./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS --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 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a --- 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-4e7fbc6 [2022-11-23 02:53:29,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:53:29,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:53:29,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:53:29,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:53:29,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:53:29,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:53:29,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:53:29,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:53:29,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:53:29,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:53:29,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:53:29,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:53:29,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:53:29,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:53:29,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:53:29,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:53:29,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:53:29,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:53:29,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:53:29,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:53:29,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:53:29,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:53:29,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:53:29,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:53:29,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:53:29,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:53:29,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:53:29,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:53:30,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:53:30,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:53:30,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:53:30,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:53:30,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:53:30,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:53:30,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:53:30,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:53:30,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:53:30,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:53:30,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:53:30,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:53:30,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:53:30,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:53:30,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:53:30,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:53:30,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:53:30,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:53:30,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:53:30,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:53:30,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:53:30,055 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:53:30,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:53:30,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:53:30,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:53:30,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:53:30,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:53:30,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:53:30,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:53:30,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:53:30,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:53:30,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:53:30,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:53:30,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:53:30,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:53:30,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:53:30,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:53:30,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:53:30,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:53:30,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:53:30,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:53:30,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:53:30,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:53:30,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:53:30,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:53:30,061 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:53:30,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:53:30,061 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_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a [2022-11-23 02:53:30,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:53:30,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:53:30,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:53:30,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:53:30,432 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:53:30,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2022-11-23 02:53:33,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:53:34,023 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:53:34,024 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2022-11-23 02:53:34,057 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/data/c1521f286/ef932cb6396c47b1b359f91a9ad6ca35/FLAG68580b9b8 [2022-11-23 02:53:34,082 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/data/c1521f286/ef932cb6396c47b1b359f91a9ad6ca35 [2022-11-23 02:53:34,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:53:34,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:53:34,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:53:34,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:53:34,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:53:34,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:34,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29072b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34, skipping insertion in model container [2022-11-23 02:53:34,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:34,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:53:34,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:53:34,638 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_5e30282e-04d9-494b-abf0-e00e8ce78e23/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2022-11-23 02:53:34,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:53:34,809 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:53:34,875 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_5e30282e-04d9-494b-abf0-e00e8ce78e23/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2022-11-23 02:53:34,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:53:34,966 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:53:34,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34 WrapperNode [2022-11-23 02:53:34,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:53:34,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:53:34,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:53:34,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:53:34,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,106 INFO L138 Inliner]: procedures = 97, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1178 [2022-11-23 02:53:35,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:53:35,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:53:35,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:53:35,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:53:35,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:53:35,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:53:35,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:53:35,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:53:35,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2022-11-23 02:53:35,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:53:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:53:35,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:53:35,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:53:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-23 02:53:35,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-23 02:53:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-23 02:53:35,283 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-23 02:53:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-23 02:53:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-23 02:53:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 02:53:35,286 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 02:53:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-23 02:53:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-23 02:53:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-23 02:53:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-23 02:53:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-23 02:53:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-23 02:53:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-23 02:53:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-23 02:53:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-23 02:53:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-23 02:53:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:53:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-23 02:53:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-23 02:53:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-23 02:53:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-23 02:53:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-23 02:53:35,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-23 02:53:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 02:53:35,290 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 02:53:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-23 02:53:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-23 02:53:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 02:53:35,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 02:53:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-23 02:53:35,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-23 02:53:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-23 02:53:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-23 02:53:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-23 02:53:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-23 02:53:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-23 02:53:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-23 02:53:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-23 02:53:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-23 02:53:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-23 02:53:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-23 02:53:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-23 02:53:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-23 02:53:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:53:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-23 02:53:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-23 02:53:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:53:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:53:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-23 02:53:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-23 02:53:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-23 02:53:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-23 02:53:35,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:53:35,652 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:53:37,097 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:53:37,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:53:37,111 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:53:37,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:53:37 BoogieIcfgContainer [2022-11-23 02:53:37,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:53:37,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:53:37,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:53:37,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:53:37,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:53:34" (1/3) ... [2022-11-23 02:53:37,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3004ab40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:53:37, skipping insertion in model container [2022-11-23 02:53:37,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (2/3) ... [2022-11-23 02:53:37,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3004ab40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:53:37, skipping insertion in model container [2022-11-23 02:53:37,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:53:37" (3/3) ... [2022-11-23 02:53:37,124 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2022-11-23 02:53:37,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:53:37,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:53:37,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:53:37,222 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;@1488ab88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:53:37,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:53:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 475 states have internal predecessors, (763), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-23 02:53:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 02:53:37,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:37,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:37,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:53:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1274281264, now seen corresponding path program 1 times [2022-11-23 02:53:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:53:37,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946338856] [2022-11-23 02:53:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:53:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:53:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:53:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:53:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:53:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:38,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:53:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946338856] [2022-11-23 02:53:38,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946338856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:38,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:38,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:53:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042758661] [2022-11-23 02:53:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:53:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:53:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:53:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:53:38,747 INFO L87 Difference]: Start difference. First operand has 578 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 475 states have internal predecessors, (763), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:53:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:46,329 