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 18:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:23:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 18:23:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 18:23:48,906 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:23:48,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:23:49,607 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:23:49,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:23:49,615 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:23:49,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:23:49 BoogieIcfgContainer [2022-12-13 18:23:49,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:23:49,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:23:49,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:23:49,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:23:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:23:48" (1/3) ... [2022-12-13 18:23:49,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b796068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:23:49, skipping insertion in model container [2022-12-13 18:23:49,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:48" (2/3) ... [2022-12-13 18:23:49,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b796068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:23:49, skipping insertion in model container [2022-12-13 18:23:49,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:23:49" (3/3) ... [2022-12-13 18:23:49,623 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2022-12-13 18:23:49,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:23:49,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:23:49,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:23:49,685 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;@17113ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:23:49,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:23:49,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 442 states have internal predecessors, (720), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-13 18:23:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 18:23:49,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:23:49,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:23:49,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:23:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:23:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1249329355, now seen corresponding path program 1 times [2022-12-13 18:23:49,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:23:49,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385936671] [2022-12-13 18:23:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:49,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:23:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:23:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:23:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:23:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:23:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:23:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:23:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:23:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 18:23:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:50,438 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 18:23:50,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:23:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385936671] [2022-12-13 18:23:50,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385936671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:23:50,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:23:50,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:23:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379542070] [2022-12-13 18:23:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:23:50,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:23:50,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:23:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:23:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:23:50,475 INFO L87 Difference]: Start difference. First operand has 532 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 442 states have internal predecessors, (720), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:23:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:23:57,165 INFO L93 Difference]: Finished difference Result 1504 states and 2610 transitions. [2022-12-13 18:23:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:23:57,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-12-13 18:23:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:23:57,182 INFO L225 Difference]: With dead ends: 1504 [2022-12-13 18:23:57,183 INFO L226 Difference]: Without dead ends: 984 [2022-12-13 18:23:57,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:23:57,191 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1786 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 4936 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 5727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 4936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:23:57,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 2848 Invalid, 5727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [791 Valid, 4936 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-13 18:23:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-12-13 18:23:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 526. [2022-12-13 18:23:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 417 states have (on average 1.7026378896882495) internal successors, (710), 436 states have internal predecessors, (710), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-12-13 18:23:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 881 transitions. [2022-12-13 18:23:57,344 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 881 transitions. Word has length 74 [2022-12-13 18:23:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:23:57,344 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 881 transitions. [2022-12-13 18:23:57,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:23:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 881 transitions. [2022-12-13 18:23:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 18:23:57,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:23:57,348 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 18:23:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:23:57,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:23:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:23:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash 498321993, now seen corresponding path program 1 times [2022-12-13 18:23:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:23:57,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715694774] [2022-12-13 18:23:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:23:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:23:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:23:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:23:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:23:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:23:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:23:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:23:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:23:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:57,780 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 18:23:57,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:23:57,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715694774] [2022-12-13 18:23:57,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715694774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:23:57,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:23:57,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:23:57,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164626884] [2022-12-13 18:23:57,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:23:57,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:23:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:23:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:23:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:23:57,784 INFO L87 Difference]: Start difference. First operand 526 states and 881 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:24:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:03,580 INFO L93 Difference]: Finished difference Result 1329 states and 2262 transitions. [2022-12-13 18:24:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:24:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-12-13 18:24:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:03,585 INFO L225 Difference]: With dead ends: 1329 [2022-12-13 18:24:03,585 INFO L226 Difference]: Without dead ends: 821 [2022-12-13 18:24:03,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:24:03,588 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1004 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 5372 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 5654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 5372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:03,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3574 Invalid, 5654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 5372 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 18:24:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-12-13 18:24:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 530. [2022-12-13 18:24:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 420 states have (on average 1.6952380952380952) internal successors, (712), 439 states have internal predecessors, (712), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (85), 82 states have call predecessors, (85), 83 states have call successors, (85) [2022-12-13 18:24:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 885 transitions. [2022-12-13 18:24:03,682 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 885 transitions. Word has length 80 [2022-12-13 18:24:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:03,682 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 885 transitions. [2022-12-13 18:24:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:24:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 885 transitions. [2022-12-13 18:24:03,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 18:24:03,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:03,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:24:03,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:03,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1135044575, now seen corresponding path program 1 times [2022-12-13 18:24:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:03,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983833319] [2022-12-13 18:24:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:03,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:03,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:24:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 18:24:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:24:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:04,074 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 18:24:04,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:04,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983833319] [2022-12-13 18:24:04,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983833319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:04,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:04,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 18:24:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299756678] [2022-12-13 18:24:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:24:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:24:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:24:04,076 INFO L87 Difference]: Start difference. First operand 530 states and 885 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:24:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:16,300 INFO L93 Difference]: Finished difference Result 2470 states and 4345 transitions. [2022-12-13 18:24:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:24:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-12-13 18:24:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:16,312 INFO L225 Difference]: With dead ends: 2470 [2022-12-13 18:24:16,312 INFO L226 Difference]: Without dead ends: 1958 [2022-12-13 18:24:16,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:24:16,317 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 4271 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 7924 mSolverCounterSat, 1770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4349 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 9694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1770 IncrementalHoareTripleChecker+Valid, 7924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:16,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4349 Valid, 4105 Invalid, 9694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1770 Valid, 7924 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-13 18:24:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2022-12-13 18:24:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1395. [2022-12-13 18:24:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1094 states have (on average 1.653564899451554) internal successors, (1809), 1141 states have internal predecessors, (1809), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2022-12-13 18:24:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2325 transitions. [2022-12-13 18:24:16,599 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2325 transitions. Word has length 85 [2022-12-13 18:24:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:16,600 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 2325 transitions. [2022-12-13 18:24:16,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:24:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2325 transitions. [2022-12-13 18:24:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 18:24:16,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:16,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:24:16,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 150471569, now seen corresponding path program 1 times [2022-12-13 18:24:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086590788] [2022-12-13 18:24:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:16,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:24:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:24:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:24:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:24:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,164 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 18:24:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:17,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086590788] [2022-12-13 18:24:17,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086590788] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:17,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:17,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 18:24:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501169008] [2022-12-13 18:24:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:24:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:24:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:24:17,166 INFO L87 Difference]: Start difference. First operand 1395 states and 2325 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-13 18:24:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:27,138 INFO L93 Difference]: Finished difference Result 3583 states and 6129 transitions. [2022-12-13 18:24:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:24:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2022-12-13 18:24:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:27,146 INFO L225 Difference]: With dead ends: 3583 [2022-12-13 18:24:27,147 INFO L226 Difference]: Without dead ends: 2032 [2022-12-13 18:24:27,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:24:27,152 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 4851 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 8723 mSolverCounterSat, 1413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4914 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 10136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1413 IncrementalHoareTripleChecker+Valid, 8723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:27,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4914 Valid, 4514 Invalid, 10136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1413 Valid, 8723 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-12-13 18:24:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2022-12-13 18:24:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1470. [2022-12-13 18:24:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1152 states have (on average 1.6241319444444444) internal successors, (1871), 1201 states have internal predecessors, (1871), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-12-13 18:24:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2420 transitions. [2022-12-13 18:24:27,506 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2420 transitions. Word has length 94 [2022-12-13 18:24:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:27,506 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2420 transitions. [2022-12-13 18:24:27,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-13 18:24:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2420 transitions. [2022-12-13 18:24:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 18:24:27,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:27,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:27,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:24:27,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:27,509 INFO L85 PathProgramCache]: Analyzing trace with hash 202169523, now seen corresponding path program 1 times [2022-12-13 18:24:27,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:27,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571930940] [2022-12-13 18:24:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:27,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:24:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:24:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:24:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:24:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:24:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:24:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:27,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571930940] [2022-12-13 18:24:27,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571930940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:27,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:27,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:24:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602907851] [2022-12-13 18:24:27,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:27,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:24:27,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:27,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:24:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:24:27,825 INFO L87 Difference]: Start difference. First operand 1470 states and 2420 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:32,969 INFO L93 Difference]: Finished difference Result 3462 states and 5831 transitions. [2022-12-13 18:24:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:24:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-12-13 18:24:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:32,977 INFO L225 Difference]: With dead ends: 3462 [2022-12-13 18:24:32,977 INFO L226 Difference]: Without dead ends: 2010 [2022-12-13 18:24:32,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:24:32,982 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 929 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2929 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:32,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1888 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2929 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 18:24:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-12-13 18:24:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1470. [2022-12-13 18:24:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1152 states have (on average 1.6232638888888888) internal successors, (1870), 1201 states have internal predecessors, (1870), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-12-13 18:24:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2419 transitions. [2022-12-13 18:24:33,323 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2419 transitions. Word has length 97 [2022-12-13 18:24:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2419 transitions. [2022-12-13 18:24:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2419 transitions. [2022-12-13 18:24:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 18:24:33,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:33,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:24:33,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash -582363142, now seen corresponding path program 1 times [2022-12-13 18:24:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:33,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652556839] [2022-12-13 18:24:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:24:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:24:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:24:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:24:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:24:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:24:33,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:33,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652556839] [2022-12-13 18:24:33,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652556839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:33,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:33,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:24:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137780192] [2022-12-13 18:24:33,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:33,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:24:33,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:24:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:24:33,746 INFO L87 Difference]: Start difference. First operand 1470 states and 2419 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:24:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:40,383 INFO L93 Difference]: Finished difference Result 3562 states and 6098 transitions. [2022-12-13 18:24:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:24:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-12-13 18:24:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:40,394 INFO L225 Difference]: With dead ends: 3562 [2022-12-13 18:24:40,394 INFO L226 Difference]: Without dead ends: 2150 [2022-12-13 18:24:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:24:40,399 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 2078 mSDsluCounter, 4000 mSDsCounter, 0 mSdLazyCounter, 6317 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 6937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 6317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:40,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4536 Invalid, 6937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [620 Valid, 6317 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 18:24:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-12-13 18:24:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1494. [2022-12-13 18:24:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.6125429553264605) internal successors, (1877), 1221 states have internal predecessors, (1877), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:24:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2462 transitions. [2022-12-13 18:24:40,706 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2462 transitions. Word has length 98 [2022-12-13 18:24:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:40,706 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2462 transitions. [2022-12-13 18:24:40,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:24:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2462 transitions. [2022-12-13 18:24:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 18:24:40,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:40,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:40,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:24:40,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1237331055, now seen corresponding path program 1 times [2022-12-13 18:24:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:40,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828796219] [2022-12-13 18:24:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:24:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:24:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:24:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:24:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:24:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:24:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:40,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828796219] [2022-12-13 18:24:40,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828796219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:40,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:40,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:24:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575827596] [2022-12-13 