INFO L93 Difference]: Finished difference Result 1299 states and 2191 transitions. [2022-11-23 02:53:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:53:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-11-23 02:53:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:46,378 INFO L225 Difference]: With dead ends: 1299 [2022-11-23 02:53:46,380 INFO L226 Difference]: Without dead ends: 733 [2022-11-23 02:53:46,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:53:46,404 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1163 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:46,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1224 Invalid, 2973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [279 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 02:53:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-23 02:53:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-23 02:53:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6838565022421526) internal successors, (751), 467 states have internal predecessors, (751), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:53:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 944 transitions. [2022-11-23 02:53:46,695 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 944 transitions. Word has length 60 [2022-11-23 02:53:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:46,695 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 944 transitions. [2022-11-23 02:53:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:53:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 944 transitions. [2022-11-23 02:53:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 02:53:46,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:46,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:46,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:53:46,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:53:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash -577179706, now seen corresponding path program 1 times [2022-11-23 02:53:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:53:46,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453821822] [2022-11-23 02:53:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:53:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:46,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:53:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:53:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:53:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:53:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:47,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:53:47,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453821822] [2022-11-23 02:53:47,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453821822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:47,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:47,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:53:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039970891] [2022-11-23 02:53:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:53:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:53:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:53:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:53:47,426 INFO L87 Difference]: Start difference. First operand 570 states and 944 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:53:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:54,150 INFO L93 Difference]: Finished difference Result 1285 states and 2157 transitions. [2022-11-23 02:53:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:53:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-11-23 02:53:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:54,161 INFO L225 Difference]: With dead ends: 1285 [2022-11-23 02:53:54,162 INFO L226 Difference]: Without dead ends: 733 [2022-11-23 02:53:54,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:53:54,167 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1155 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:54,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1211 Invalid, 2971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 02:53:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-23 02:53:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-23 02:53:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 467 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:53:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 943 transitions. [2022-11-23 02:53:54,335 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 943 transitions. Word has length 63 [2022-11-23 02:53:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:54,336 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 943 transitions. [2022-11-23 02:53:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:53:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 943 transitions. [2022-11-23 02:53:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 02:53:54,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:54,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:54,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:53:54,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:53:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash 766305152, now seen corresponding path program 1 times [2022-11-23 02:53:54,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:53:54,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348656302] [2022-11-23 02:53:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:54,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:53:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:53:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:53:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 02:53:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:53:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:53:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:53:54,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348656302] [2022-11-23 02:53:54,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348656302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:54,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:54,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:53:54,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054538880] [2022-11-23 02:53:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:54,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:53:54,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:53:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:53:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:53:54,862 INFO L87 Difference]: Start difference. First operand 570 states and 943 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:01,962 INFO L93 Difference]: Finished difference Result 1285 states and 2156 transitions. [2022-11-23 02:54:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:54:01,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-11-23 02:54:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:01,971 INFO L225 Difference]: With dead ends: 1285 [2022-11-23 02:54:01,971 INFO L226 Difference]: Without dead ends: 733 [2022-11-23 02:54:01,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:54:01,977 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 706 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1191 Invalid, 3001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 02:54:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-23 02:54:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-23 02:54:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6793721973094171) internal successors, (749), 467 states have internal predecessors, (749), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:54:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 942 transitions. [2022-11-23 02:54:02,131 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 942 transitions. Word has length 64 [2022-11-23 02:54:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:02,132 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 942 transitions. [2022-11-23 02:54:02,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 942 transitions. [2022-11-23 02:54:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 02:54:02,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:02,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:02,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:54:02,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1497497726, now seen corresponding path program 1 times [2022-11-23 02:54:02,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:02,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104792598] [2022-11-23 02:54:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:54:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:54:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:02,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104792598] [2022-11-23 02:54:02,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104792598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:02,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:02,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:54:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989326501] [2022-11-23 02:54:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:54:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:54:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:54:02,731 INFO L87 Difference]: Start difference. First operand 570 states and 942 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:09,681 INFO L93 Difference]: Finished difference Result 1285 states and 2155 transitions. [2022-11-23 02:54:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:54:09,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-23 02:54:09,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:09,688 INFO L225 Difference]: With dead ends: 1285 [2022-11-23 02:54:09,688 INFO L226 Difference]: Without dead ends: 733 [2022-11-23 02:54:09,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:54:09,693 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 702 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:09,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1221 Invalid, 2999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 02:54:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-23 02:54:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-23 02:54:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6771300448430493) internal successors, (748), 467 states have internal predecessors, (748), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:54:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 941 transitions. [2022-11-23 02:54:09,799 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 941 transitions. Word has length 65 [2022-11-23 02:54:09,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:09,799 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 941 transitions. [2022-11-23 02:54:09,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 941 transitions. [2022-11-23 02:54:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 02:54:09,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:09,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:09,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:54:09,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash 376896572, now seen corresponding path program 1 times [2022-11-23 02:54:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:09,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298153718] [2022-11-23 02:54:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:54:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:54:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:10,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:10,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298153718] [2022-11-23 02:54:10,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298153718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:10,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:10,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:54:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542222894] [2022-11-23 02:54:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:54:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:54:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:54:10,342 INFO L87 Difference]: Start difference. First operand 570 states and 941 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:16,806 INFO L93 Difference]: Finished difference Result 1285 states and 2154 transitions. [2022-11-23 02:54:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:54:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-23 02:54:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:16,812 INFO L225 Difference]: With dead ends: 1285 [2022-11-23 02:54:16,813 INFO L226 Difference]: Without dead ends: 733 [2022-11-23 02:54:16,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:54:16,818 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1147 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:16,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1196 Invalid, 2965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [279 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 02:54:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-23 02:54:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-23 02:54:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6748878923766817) internal successors, (747), 467 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:54:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 940 transitions. [2022-11-23 02:54:16,995 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 940 transitions. Word has length 66 [2022-11-23 02:54:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:16,996 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 940 transitions. [2022-11-23 02:54:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 940 transitions. [2022-11-23 02:54:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:54:16,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:16,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:54:16,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1686384446, now seen corresponding path program 1 times [2022-11-23 02:54:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441420333] [2022-11-23 02:54:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:54:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:54:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:17,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:17,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441420333] [2022-11-23 02:54:17,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441420333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:17,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:17,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:54:17,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978399537] [2022-11-23 02:54:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:17,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:54:17,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:54:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:54:17,722 