18:24:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:40,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:24:40,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:24:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:24:40,976 INFO L87 Difference]: Start difference. First operand 1494 states and 2462 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:45,682 INFO L93 Difference]: Finished difference Result 3478 states and 5886 transitions. [2022-12-13 18:24:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:24:45,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-12-13 18:24:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:45,691 INFO L225 Difference]: With dead ends: 3478 [2022-12-13 18:24:45,691 INFO L226 Difference]: Without dead ends: 2042 [2022-12-13 18:24:45,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:24:45,695 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1027 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:45,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1876 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2806 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 18:24:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-12-13 18:24:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1494. [2022-12-13 18:24:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.6082474226804124) internal successors, (1872), 1221 states have internal predecessors, (1872), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:24:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2457 transitions. [2022-12-13 18:24:46,012 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2457 transitions. Word has length 99 [2022-12-13 18:24:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:46,012 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2457 transitions. [2022-12-13 18:24:46,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2457 transitions. [2022-12-13 18:24:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 18:24:46,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:46,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:46,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:24:46,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash 689977238, now seen corresponding path program 1 times [2022-12-13 18:24:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:46,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126169712] [2022-12-13 18:24:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:46,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:24:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:24:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:24:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:24:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:24:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:24:46,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:46,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126169712] [2022-12-13 18:24:46,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126169712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:46,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:46,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:24:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876360838] [2022-12-13 18:24:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:24:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:24:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:24:46,314 INFO L87 Difference]: Start difference. First operand 1494 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:50,677 INFO L93 Difference]: Finished difference Result 3478 states and 5881 transitions. [2022-12-13 18:24:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:24:50,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-12-13 18:24:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:50,687 INFO L225 Difference]: With dead ends: 3478 [2022-12-13 18:24:50,687 INFO L226 Difference]: Without dead ends: 2042 [2022-12-13 18:24:50,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:24:50,693 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1825 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:50,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 1751 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 18:24:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-12-13 18:24:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1494. [2022-12-13 18:24:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.6039518900343643) internal successors, (1867), 1221 states have internal predecessors, (1867), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:24:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2452 transitions. [2022-12-13 18:24:51,058 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2452 transitions. Word has length 100 [2022-12-13 18:24:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:51,058 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2452 transitions. [2022-12-13 18:24:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2452 transitions. [2022-12-13 18:24:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:24:51,061 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:51,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:51,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:24:51,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1769918004, now seen corresponding path program 1 times [2022-12-13 18:24:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:51,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33523836] [2022-12-13 18:24:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:24:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:24:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:24:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:24:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:24:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:24:51,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:51,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33523836] [2022-12-13 18:24:51,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33523836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:51,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:51,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:24:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963374628] [2022-12-13 18:24:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:51,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:24:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:24:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:24:51,356 INFO L87 Difference]: Start difference. First operand 1494 states and 2452 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:55,648 INFO L93 Difference]: Finished difference Result 3478 states and 5876 transitions. [2022-12-13 18:24:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:24:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-12-13 18:24:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:55,656 INFO L225 Difference]: With dead ends: 3478 [2022-12-13 18:24:55,656 INFO L226 Difference]: Without dead ends: 2042 [2022-12-13 18:24:55,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:24:55,660 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1432 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:55,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1810 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 18:24:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-12-13 18:24:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1494. [2022-12-13 18:24:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.5996563573883162) internal successors, (1862), 1221 states have internal predecessors, (1862), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:24:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2447 transitions. [2022-12-13 18:24:56,045 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2447 transitions. Word has length 101 [2022-12-13 18:24:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:56,045 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2447 transitions. [2022-12-13 18:24:56,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:24:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2447 transitions. [2022-12-13 18:24:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:24:56,047 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:56,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:56,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:24:56,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1707733771, now seen corresponding path program 1 times [2022-12-13 18:24:56,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:56,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357376119] [2022-12-13 18:24:56,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:56,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:24:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:24:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:24:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:24:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:24:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:24:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:24:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:24:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:24:56,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:56,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357376119] [2022-12-13 18:24:56,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357376119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:56,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:56,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:24:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937305887] [2022-12-13 18:24:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:24:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:24:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:24:56,336 INFO L87 Difference]: Start difference. First operand 1494 states and 2447 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:01,821 INFO L93 Difference]: Finished difference Result 3501 states and 5905 transitions. [2022-12-13 18:25:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:25:01,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2022-12-13 18:25:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:01,829 INFO L225 Difference]: With dead ends: 3501 [2022-12-13 18:25:01,830 INFO L226 Difference]: Without dead ends: 2071 [2022-12-13 18:25:01,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:25:01,834 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1826 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 4760 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 4760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:01,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 3154 Invalid, 5301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [541 Valid, 4760 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 18:25:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-12-13 18:25:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1496. [2022-12-13 18:25:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1166 states have (on average 1.5986277873070327) internal successors, (1864), 1223 states have internal predecessors, (1864), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2449 transitions. [2022-12-13 18:25:02,183 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2449 transitions. Word has length 101 [2022-12-13 18:25:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:02,184 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 2449 transitions. [2022-12-13 18:25:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2449 transitions. [2022-12-13 18:25:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:25:02,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:02,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:25:02,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1500797937, now seen corresponding path program 1 times [2022-12-13 18:25:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:02,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144641250] [2022-12-13 18:25:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:02,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:02,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144641250] [2022-12-13 18:25:02,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144641250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:02,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:02,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:25:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027886443] [2022-12-13 18:25:02,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:02,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:25:02,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:02,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:25:02,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:25:02,418 INFO L87 Difference]: Start difference. First operand 1496 states and 2449 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:25:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:06,996 INFO L93 Difference]: Finished difference Result 3484 states and 5877 transitions. [2022-12-13 18:25:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:25:06,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-12-13 18:25:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:07,006 INFO L225 Difference]: With dead ends: 3484 [2022-12-13 18:25:07,006 INFO L226 Difference]: Without dead ends: 2046 [2022-12-13 18:25:07,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:25:07,010 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1418 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:07,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1801 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 18:25:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2022-12-13 18:25:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1496. [2022-12-13 18:25:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1166 states have (on average 1.5943396226415094) internal successors, (1859), 1223 states have internal predecessors, (1859), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2444 transitions. [2022-12-13 18:25:07,384 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2444 transitions. Word has length 102 [2022-12-13 18:25:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:07,384 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 2444 transitions. [2022-12-13 18:25:07,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:25:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2444 transitions. [2022-12-13 18:25:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:25:07,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:07,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:25:07,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1754249388, now seen corresponding path program 1 times [2022-12-13 18:25:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:07,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211547296] [2022-12-13 18:25:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:07,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211547296] [2022-12-13 18:25:07,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211547296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:07,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:07,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:25:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43206943] [2022-12-13 18:25:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:25:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:25:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:25:07,714 INFO L87 Difference]: Start difference. First operand 1496 states and 2444 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:13,878 INFO L93 Difference]: Finished difference Result 3505 states and 5902 transitions. [2022-12-13 18:25:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:25:13,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-12-13 18:25:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:13,887 INFO L225 Difference]: With dead ends: 3505 [2022-12-13 18:25:13,887 INFO L226 Difference]: Without dead ends: 2075 [2022-12-13 18:25:13,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:25:13,891 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1000 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 4957 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 5212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 4957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:13,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 3314 Invalid, 5212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 4957 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 18:25:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-12-13 18:25:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1499. [2022-12-13 18:25:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1169 states have (on average 1.592814371257485) internal successors, (1862), 1226 states have internal predecessors, (1862), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2447 transitions. [2022-12-13 18:25:14,305 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2447 transitions. Word has length 102 [2022-12-13 18:25:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:14,305 INFO L495 AbstractCegarLoop]: Abstraction has 1499 states and 2447 transitions. [2022-12-13 18:25:14,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2447 transitions. [2022-12-13 18:25:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:25:14,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:14,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:14,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:25:14,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2031834119, now seen corresponding path program 1 times [2022-12-13 18:25:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:14,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326042036] [2022-12-13 18:25:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:25:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:14,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:14,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326042036] [2022-12-13 18:25:14,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326042036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:14,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:14,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:25:14,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973002930] [2022-12-13 18:25:14,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:14,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:25:14,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:25:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:25:14,597 INFO L87 Difference]: Start difference. First operand 1499 states and 2447 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:25:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:18,910 INFO L93 Difference]: Finished difference Result 3533 states and 5931 transitions. [2022-12-13 18:25:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:25:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2022-12-13 18:25:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:18,919 INFO L225 Difference]: With dead ends: 3533 [2022-12-13 18:25:18,919 INFO L226 Difference]: Without dead ends: 2052 [2022-12-13 18:25:18,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:25:18,922 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1727 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:18,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 1738 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 18:25:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2022-12-13 18:25:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1499. [2022-12-13 18:25:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1169 states have (on average 1.5919589392643285) internal successors, (1861), 1226 states have internal predecessors, (1861), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2446 transitions. [2022-12-13 18:25:19,300 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2446 transitions. Word has length 103 [2022-12-13 18:25:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:19,301 INFO L495 AbstractCegarLoop]: Abstraction has 1499 states and 2446 transitions. [2022-12-13 18:25:19,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:25:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2446 transitions. [2022-12-13 18:25:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:25:19,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:19,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:19,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:25:19,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash 863637864, now seen corresponding path program 1 times [2022-12-13 18:25:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:19,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320891211] [2022-12-13 18:25:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:25:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:19,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320891211] [2022-12-13 18:25:19,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320891211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:19,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:19,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:25:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226874709] [2022-12-13 18:25:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:25:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:25:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:25:19,638 INFO L87 Difference]: Start difference. First operand 1499 states and 2446 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:25,548 INFO L93 Difference]: Finished difference Result 3493 states and 5881 transitions. [2022-12-13 18:25:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:25:25,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 18:25:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:25,556 INFO L225 Difference]: With dead ends: 3493 [2022-12-13 18:25:25,556 INFO L226 Difference]: Without dead ends: 2042 [2022-12-13 18:25:25,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:25:25,560 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 997 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 4960 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 5207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:25,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3307 Invalid, 5207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [247 Valid, 4960 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 18:25:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-12-13 18:25:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1491. [2022-12-13 18:25:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1161 states have (on average 1.5934539190353143) internal successors, (1850), 1218 states have internal predecessors, (1850), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2435 transitions. [2022-12-13 18:25:25,952 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2435 transitions. Word has length 103 [2022-12-13 18:25:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:25,952 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 2435 transitions. [2022-12-13 18:25:25,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2435 transitions. [2022-12-13 18:25:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:25:25,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:25,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:25,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:25:25,955 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:25,955 INFO L85 PathProgramCache]: Analyzing trace with hash -530005529, now seen corresponding path program 1 times [2022-12-13 18:25:25,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:25,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055436427] [2022-12-13 18:25:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:25,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:25:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:26,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055436427] [2022-12-13 18:25:26,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055436427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:26,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:26,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:25:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925921445] [2022-12-13 18:25:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:25:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:26,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:25:26,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:25:26,235 INFO L87 Difference]: Start difference. First operand 1491 states and 2435 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:31,611 INFO L93 Difference]: Finished difference Result 3493 states and 5877 transitions. [2022-12-13 18:25:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:25:31,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 18:25:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:31,619 INFO L225 Difference]: With dead ends: 3493 [2022-12-13 18:25:31,619 INFO L226 Difference]: Without dead ends: 2063 [2022-12-13 18:25:31,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:25:31,622 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1775 