INFO L87 Difference]: Start difference. First operand 570 states and 940 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:54:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:26,836 INFO L93 Difference]: Finished difference Result 1262 states and 2104 transitions. [2022-11-23 02:54:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:54:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-11-23 02:54:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:26,846 INFO L225 Difference]: With dead ends: 1262 [2022-11-23 02:54:26,847 INFO L226 Difference]: Without dead ends: 759 [2022-11-23 02:54:26,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:54:26,856 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 810 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 5237 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 5237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:26,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2124 Invalid, 5369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 5237 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 02:54:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-11-23 02:54:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 583. [2022-11-23 02:54:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 479 states have internal predecessors, (762), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:54:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 959 transitions. [2022-11-23 02:54:27,047 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 959 transitions. Word has length 67 [2022-11-23 02:54:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:27,049 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 959 transitions. [2022-11-23 02:54:27,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:54:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 959 transitions. [2022-11-23 02:54:27,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:54:27,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:27,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:27,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:54:27,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1445844317, now seen corresponding path program 1 times [2022-11-23 02:54:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:27,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214751162] [2022-11-23 02:54:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:54:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:54:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:27,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:27,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214751162] [2022-11-23 02:54:27,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214751162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:27,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:27,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:54:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153558632] [2022-11-23 02:54:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:27,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:54:27,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:54:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:54:27,596 INFO L87 Difference]: Start difference. First operand 583 states and 959 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:33,773 INFO L93 Difference]: Finished difference Result 1276 states and 2127 transitions. [2022-11-23 02:54:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:54:33,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-23 02:54:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:33,782 INFO L225 Difference]: With dead ends: 1276 [2022-11-23 02:54:33,782 INFO L226 Difference]: Without dead ends: 755 [2022-11-23 02:54:33,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:54:33,787 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1241 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:33,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1182 Invalid, 2888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 02:54:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-23 02:54:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-23 02:54:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6600877192982457) internal successors, (757), 479 states have internal predecessors, (757), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:54:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 954 transitions. [2022-11-23 02:54:33,955 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 954 transitions. Word has length 67 [2022-11-23 02:54:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:33,956 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 954 transitions. [2022-11-23 02:54:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 954 transitions. [2022-11-23 02:54:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 02:54:33,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:33,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:33,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:54:33,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1491983771, now seen corresponding path program 1 times [2022-11-23 02:54:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767677716] [2022-11-23 02:54:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:54:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 02:54:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:34,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767677716] [2022-11-23 02:54:34,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767677716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:34,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:34,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:54:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795637150] [2022-11-23 02:54:34,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:34,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:54:34,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:54:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:54:34,456 INFO L87 Difference]: Start difference. First operand 583 states and 954 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:40,765 INFO L93 Difference]: Finished difference Result 1276 states and 2122 transitions. [2022-11-23 02:54:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:54:40,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-23 02:54:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:40,772 INFO L225 Difference]: With dead ends: 1276 [2022-11-23 02:54:40,772 INFO L226 Difference]: Without dead ends: 755 [2022-11-23 02:54:40,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:54:40,776 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1230 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:40,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1203 Invalid, 2871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 02:54:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-23 02:54:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-23 02:54:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6491228070175439) internal successors, (752), 479 states have internal predecessors, (752), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:54:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 949 transitions. [2022-11-23 02:54:40,915 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 949 transitions. Word has length 68 [2022-11-23 02:54:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:40,916 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 949 transitions. [2022-11-23 02:54:40,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 949 transitions. [2022-11-23 02:54:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 02:54:40,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:40,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:54:40,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:40,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash 678823650, now seen corresponding path program 1 times [2022-11-23 02:54:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:40,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959609552] [2022-11-23 02:54:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:54:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:54:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959609552] [2022-11-23 02:54:41,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959609552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:41,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:41,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:54:41,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152967816] [2022-11-23 02:54:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:41,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:54:41,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:54:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:54:41,468 INFO L87 Difference]: Start difference. First operand 583 states and 949 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:48,321 INFO L93 Difference]: Finished difference Result 1276 states and 2117 transitions. [2022-11-23 02:54:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:54:48,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-11-23 02:54:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:48,327 INFO L225 Difference]: With dead ends: 1276 [2022-11-23 02:54:48,328 INFO L226 Difference]: Without dead ends: 755 [2022-11-23 02:54:48,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:54:48,331 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 784 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:48,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1182 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 02:54:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-23 02:54:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-23 02:54:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.638157894736842) internal successors, (747), 479 states have internal predecessors, (747), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:54:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 944 transitions. [2022-11-23 02:54:48,478 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 944 transitions. Word has length 69 [2022-11-23 02:54:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:48,478 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 944 transitions. [2022-11-23 02:54:48,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:54:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 944 transitions. [2022-11-23 02:54:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:54:48,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:48,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:48,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:54:48,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1867098464, now seen corresponding path program 1 times [2022-11-23 02:54:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:48,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487841164] [2022-11-23 02:54:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:54:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 02:54:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487841164] [2022-11-23 02:54:49,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487841164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:49,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:49,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:54:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698646150] [2022-11-23 02:54:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:54:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:54:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:54:49,123 INFO L87 Difference]: Start difference. First operand 583 states and 944 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:54:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:54:58,421 INFO L93 Difference]: Finished difference Result 1268 states and 2094 transitions. [2022-11-23 02:54:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:54:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-11-23 02:54:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:54:58,426 INFO L225 Difference]: With dead ends: 1268 [2022-11-23 02:54:58,426 INFO L226 Difference]: Without dead ends: 762 [2022-11-23 02:54:58,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:54:58,429 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 776 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 5275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:54:58,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2092 Invalid, 5275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [135 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 02:54:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-23 02:54:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 583. [2022-11-23 02:54:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6359649122807018) internal successors, (746), 479 states have internal predecessors, (746), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:54:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 943 transitions. [2022-11-23 02:54:58,584 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 943 transitions. Word has length 70 [2022-11-23 02:54:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:54:58,585 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 943 transitions. [2022-11-23 02:54:58,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:54:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 943 transitions. [2022-11-23 02:54:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:54:58,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:54:58,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:58,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:54:58,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:54:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1002819520, now seen corresponding path program 1 times [2022-11-23 02:54:58,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:58,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788923373] [2022-11-23 02:54:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:58,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:54:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:54:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 02:54:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:54:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:54:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788923373] [2022-11-23 02:54:59,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788923373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:59,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:59,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:54:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810320013] [2022-11-23 02:54:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:54:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:54:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:54:59,135 INFO L87 