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 4619 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 5150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 4619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:31,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 3170 Invalid, 5150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [531 Valid, 4619 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 18:25:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-12-13 18:25:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1495. [2022-12-13 18:25:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1165 states have (on average 1.5914163090128755) internal successors, (1854), 1222 states have internal predecessors, (1854), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2439 transitions. [2022-12-13 18:25:32,024 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2439 transitions. Word has length 103 [2022-12-13 18:25:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:32,024 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2439 transitions. [2022-12-13 18:25:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:32,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2439 transitions. [2022-12-13 18:25:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:25:32,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:32,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:32,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:25:32,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2020186962, now seen corresponding path program 1 times [2022-12-13 18:25:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:32,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720881337] [2022-12-13 18:25:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:32,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 18:25:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:32,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:32,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720881337] [2022-12-13 18:25:32,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720881337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:32,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:32,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:25:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339485121] [2022-12-13 18:25:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:25:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:25:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:25:32,303 INFO L87 Difference]: Start difference. First operand 1495 states and 2439 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:37,610 INFO L93 Difference]: Finished difference Result 3501 states and 5883 transitions. [2022-12-13 18:25:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:25:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-12-13 18:25:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:37,618 INFO L225 Difference]: With dead ends: 3501 [2022-12-13 18:25:37,618 INFO L226 Difference]: Without dead ends: 2071 [2022-12-13 18:25:37,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:25:37,621 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1766 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 4631 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 4631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 3170 Invalid, 5161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [530 Valid, 4631 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 18:25:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-12-13 18:25:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1500. [2022-12-13 18:25:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1170 states have (on average 1.5888888888888888) internal successors, (1859), 1227 states have internal predecessors, (1859), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 18:25:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2444 transitions. [2022-12-13 18:25:38,044 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2444 transitions. Word has length 104 [2022-12-13 18:25:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:38,044 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2444 transitions. [2022-12-13 18:25:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:25:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2444 transitions. [2022-12-13 18:25:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 18:25:38,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:38,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:38,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:25:38,046 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:38,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1255357678, now seen corresponding path program 1 times [2022-12-13 18:25:38,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:38,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367840307] [2022-12-13 18:25:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:25:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:25:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:25:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:25:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:25:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:25:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:25:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:25:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:25:38,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:38,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367840307] [2022-12-13 18:25:38,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367840307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:38,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:25:38,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 18:25:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027446920] [2022-12-13 18:25:38,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:38,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:25:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:25:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:25:38,472 INFO L87 Difference]: Start difference. First operand 1500 states and 2444 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 18:26:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:26:01,625 INFO L93 Difference]: Finished difference Result 5939 states and 10347 transitions. [2022-12-13 18:26:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 18:26:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2022-12-13 18:26:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:26:01,642 INFO L225 Difference]: With dead ends: 5939 [2022-12-13 18:26:01,642 INFO L226 Difference]: Without dead ends: 4517 [2022-12-13 18:26:01,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2022-12-13 18:26:01,648 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 10018 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 16732 mSolverCounterSat, 4278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10093 SdHoareTripleChecker+Valid, 7275 SdHoareTripleChecker+Invalid, 21010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4278 IncrementalHoareTripleChecker+Valid, 16732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:26:01,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10093 Valid, 7275 Invalid, 21010 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4278 Valid, 16732 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2022-12-13 18:26:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2022-12-13 18:26:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 3116. [2022-12-13 18:26:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 2434 states have (on average 1.576417419884963) internal successors, (3837), 2552 states have internal predecessors, (3837), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-12-13 18:26:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 5060 transitions. [2022-12-13 18:26:02,717 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 5060 transitions. Word has length 105 [2022-12-13 18:26:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:26:02,717 INFO L495 AbstractCegarLoop]: Abstraction has 3116 states and 5060 transitions. [2022-12-13 18:26:02,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 18:26:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 5060 transitions. [2022-12-13 18:26:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 18:26:02,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:26:02,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:26:02,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:26:02,719 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:26:02,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:26:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1449647346, now seen corresponding path program 1 times [2022-12-13 18:26:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:26:02,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411293683] [2022-12-13 18:26:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:26:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:26:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:26:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:02,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:26:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:26:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:26:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:26:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:26:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:26:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:26:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411293683] [2022-12-13 18:26:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411293683] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:26:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105355301] [2022-12-13 18:26:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:03,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:26:03,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:26:03,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:26:03,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:26:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:03,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:26:03,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:26:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:26:03,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:26:03,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105355301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:26:03,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:26:03,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-12-13 18:26:03,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918152286] [2022-12-13 18:26:03,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:26:03,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:26:03,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:26:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:26:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:26:03,462 INFO L87 Difference]: Start difference. First operand 3116 states and 5060 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-13 18:26:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:26:04,788 INFO L93 Difference]: Finished difference Result 3232 states and 5247 transitions. [2022-12-13 18:26:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:26:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2022-12-13 18:26:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:26:04,803 INFO L225 Difference]: With dead ends: 3232 [2022-12-13 18:26:04,803 INFO L226 Difference]: Without dead ends: 3217 [2022-12-13 18:26:04,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:26:04,805 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 773 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:26:04,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 2131 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:26:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2022-12-13 18:26:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3125. [2022-12-13 18:26:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2443 states have (on average 1.5742939009414654) internal successors, (3846), 2561 states have internal predecessors, (3846), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-12-13 18:26:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5069 transitions. [2022-12-13 18:26:05,765 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5069 transitions. Word has length 106 [2022-12-13 18:26:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:26:05,766 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 5069 transitions. [2022-12-13 18:26:05,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-13 18:26:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5069 