Difference]: Start difference. First operand 583 states and 943 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:55:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:55:05,182 INFO L93 Difference]: Finished difference Result 1276 states and 2109 transitions. [2022-11-23 02:55:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:55:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-23 02:55:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:55:05,187 INFO L225 Difference]: With dead ends: 1276 [2022-11-23 02:55:05,187 INFO L226 Difference]: Without dead ends: 755 [2022-11-23 02:55:05,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:55:05,190 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1230 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:55:05,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1180 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 02:55:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-23 02:55:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-23 02:55:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.625) internal successors, (741), 479 states have internal predecessors, (741), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:55:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 938 transitions. [2022-11-23 02:55:05,348 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 938 transitions. Word has length 70 [2022-11-23 02:55:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:55:05,348 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 938 transitions. [2022-11-23 02:55:05,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:55:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 938 transitions. [2022-11-23 02:55:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 02:55:05,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:55:05,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:55:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:55:05,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:55:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:55:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash -465333563, now seen corresponding path program 1 times [2022-11-23 02:55:05,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:55:05,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872415453] [2022-11-23 02:55:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:55:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:55:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:55:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:55:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:55:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:55:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:55:05,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:55:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872415453] [2022-11-23 02:55:05,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872415453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:55:05,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:55:05,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:55:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890132957] [2022-11-23 02:55:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:55:05,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:55:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:55:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:55:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:55:05,939 INFO L87 Difference]: Start difference. First operand 583 states and 938 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:55:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:55:14,444 INFO L93 Difference]: Finished difference Result 1289 states and 2119 transitions. [2022-11-23 02:55:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:55:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-11-23 02:55:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:55:14,450 INFO L225 Difference]: With dead ends: 1289 [2022-11-23 02:55:14,450 INFO L226 Difference]: Without dead ends: 780 [2022-11-23 02:55:14,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:55:14,454 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1242 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:55:14,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 2076 Invalid, 5172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [291 Valid, 4881 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 02:55:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-23 02:55:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 586. [2022-11-23 02:55:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 459 states have (on average 1.618736383442266) internal successors, (743), 482 states have internal predecessors, (743), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:55:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 940 transitions. [2022-11-23 02:55:14,611 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 940 transitions. Word has length 71 [2022-11-23 02:55:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:55:14,611 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 940 transitions. [2022-11-23 02:55:14,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:55:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 940 transitions. [2022-11-23 02:55:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 02:55:14,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:55:14,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:55:14,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:55:14,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:55:14,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:55:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash 457333863, now seen corresponding path program 1 times [2022-11-23 02:55:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:55:14,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723482305] [2022-11-23 02:55:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:55:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:55:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:55:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:55:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:55:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:55:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:55:15,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:55:15,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723482305] [2022-11-23 02:55:15,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723482305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:55:15,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:55:15,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:55:15,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710380036] [2022-11-23 02:55:15,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:55:15,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:55:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:55:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:55:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:55:15,117 INFO L87 Difference]: Start difference. First operand 586 states and 940 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:55:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:55:22,144 INFO L93 Difference]: Finished difference Result 1285 states and 2110 transitions. [2022-11-23 02:55:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:55:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-11-23 02:55:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:55:22,149 INFO L225 Difference]: With dead ends: 1285 [2022-11-23 02:55:22,149 INFO L226 Difference]: Without dead ends: 761 [2022-11-23 02:55:22,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:55:22,151 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 780 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:55:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1182 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-23 02:55:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-11-23 02:55:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 586. [2022-11-23 02:55:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 459 states have (on average 1.607843137254902) internal successors, (738), 482 states have internal predecessors, (738), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:55:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 935 transitions. [2022-11-23 02:55:22,295 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 935 transitions. Word has length 71 [2022-11-23 02:55:22,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:55:22,295 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 935 transitions. [2022-11-23 02:55:22,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:55:22,296 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 935 transitions. [2022-11-23 02:55:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 02:55:22,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:55:22,298 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] [2022-11-23 02:55:22,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:55:22,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:55:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:55:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash -844649211, now seen corresponding path program 1 times [2022-11-23 02:55:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:55:22,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210696385] [2022-11-23 02:55:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:55:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:55:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:55:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:55:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:55:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:55:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:55:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:55:22,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210696385] [2022-11-23 02:55:22,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210696385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:55:22,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:55:22,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:55:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853143266] [2022-11-23 02:55:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:55:22,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:55:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:55:22,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:55:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:55:22,877 INFO L87 Difference]: Start difference. First operand 586 states and 935 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:55:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:55:31,618 INFO L93 Difference]: Finished difference Result 1295 states and 2116 transitions. [2022-11-23 02:55:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:55:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-23 02:55:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:55:31,623 INFO L225 Difference]: With dead ends: 1295 [2022-11-23 02:55:31,623 INFO L226 Difference]: Without dead ends: 786 [2022-11-23 02:55:31,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:55:31,624 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 773 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:55:31,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2101 Invalid, 5161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-23 02:55:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-23 02:55:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 590. [2022-11-23 02:55:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.6004319654427646) internal successors, (741), 486 states have internal predecessors, (741), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-23 02:55:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 938 transitions. [2022-11-23 02:55:31,740 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 938 transitions. Word has length 72 [2022-11-23 02:55:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:55:31,741 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 938 transitions. [2022-11-23 02:55:31,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:55:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 938 transitions. [2022-11-23 02:55:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 02:55:31,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:55:31,743 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] [2022-11-23 02:55:31,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:55:31,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:55:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:55:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 528932581, now seen corresponding path program 1 times [2022-11-23 02:55:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:55:31,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084262686] [2022-11-23 02:55:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:55:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:55:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:55:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:55:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:55:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:55:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:55:32,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:55:32,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084262686] [2022-11-23 02:55:32,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084262686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:55:32,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:55:32,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:55:32,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833587499] [2022-11-23 02:55:32,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:55:32,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:55:32,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:55:32,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:55:32,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:55:32,218 INFO L87 Difference]: Start difference. First operand 590 states and 938 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:55:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:55:38,956 INFO L93 Difference]: Finished difference Result 1333 states and 2155 transitions. [2022-11-23 02:55:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:55:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-23 02:55:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:55:38,962 INFO L225 Difference]: With dead ends: 1333 [2022-11-23 02:55:38,962 INFO L226 Difference]: Without dead ends: 741 [2022-11-23 02:55:38,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:55:38,964 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 694 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:55:38,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1176 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 02:55:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-23 