transitions. [2022-12-13 18:26:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 18:26:05,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:26:05,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:26:05,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:26:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 18:26:05,976 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:26:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:26:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1690886665, now seen corresponding path program 1 times [2022-12-13 18:26:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:26:05,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027098370] [2022-12-13 18:26:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:05,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:26:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:26:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:26:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:26:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:26:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:26:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:26:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:26:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:26:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:26:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:26:06,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027098370] [2022-12-13 18:26:06,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027098370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:26:06,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:26:06,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:26:06,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923547756] [2022-12-13 18:26:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:26:06,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:26:06,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:26:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:26:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:26:06,330 INFO L87 Difference]: Start difference. First operand 3125 states and 5069 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:26:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:26:16,418 INFO L93 Difference]: Finished difference Result 4245 states and 7195 transitions. [2022-12-13 18:26:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 18:26:16,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-12-13 18:26:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:26:16,433 INFO L225 Difference]: With dead ends: 4245 [2022-12-13 18:26:16,433 INFO L226 Difference]: Without dead ends: 4230 [2022-12-13 18:26:16,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:26:16,436 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3254 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 1127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 6191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1127 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:26:16,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 2629 Invalid, 6191 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1127 Valid, 5064 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-13 18:26:16,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2022-12-13 18:26:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 3125. [2022-12-13 18:26:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2443 states have (on average 1.5714285714285714) internal successors, (3839), 2561 states have internal predecessors, (3839), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-12-13 18:26:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5062 transitions. [2022-12-13 18:26:17,511 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5062 transitions. Word has length 112 [2022-12-13 18:26:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:26:17,511 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 5062 transitions. [2022-12-13 18:26:17,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:26:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5062 transitions. [2022-12-13 18:26:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 18:26:17,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:26:17,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:26:17,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:26:17,513 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:26:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:26:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2057524241, now seen corresponding path program 1 times [2022-12-13 18:26:17,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:26:17,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881291936] [2022-12-13 18:26:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:26:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:26:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:26:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:26:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:26:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:26:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:26:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:26:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:26:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:26:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:26:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:26:17,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881291936] [2022-12-13 18:26:17,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881291936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:26:17,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:26:17,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:26:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131677559] [2022-12-13 18:26:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:26:17,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:26:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:26:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:26:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:26:17,915 INFO L87 Difference]: Start difference. First operand 3125 states and 5062 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:26:32,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:26:32,796 INFO L93 Difference]: Finished difference Result 8095 states and 13728 transitions. [2022-12-13 18:26:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 18:26:32,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-12-13 18:26:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:26:32,814 INFO L225 Difference]: With dead ends: 8095 [2022-12-13 18:26:32,814 INFO L226 Difference]: Without dead ends: 5056 [2022-12-13 18:26:32,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 18:26:32,823 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 6826 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 8587 mSolverCounterSat, 3329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6827 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 11916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3329 IncrementalHoareTripleChecker+Valid, 8587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:26:32,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6827 Valid, 2535 Invalid, 11916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3329 Valid, 8587 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-12-13 18:26:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-12-13 18:26:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 3141. [2022-12-13 18:26:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 2455 states have (on average 1.564969450101833) internal successors, (3842), 2573 states have internal predecessors, (3842), 524 states have call successors, (524), 124 states have call predecessors, (524), 161 states have return successors, (740), 515 states have call predecessors, (740), 519 states have call successors, (740) [2022-12-13 18:26:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 5106 transitions. [2022-12-13 18:26:33,883 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 5106 transitions. Word has length 123 [2022-12-13 18:26:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:26:33,883 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 5106 transitions. [2022-12-13 18:26:33,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:26:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 5106 transitions. [2022-12-13 18:26:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 18:26:33,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:26:33,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:26:33,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:26:33,885 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:26:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:26:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1179129061, now seen corresponding path program 1 times [2022-12-13 18:26:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:26:33,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010242495] [2022-12-13 18:26:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:26:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:26:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:26:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:26:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:26:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:26:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:26:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:26:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:26:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:26:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:26:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:26:34,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:26:34,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010242495] [2022-12-13 18:26:34,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010242495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:26:34,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:26:34,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:26:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552482187] [2022-12-13 18:26:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:26:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:26:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:26:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:26:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:26:34,215 INFO L87 Difference]: Start difference. First operand 3141 states and 5106 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:27:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:07,101 INFO L93 Difference]: Finished difference Result 15676 states and 28071 transitions. [2022-12-13 18:27:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 18:27:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-12-13 18:27:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:07,163 INFO L225 Difference]: With dead ends: 15676 [2022-12-13 18:27:07,164 INFO L226 Difference]: Without dead ends: 12621 [2022-12-13 18:27:07,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 18:27:07,181 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 7823 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 10595 mSolverCounterSat, 4926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7890 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 15521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4926 IncrementalHoareTripleChecker+Valid, 10595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:07,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7890 Valid, 3147 Invalid, 15521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4926 Valid, 10595 Invalid, 0 Unknown, 0 Unchecked, 21.9s Time] [2022-12-13 18:27:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2022-12-13 18:27:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 8202. [2022-12-13 18:27:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 6105 states have (on average 1.549058149058149) internal successors, (9457), 6524 states have internal predecessors, (9457), 1747 states have call successors, (1747), 242 states have call predecessors, (1747), 349 states have return successors, (2690), 1723 states have call predecessors, (2690), 1742 states have call successors, (2690) [2022-12-13 18:27:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 13894 transitions. [2022-12-13 18:27:10,849 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 13894 transitions. Word has length 124 [2022-12-13 18:27:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:10,850 INFO L495 AbstractCegarLoop]: Abstraction has 8202 states and 13894 transitions. [2022-12-13 18:27:10,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:27:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 