02:55:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 571. [2022-11-23 02:55:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 447 states have (on average 1.6085011185682327) internal successors, (719), 468 states have internal predecessors, (719), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:55:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 912 transitions. [2022-11-23 02:55:39,097 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 912 transitions. Word has length 72 [2022-11-23 02:55:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:55:39,097 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 912 transitions. [2022-11-23 02:55:39,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:55:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 912 transitions. [2022-11-23 02:55:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 02:55:39,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:55:39,100 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] [2022-11-23 02:55:39,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:55:39,100 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:55:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:55:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -806899254, now seen corresponding path program 1 times [2022-11-23 02:55:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:55:39,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94358238] [2022-11-23 02:55:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:55:39,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:55:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:55:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:55:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 02:55:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:55:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:55:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:55:39,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94358238] [2022-11-23 02:55:39,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94358238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:55:39,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:55:39,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:55:39,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582518333] [2022-11-23 02:55:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:55:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:55:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:55:39,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:55:39,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:55:39,769 INFO L87 Difference]: Start difference. First operand 571 states and 912 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:55:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:55:48,115 INFO L93 Difference]: Finished difference Result 1268 states and 2070 transitions. [2022-11-23 02:55:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:55:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-11-23 02:55:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:55:48,119 INFO L225 Difference]: With dead ends: 1268 [2022-11-23 02:55:48,119 INFO L226 Difference]: Without dead ends: 762 [2022-11-23 02:55:48,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:55:48,121 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 747 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 4940 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 5074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 4940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:55:48,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2085 Invalid, 5074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 4940 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 02:55:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-23 02:55:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 576. [2022-11-23 02:55:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 452 states have (on average 1.6017699115044248) internal successors, (724), 473 states have internal predecessors, (724), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 02:55:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 917 transitions. [2022-11-23 02:55:48,246 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 917 transitions. Word has length 73 [2022-11-23 02:55:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:55:48,246 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 917 transitions. [2022-11-23 02:55:48,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:55:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 917 transitions. [2022-11-23 02:55:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 02:55:48,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:55:48,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:55:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:55:48,249 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:55:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:55:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -688964934, now seen corresponding path program 1 times [2022-11-23 02:55:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:55:48,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450112711] [2022-11-23 02:55:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:55:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:55:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:55:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:55:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:55:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:55:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:55:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:55:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:55:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:55:49,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450112711] [2022-11-23 02:55:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450112711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:55:49,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:55:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:55:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357883416] [2022-11-23 02:55:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:55:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:55:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:55:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:55:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:55:49,096 INFO L87 Difference]: Start difference. First operand 576 states and 917 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:56:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:56:03,808 INFO L93 Difference]: Finished difference Result 2081 states and 3485 transitions. [2022-11-23 02:56:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:56:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-11-23 02:56:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:56:03,820 INFO L225 Difference]: With dead ends: 2081 [2022-11-23 02:56:03,820 INFO L226 Difference]: Without dead ends: 1583 [2022-11-23 02:56:03,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:56:03,823 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 2751 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 5134 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2842 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 5917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 5134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:56:03,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2842 Valid, 1776 Invalid, 5917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [783 Valid, 5134 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-11-23 02:56:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-11-23 02:56:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1091. [2022-11-23 02:56:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 854 states have (on average 1.6346604215456675) internal successors, (1396), 884 states have internal predecessors, (1396), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2022-11-23 02:56:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1782 transitions. [2022-11-23 02:56:04,140 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1782 transitions. Word has length 74 [2022-11-23 02:56:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:56:04,140 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1782 transitions. [2022-11-23 02:56:04,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:56:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1782 transitions. [2022-11-23 02:56:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 02:56:04,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:56:04,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:56:04,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 02:56:04,148 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:56:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:56:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash -15934398, now seen corresponding path program 1 times [2022-11-23 02:56:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:56:04,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764632409] [2022-11-23 02:56:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:56:04,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:56:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:56:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:56:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:56:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:56:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 02:56:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:56:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-23 02:56:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 02:56:05,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:56:05,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764632409] [2022-11-23 02:56:05,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764632409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:56:05,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:56:05,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-23 02:56:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875422530] [2022-11-23 02:56:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:56:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:56:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:56:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:56:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:56:05,801 INFO L87 Difference]: Start difference. First operand 1091 states and 1782 transitions. Second operand has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-23 02:56:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:56:34,990 INFO L93 Difference]: Finished difference Result 3971 states and 6874 transitions. [2022-11-23 02:56:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 02:56:34,990 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) Word has length 126 [2022-11-23 02:56:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:56:35,013 INFO L225 Difference]: With dead ends: 3971 [2022-11-23 02:56:35,013 INFO L226 Difference]: Without dead ends: 2958 [2022-11-23 02:56:35,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=827, Invalid=3729, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 02:56:35,023 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 5341 mSDsluCounter, 5654 mSDsCounter, 0 mSdLazyCounter, 18107 mSolverCounterSat, 2897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 21004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2897 IncrementalHoareTripleChecker+Valid, 18107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:56:35,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5341 Valid, 6315 Invalid, 21004 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2897 Valid, 18107 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2022-11-23 02:56:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-11-23 02:56:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1406. [2022-11-23 02:56:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1093 states have (on average 1.5919487648673376) internal successors, (1740), 1119 states have internal predecessors, (1740), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (313), 236 states have call predecessors, (313), 235 states have call successors, (313) [2022-11-23 02:56:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2293 transitions. [2022-11-23 02:56:35,504 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2293 transitions. Word has length 126 [2022-11-23 02:56:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:56:35,504 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2293 transitions. [2022-11-23 02:56:35,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-23 02:56:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2293 transitions. [2022-11-23 02:56:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 02:56:35,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:56:35,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:56:35,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:56:35,510 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:56:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:56:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash 869484430, now seen corresponding path program 1 times [2022-11-23 02:56:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:56:35,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843515967] [2022-11-23 02:56:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:56:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:56:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:35,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:56:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:56:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:56:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:56:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:56:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 02:56:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:56:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:56:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:56:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:56:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:56:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:56:36,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843515967] [2022-11-23 02:56:36,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843515967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:56:36,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:56:36,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 02:56:36,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421464032] [2022-11-23 02:56:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:56:36,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:56:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:56:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:56:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:56:36,883 INFO L87 Difference]: Start difference. First operand 1406 states and 2293 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 02:57:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:57:21,532 INFO L93 Difference]: Finished difference Result 7227 states and 12993 transitions. [2022-11-23 02:57:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-23 02:57:21,533 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 128 [2022-11-23 02:57:21,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:57:21,578 INFO L225 Difference]: With dead ends: 7227 [2022-11-23 02:57:21,579 INFO L226 Difference]: Without dead ends: 5899 [2022-11-23 02:57:21,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=760, Invalid=4496, Unknown=0, NotChecked=0, Total=5256 [2022-11-23 02:57:21,597 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 7167 mSDsluCounter, 8843 mSDsCounter, 0 mSdLazyCounter, 27606 mSolverCounterSat, 3692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7179 SdHoareTripleChecker+Valid, 10093 SdHoareTripleChecker+Invalid, 31298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3692 IncrementalHoareTripleChecker+Valid, 27606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:57:21,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7179 Valid, 10093 Invalid, 31298 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3692 Valid, 27606 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2022-11-23 02:57:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2022-11-23 02:57:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 3336. [2022-11-23 02:57:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 2500 states have (on average 1.5884) internal successors, (3971), 2580 states have internal predecessors, (3971), 670 states have call successors, (670), 118 states have call predecessors, (670), 165 states have return successors, (1036), 680 states have call predecessors, (1036), 665 states have call successors, (1036) [2022-11-23 02:57:22,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 5677 transitions. [2022-11-23 02:57:22,727 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 5677 transitions. Word has length 128 [2022-11-23 02:57:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:57:22,727 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 5677 transitions. [2022-11-23 02:57:22,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 02:57:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 5677 transitions. [2022-11-23 02:57:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 02:57:22,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:57:22,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:57:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 02:57:22,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:57:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:57:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1169298699, now seen corresponding path program 1 times [2022-11-23 02:57:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:57:22,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353911105] [2022-11-23 02:57:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:57:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:57:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:57:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:57:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:57:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:57:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:57:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 02:57:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 02:57:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 02:57:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:57:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:57:23,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353911105] [2022-11-23 02:57:23,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353911105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:57:23,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633762576] [2022-11-23 02:57:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:57:23,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:57:23,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:57:23,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:57:23,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:57:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:24,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:57:24,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:57:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 02:57:24,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:57:24,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633762576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:57:24,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:57:24,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-23 02:57:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124222859] [2022-11-23 02:57:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:57:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:57:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:57:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:57:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:57:24,633 INFO L87 Difference]: Start difference. First operand 3336 states and 5677 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 02:57:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:57:30,407 INFO L93 Difference]: Finished difference Result 8558 states and 14702 transitions. [2022-11-23 02:57:30,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:57:30,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-11-23 02:57:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:57:30,441 INFO L225 Difference]: With dead ends: 8558 [2022-11-23 02:57:30,441 INFO L226 Difference]: Without dead ends: 5180 [2022-11-23 02:57:30,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-11-23 02:57:30,463 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1744 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 5199 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 5539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 5199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:57:30,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 2006 Invalid, 5539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 5199 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 02:57:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2022-11-23 02:57:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 4959. [2022-11-23 02:57:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 3742 states have (on average 1.5836451095670765) internal successors, (5926), 3836 states have internal predecessors, (5926), 970 states have call successors, (970), 170 states have call predecessors, (970), 246 states have return successors, (1540), 995 states have call predecessors, (1540), 965 states have call successors, (1540) [2022-11-23 02:57:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 8436 transitions. [2022-11-23 02:57:32,469 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 8436 transitions. Word has length 127 [2022-11-23 02:57:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:57:32,470 INFO L495 AbstractCegarLoop]: Abstraction has 4959 states and 8436 transitions. [2022-11-23 02:57:32,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 02:57:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 8436 transitions. [2022-11-23 02:57:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 02:57:32,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:57:32,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:57:32,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:57:32,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:57:32,693 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:57:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:57:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1641972810, now seen corresponding path program 1 times [2022-11-23 02:57:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:57:32,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414203338] [2022-11-23 02:57:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:57:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:57:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:57:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:57:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:57:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:57:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:57:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 02:57:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 02:57:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:57:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:57:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:57:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414203338] [2022-11-23 02:57:33,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414203338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:57:33,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045372736] [2022-11-23 02:57:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:57:33,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:57:33,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:57:33,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:57:34,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:57:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:34,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:57:34,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:57:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:57:34,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:57:34,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045372736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:57:34,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:57:34,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 20 [2022-11-23 02:57:34,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863757008] [2022-11-23 02:57:34,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:57:34,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:57:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:57:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:57:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:57:34,672 INFO L87 Difference]: Start difference. First operand 4959 states and 8436 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 02:57:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:57:37,055 INFO L93 Difference]: Finished difference Result 9914 states and 17272 transitions. [2022-11-23 02:57:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:57:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-11-23 02:57:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:57:37,095 INFO L225 Difference]: With dead ends: 9914 [2022-11-23 02:57:37,095 INFO L226 Difference]: Without dead ends: 5041 [2022-11-23 02:57:37,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:57:37,141 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 847 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:57:37,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2268 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:57:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2022-11-23 02:57:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 2188. [2022-11-23 02:57:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1692 states have (on average 1.589243498817967) internal successors, (2689), 1732 states have internal predecessors, (2689), 374 states have call successors, (374), 93 states have call predecessors, (374), 121 states have return successors, (508), 373 states have call predecessors, (508), 369 states have call successors, (508) [2022-11-23 02:57:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3571 transitions. [2022-11-23 02:57:38,180 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3571 transitions. Word has length 128 [2022-11-23 02:57:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:57:38,181 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3571 transitions. [2022-11-23 02:57:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 02:57:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3571 transitions. [2022-11-23 02:57:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 02:57:38,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:57:38,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:57:38,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 02:57:38,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 02:57:38,396 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:57:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:57:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash 677248839, now seen corresponding path program 1 times [2022-11-23 02:57:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:57:38,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493427540] [2022-11-23 02:57:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:57:38,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:57:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:57:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:38,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:57:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:57:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:57:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 02:57:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:57:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:57:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 02:57:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 02:57:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:57:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 02:57:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:57:39,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493427540] [2022-11-23 02:57:39,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493427540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:57:39,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:57:39,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 02:57:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741341181] [2022-11-23 02:57:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:57:39,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:57:39,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:57:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:57:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:57:39,686 INFO L87 Difference]: Start difference. First operand 2188 states and 3571 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 02:58:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:58:14,891 INFO L93 Difference]: Finished difference Result 8589 states and 15121 transitions. [2022-11-23 02:58:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 02:58:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-11-23 02:58:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:58:14,929 INFO L225 Difference]: With dead ends: 8589 [2022-11-23 02:58:14,929 INFO L226 Difference]: Without dead ends: 6479 [2022-11-23 02:58:14,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 