13894 transitions. [2022-12-13 18:27:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 18:27:10,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:10,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:27:10,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:27:10,853 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash 701479761, now seen corresponding path program 1 times [2022-12-13 18:27:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:10,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499648796] [2022-12-13 18:27:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:27:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:27:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:27:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:27:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:27:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:27:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:27:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:27:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:27:11,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499648796] [2022-12-13 18:27:11,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499648796] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:27:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319317311] [2022-12-13 18:27:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:11,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:11,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:27:11,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:27:11,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:27:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:11,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:27:11,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:27:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:27:11,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:27:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:27:11,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319317311] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:27:11,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:27:11,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-12-13 18:27:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934846446] [2022-12-13 18:27:11,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:27:11,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:27:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:27:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:27:11,725 INFO L87 Difference]: Start difference. First operand 8202 states and 13894 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 18:27:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:31,890 INFO L93 Difference]: Finished difference Result 21249 states and 37861 transitions. [2022-12-13 18:27:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:27:31,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-12-13 18:27:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:31,958 INFO L225 Difference]: With dead ends: 21249 [2022-12-13 18:27:31,958 INFO L226 Difference]: Without dead ends: 13129 [2022-12-13 18:27:31,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:27:31,988 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 4470 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 6855 mSolverCounterSat, 1638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4531 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 8493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1638 IncrementalHoareTripleChecker+Valid, 6855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:31,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4531 Valid, 3686 Invalid, 8493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1638 Valid, 6855 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-12-13 18:27:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13129 states. [2022-12-13 18:27:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13129 to 9164. [2022-12-13 18:27:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 6855 states have (on average 1.5393143690736688) internal successors, (10552), 7307 states have internal predecessors, (10552), 1899 states have call successors, (1899), 282 states have call predecessors, (1899), 409 states have return successors, (2957), 1865 states have call predecessors, (2957), 1894 states have call successors, (2957) [2022-12-13 18:27:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 15408 transitions. [2022-12-13 18:27:36,243 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 15408 transitions. Word has length 132 [2022-12-13 18:27:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:36,243 INFO L495 AbstractCegarLoop]: Abstraction has 9164 states and 15408 transitions. [2022-12-13 18:27:36,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 18:27:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 15408 transitions. [2022-12-13 18:27:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 18:27:36,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:36,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:27:36,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:27:36,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:36,448 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash 207187003, now seen corresponding path program 1 times [2022-12-13 18:27:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:36,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308941659] [2022-12-13 18:27:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:27:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:27:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:27:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:27:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:27:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 18:27:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 18:27:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:27:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 18:27:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:27:36,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308941659] [2022-12-13 18:27:36,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308941659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:27:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900338350] [2022-12-13 18:27:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:36,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:27:36,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:27:36,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:27:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:37,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:27:37,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:27:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:27:37,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:27:37,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900338350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:37,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:27:37,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-12-13 18:27:37,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103476885] [2022-12-13 18:27:37,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:37,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:37,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:37,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:27:37,037 INFO L87 Difference]: Start difference. First operand 9164 states and 15408 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 18:27:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:45,244 INFO L93 Difference]: Finished difference Result 25410 states and 43228 transitions. [2022-12-13 18:27:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2022-12-13 18:27:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:45,301 INFO L225 Difference]: With dead ends: 25410 [2022-12-13 18:27:45,301 INFO L226 Difference]: Without dead ends: 16304 [2022-12-13 18:27:45,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:27:45,330 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 943 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:45,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 3320 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:27:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16304 states. [2022-12-13 18:27:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16304 to 15519. [2022-12-13 18:27:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15519 states, 11450 states have (on average 1.5572052401746725) internal successors, (17830), 12276 states have internal predecessors, (17830), 3415 states have call successors, (3415), 482 states have call predecessors, (3415), 653 states have return successors, (4769), 3385 states have call predecessors, (4769), 3410 states have call successors, (4769) [2022-12-13 18:27:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15519 states to 15519 states and 26014 transitions. [2022-12-13 18:27:52,417 INFO L78 Accepts]: Start accepts. Automaton has 15519 states and 26014 transitions. Word has length 136 [2022-12-13 18:27:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:52,418 INFO L495 AbstractCegarLoop]: Abstraction has 15519 states and 26014 transitions. [2022-12-13 18:27:52,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 18:27:52,418 INFO L276 IsEmpty]: Start isEmpty. Operand 15519 states and 26014 transitions. [2022-12-13 18:27:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 18:27:52,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:52,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:27:52,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:27:52,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c875a-47ba-43ca-9a50-43403e97d29c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 18:27:52,623 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash -491403103, now seen corresponding path program 1 times [2022-12-13 18:27:52,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:52,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852848339] [2022-12-13 18:27:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:27:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:27:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:27:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:27:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:27:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:27:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:27:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:27:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 18:27:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:27:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 18:27:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:27:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:53,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852848339] [2022-12-13 18:27:53,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852848339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:53,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:53,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:27:53,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042571280] [2022-12-13 18:27:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:27:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:27:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:27:53,122 INFO L87 Difference]: Start difference. First operand 15519 states and 26014 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 18:28:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:16,317 INFO L93 Difference]: Finished difference Result 38041 states and 66689 transitions. [2022-12-13 18:28:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:28:16,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2022-12-13 18:28:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:16,437 INFO L225 Difference]: With dead ends: 38041 [2022-12-13 18:28:16,438 INFO L226 Difference]: Without dead ends: 22620 [2022-12-13 18:28:16,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:28:16,498 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 2678 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 6210 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 7087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 6210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:16,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2738 Valid, 3648 Invalid, 7087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [877 Valid, 6210 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-13 18:28:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2022-12-13 18:28:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 16030. [2022-12-13 18:28:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16030 states, 11941 states have (on average 1.549200234486224) internal successors, (18499), 12732 states have internal predecessors, (18499), 3383 states have call successors, (3383), 544 states have call predecessors, (3383), 705 states have return successors, (4673), 3353 states have call predecessors, (4673), 3378 states have call successors, (4673) [2022-12-13 18:28:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16030 states to 16030 states and 26555 transitions. [2022-12-13 18:28:23,725 INFO L78 Accepts]: Start accepts. Automaton has 16030 states and 26555 transitions. Word has length 135 [2022-12-13 18:28:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:23,726 INFO L495 AbstractCegarLoop]: Abstraction has 16030 states and 26555 transitions. [2022-12-13 18:28:23,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 18:28:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states and 26555 transitions. [2022-12-13 18:28:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 18:28:23,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:23,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 18:28:23,730 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash 468694886, now seen corresponding path program 1 times [2022-12-13 18:28:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:23,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115810614] [2022-12-13 18:28:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:28:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:28:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:28:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:28:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:28:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:28:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:28:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:28:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:28:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:28:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 18:28:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:28:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:28:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:28:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:28:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:28:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:24,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115810614] [2022-12-13 18:28:24,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115810614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:24,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:24,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:28:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918841383] [2022-12-13 18:28:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:24,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:28:24,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:24,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:28:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:28:24,188 INFO L87 Difference]: Start difference. First operand 16030 states and 26555 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:29:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:06,106 INFO L93 Difference]: Finished difference Result 69016 states and 129549 transitions. [2022-12-13 18:29:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:29:06,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-12-13 18:29:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:06,512 INFO L225 Difference]: With dead ends: 69016 [2022-12-13 18:29:06,513 INFO L226 Difference]: Without dead ends: 53072 [2022-12-13 18:29:06,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:29:06,633 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 4348 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 3171 mSolverCounterSat, 1586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 4757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1586 IncrementalHoareTripleChecker+Valid, 3171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:06,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 2400 Invalid, 4757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1586 Valid, 3171 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-12-13 18:29:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53072 states. [2022-12-13 18:29:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53072 to 35041. [2022-12-13 18:29:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35041 states, 25658 states have (on average 1.5429495673863902) internal successors, (39589), 27495 states have internal predecessors, (39589), 7870 states have call successors, (7870), 1083 states have call predecessors, (7870), 1512 states have return successors, (12580), 7852 states have call predecessors, (12580), 7865 states have call successors, (12580) [2022-12-13 18:29:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35041 states to 35041 states and 60039 transitions. [2022-12-13 18:29:24,616 INFO L78 Accepts]: Start accepts. Automaton has 35041 states and 60039 transitions. Word has length 141 [2022-12-13 18:29:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:24,617 INFO L495 AbstractCegarLoop]: Abstraction has 35041 states and 60039 transitions. [2022-12-13 18:29:24,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:29:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 35041 states and 60039 transitions. [2022-12-13 18:29:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 18:29:24,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:24,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:24,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:29:24,625 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1610097126, now seen corresponding path program 1 times [2022-12-13 18:29:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:24,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610156226] [2022-12-13 18:29:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:24,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:29:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:29:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:29:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:29:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:29:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:29:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 18:29:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 18:29:25,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:25,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610156226] [2022-12-13 18:29:25,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610156226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:25,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:25,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:29:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650252372] [2022-12-13 18:29:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:25,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:29:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:29:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:29:25,022 INFO L87 Difference]: Start difference. First operand 35041 states and 60039 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 18:30:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:57,904 INFO L93 Difference]: Finished difference Result 155907 states and 326959 transitions. [2022-12-13 18:30:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:30:57,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 140 [2022-12-13 18:30:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:59,269 INFO L225 Difference]: With dead ends: 155907 [2022-12-13 18:30:59,269 INFO L226 Difference]: Without dead ends: 120944 [2022-12-13 18:30:59,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:30:59,740 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 4429 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 1630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 4646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1630 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:59,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 2245 Invalid, 4646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1630 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-12-13 18:30:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120944 states. [2022-12-13 18:31:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120944 to 78552. [2022-12-13 18:31:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78552 states, 56417 states have (on average 1.5336689295779642) internal successors, (86525), 60783 states have internal predecessors, (86525), 18845 states have call successors, (18845), 2153 states have call predecessors, (18845), 3289 states have return successors, (36253), 18927 states have call predecessors, (36253), 18840 states have call successors, (36253) [2022-12-13 18:31:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78552 states to 78552 states and 141623 transitions. [2022-12-13 18:31:46,388 INFO L78 Accepts]: Start accepts. Automaton has 78552 states and 141623 transitions. Word has length 140 [2022-12-13 18:31:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 78552 states and 141623 transitions. [2022-12-13 18:31:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 18:31:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 78552 states and 141623 transitions. [2022-12-13 18:31:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 18:31:46,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:46,399 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:46,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 18:31:46,400 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:46,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1627013022, now seen corresponding path program 1 times [2022-12-13 18:31:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:46,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105278165] [2022-12-13 18:31:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:46,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:31:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:31:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:31:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:31:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:31:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:31:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:31:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:31:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:31:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:31:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:31:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:31:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:31:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 18:31:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 18:31:46,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:46,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105278165] [2022-12-13 18:31:46,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105278165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:46,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:46,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:31:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574139255] [2022-12-13 18:31:46,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:46,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:31:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:31:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:31:46,762 INFO L87 Difference]: Start difference. First operand 78552 states and 141623 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 18:35:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:45,721 INFO L93 Difference]: Finished difference Result 372646 states and 888556 transitions. [2022-12-13 18:35:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:35:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 141 [2022-12-13 18:35:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:50,883 INFO L225 Difference]: With dead ends: 372646 [2022-12-13 18:35:50,883 INFO L226 Difference]: Without dead ends: 294180 [2022-12-13 18:35:52,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:35:52,130 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 5737 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 2058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5810 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 4845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2058 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:52,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5810 Valid, 1947 Invalid, 4845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2058 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-12-13 18:35:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294180 states.