02:58:14,950 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 6621 mSDsluCounter, 6837 mSDsCounter, 0 mSdLazyCounter, 20806 mSolverCounterSat, 3383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6621 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 24189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3383 IncrementalHoareTripleChecker+Valid, 20806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:58:14,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6621 Valid, 7880 Invalid, 24189 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3383 Valid, 20806 Invalid, 0 Unknown, 0 Unchecked, 26.3s Time] [2022-11-23 02:58:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2022-11-23 02:58:17,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 5079. [2022-11-23 02:58:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 3838 states have (on average 1.5846795205836373) internal successors, (6082), 3944 states have internal predecessors, (6082), 970 states have call successors, (970), 182 states have call predecessors, (970), 270 states have return successors, (1524), 995 states have call predecessors, (1524), 965 states have call successors, (1524) [2022-11-23 02:58:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 8576 transitions. [2022-11-23 02:58:17,132 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 8576 transitions. Word has length 131 [2022-11-23 02:58:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:58:17,132 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 8576 transitions. [2022-11-23 02:58:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 02:58:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 8576 transitions. [2022-11-23 02:58:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-23 02:58:17,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:58:17,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:58:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 02:58:17,145 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:58:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:58:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 595592522, now seen corresponding path program 1 times [2022-11-23 02:58:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:58:17,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343742629] [2022-11-23 02:58:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:58:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:58:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:58:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:58:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:58:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:58:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:58:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:58:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-23 02:58:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 02:58:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 02:58:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:58:18,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343742629] [2022-11-23 02:58:18,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343742629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:58:18,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025438505] [2022-11-23 02:58:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:58:18,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:58:18,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:58:18,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:58:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:58:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:18,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:58:18,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:58:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:58:18,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:58:18,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025438505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:58:18,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:58:18,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-11-23 02:58:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305238925] [2022-11-23 02:58:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:58:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:58:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:58:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:58:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:58:18,808 INFO L87 Difference]: Start difference. First operand 5079 states and 8576 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 02:58:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:58:21,590 INFO L93 Difference]: Finished difference Result 10154 states and 17542 transitions. [2022-11-23 02:58:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:58:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-11-23 02:58:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:58:21,615 INFO L225 Difference]: With dead ends: 10154 [2022-11-23 02:58:21,615 INFO L226 Difference]: Without dead ends: 5161 [2022-11-23 02:58:21,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:58:21,647 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 829 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:58:21,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2268 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:58:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2022-11-23 02:58:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5137. [2022-11-23 02:58:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 3890 states have (on average 1.592287917737789) internal successors, (6194), 4006 states have internal predecessors, (6194), 970 states have call successors, (970), 194 states have call predecessors, (970), 276 states have return successors, (1432), 979 states have call predecessors, (1432), 965 states have call successors, (1432) [2022-11-23 02:58:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 8596 transitions. [2022-11-23 02:58:23,990 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 8596 transitions. Word has length 132 [2022-11-23 02:58:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:58:23,991 INFO L495 AbstractCegarLoop]: Abstraction has 5137 states and 8596 transitions. [2022-11-23 02:58:23,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 02:58:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 8596 transitions. [2022-11-23 02:58:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 02:58:24,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:58:24,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:58:24,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:58:24,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 02:58:24,211 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:58:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:58:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1462667079, now seen corresponding path program 1 times [2022-11-23 02:58:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:58:24,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885361806] [2022-11-23 02:58:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:58:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:58:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:58:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:58:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:58:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:58:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 02:58:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:58:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:58:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:58:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:58:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:58:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 02:58:25,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:58:25,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885361806] [2022-11-23 02:58:25,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885361806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:58:25,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:58:25,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 02:58:25,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812055920] [2022-11-23 02:58:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:58:25,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:58:25,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:58:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:58:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:58:25,730 INFO L87 Difference]: Start difference. First operand 5137 states and 8596 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-23 02:59:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:59:07,461 INFO L93 Difference]: Finished difference Result 16306 states and 29571 transitions. [2022-11-23 02:59:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-23 02:59:07,462 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) Word has length 135 [2022-11-23 02:59:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:59:07,616 INFO L225 Difference]: With dead ends: 16306 [2022-11-23 02:59:07,617 INFO L226 Difference]: Without dead ends: 11255 [2022-11-23 02:59:07,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 02:59:07,655 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 4994 mSDsluCounter, 7180 mSDsCounter, 0 mSdLazyCounter, 21445 mSolverCounterSat, 2444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5000 SdHoareTripleChecker+Valid, 8182 SdHoareTripleChecker+Invalid, 23889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2444 IncrementalHoareTripleChecker+Valid, 21445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:59:07,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5000 Valid, 8182 Invalid, 23889 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2444 Valid, 21445 Invalid, 0 Unknown, 0 Unchecked, 30.7s Time] [2022-11-23 02:59:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11255 states. [2022-11-23 02:59:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11255 to 8348. [2022-11-23 02:59:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8348 states, 6355 states have (on average 1.5946498819826909) internal successors, (10134), 6523 states have internal predecessors, (10134), 1563 states have call successors, (1563), 289 states have call predecessors, (1563), 429 states have return successors, (2646), 1593 states have call predecessors, (2646), 1558 states have call successors, (2646) [2022-11-23 02:59:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 14343 transitions. [2022-11-23 02:59:11,063 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 14343 transitions. Word has length 135 [2022-11-23 02:59:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:59:11,064 INFO L495 AbstractCegarLoop]: Abstraction has 8348 states and 14343 transitions. [2022-11-23 02:59:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-23 02:59:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 14343 transitions. [2022-11-23 02:59:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 02:59:11,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:59:11,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:59:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 02:59:11,079 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:59:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:59:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash 744721718, now seen corresponding path program 1 times [2022-11-23 02:59:11,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:59:11,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981372966] [2022-11-23 02:59:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:59:11,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:59:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:59:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:11,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:59:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:11,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:59:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:59:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 02:59:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:59:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:59:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:59:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 02:59:12,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:59:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981372966] [2022-11-23 02:59:12,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981372966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:59:12,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:59:12,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:59:12,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484661296] [2022-11-23 02:59:12,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:59:12,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:59:12,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:59:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:59:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:59:12,196 INFO L87 Difference]: Start difference. First operand 8348 states and 14343 transitions. Second operand has 11 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:59:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:59:27,023 INFO L93 Difference]: Finished difference Result 15335 states and 26581 transitions. [2022-11-23 02:59:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:59:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2022-11-23 02:59:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:59:27,073 INFO L225 Difference]: With dead ends: 15335 [2022-11-23 02:59:27,074 INFO L226 Difference]: Without dead ends: 10002 [2022-11-23 02:59:27,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-11-23 02:59:27,092 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2366 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 5366 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 6077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 5366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:59:27,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 3234 Invalid, 6077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [711 Valid, 5366 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 02:59:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2022-11-23 02:59:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 8354. [2022-11-23 02:59:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 6361 states have (on average 1.5940889797201698) internal successors, (10140), 6529 states have internal predecessors, (10140), 1563 states have call successors, (1563), 289 states have call predecessors, (1563), 429 states have return successors, (2646), 1593 states have call predecessors, (2646), 1558 states have call successors, (2646) [2022-11-23 02:59:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 14349 transitions. [2022-11-23 02:59:31,118 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 14349 transitions. Word has length 135 [2022-11-23 02:59:31,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:59:31,118 INFO L495 AbstractCegarLoop]: Abstraction has 8354 states and 14349 transitions. [2022-11-23 02:59:31,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:59:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 14349 transitions. [2022-11-23 02:59:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 02:59:31,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:59:31,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:59:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 02:59:31,137 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:59:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:59:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1251842829, now seen corresponding path program 1 times [2022-11-23 02:59:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:59:31,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726147657] [2022-11-23 02:59:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:59:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:59:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:59:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:59:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:59:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:59:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 02:59:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:59:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:59:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:59:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 02:59:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:59:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726147657] [2022-11-23 02:59:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726147657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:59:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:59:32,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 02:59:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127354745] [2022-11-23 02:59:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:59:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:59:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:59:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:59:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:59:32,804 INFO L87 Difference]: Start difference. First operand 8354 states and 14349 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:59:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:59:52,463 INFO L93 Difference]: Finished difference Result 20093 states and 35858 transitions. [2022-11-23 02:59:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:59:52,464 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-11-23 02:59:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:59:52,567 INFO L225 Difference]: With dead ends: 20093 [2022-11-23 02:59:52,567 INFO L226 Difference]: Without dead ends: 11853 [2022-11-23 02:59:52,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2022-11-23 02:59:52,611 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 3685 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 6900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:59:52,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3685 Valid, 3271 Invalid, 6900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1777 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-23 02:59:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2022-11-23 02:59:56,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 8874. [2022-11-23 02:59:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8874 states, 6737 states have (on average 1.588837761614962) internal successors, (10704), 6922 states have internal predecessors, (10704), 1676 states have call successors, (1676), 289 states have call predecessors, (1676), 460 states have return successors, (3062), 1725 states have call predecessors, (3062), 1671 states have call successors, (3062) [2022-11-23 02:59:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8874 states to 8874 states and 15442 transitions. [2022-11-23 02:59:57,001 INFO L78 Accepts]: Start accepts. Automaton has 8874 states and 15442 transitions. Word has length 141 [2022-11-23 02:59:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:59:57,002 INFO L495 AbstractCegarLoop]: Abstraction has 8874 states and 15442 transitions. [2022-11-23 02:59:57,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:59:57,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8874 states and 15442 transitions. [2022-11-23 02:59:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 02:59:57,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:59:57,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:59:57,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 02:59:57,021 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:59:57,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:59:57,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1572130410, now seen corresponding path program 1 times [2022-11-23 02:59:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:59:57,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806406500] [2022-11-23 02:59:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:59:57,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:59:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:59:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:59:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:59:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:59:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 02:59:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:59:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:59:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:59:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:59:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:59:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 02:59:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:59:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806406500] [2022-11-23 02:59:57,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806406500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:59:57,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:59:57,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:59:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090238059] [2022-11-23 02:59:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:59:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:59:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:59:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:59:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:59:57,927 INFO L87 Difference]: Start difference. First operand 8874 states and 15442 transitions. Second operand has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 03:00:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:00:10,719 INFO L93 Difference]: Finished difference Result 13240 states and 23458 transitions. [2022-11-23 03:00:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:00:10,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 141 [2022-11-23 03:00:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:00:10,744 INFO L225 Difference]: With dead ends: 13240 [2022-11-23 03:00:10,744 INFO L226 Difference]: Without dead ends: 4380 [2022-11-23 03:00:10,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:00:10,773 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1952 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5300 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 5868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 5300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:00:10,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 3138 Invalid, 5868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [568 Valid, 5300 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-23 03:00:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2022-11-23 03:00:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 2145. [2022-11-23 03:00:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1659 states have (on average 1.6033755274261603) internal successors, (2660), 1713 states have internal predecessors, (2660), 358 states have call successors, (358), 99 states have call predecessors, (358), 127 states have return successors, (468), 343 states have call predecessors, (468), 353 states have call successors, (468) [2022-11-23 03:00:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3486 transitions. [2022-11-23 03:00:11,807 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3486 transitions. Word has length 141 [2022-11-23 03:00:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:00:11,807 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 3486 transitions. [2022-11-23 03:00:11,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 03:00:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3486 transitions. [2022-11-23 03:00:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 03:00:11,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:00:11,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:00:11,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 03:00:11,810 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:00:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:00:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash 364483103, now seen corresponding path program 1 times [2022-11-23 03:00:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:00:11,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311157945] [2022-11-23 03:00:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:00:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:00:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:00:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:00:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:00:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:00:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:00:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:00:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 03:00:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 03:00:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 03:00:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:00:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311157945] [2022-11-23 03:00:13,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311157945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:00:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076846607] [2022-11-23 03:00:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:00:13,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:00:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:00:13,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:00:13,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:00:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:13,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:00:13,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:00:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 03:00:14,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:00:14,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076846607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:00:14,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:00:14,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2022-11-23 03:00:14,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863143478] [2022-11-23 03:00:14,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:00:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:00:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:00:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:00:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:00:14,100 INFO L87 Difference]: Start difference. First operand 2145 states and 3486 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-23 03:00:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:00:15,740 INFO L93 Difference]: Finished difference Result 2292 states and 3745 transitions. [2022-11-23 03:00:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:00:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 144 [2022-11-23 03:00:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:00:15,753 INFO L225 Difference]: With dead ends: 2292 [2022-11-23 03:00:15,753 INFO L226 Difference]: Without dead ends: 2277 [2022-11-23 03:00:15,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:00:15,757 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 857 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:00:15,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1526 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:00:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-11-23 03:00:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2157. [2022-11-23 03:00:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1671 states have (on average 1.5990424895272293) internal successors, (2672), 1725 states have internal predecessors, (2672), 358 states have call successors, (358), 99 states have call predecessors, (358), 127 states have return successors, (468), 343 states have call predecessors, (468), 353 states have call successors, (468) [2022-11-23 03:00:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3498 transitions. [2022-11-23 03:00:16,937 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3498 transitions. Word has length 144 [2022-11-23 03:00:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:00:16,937 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 3498 transitions. [2022-11-23 03:00:16,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-23 03:00:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3498 transitions. [2022-11-23 03:00:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-23 03:00:16,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:00:16,942 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:00:16,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:00:17,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-23 03:00:17,143 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:00:17,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:00:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 912693114, now seen corresponding path program 1 times [2022-11-23 03:00:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:00:17,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438312412] [2022-11-23 03:00:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:00:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:00:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:00:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:00:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:00:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:00:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:00:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:00:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 03:00:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 03:00:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 03:00:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 03:00:18,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:00:18,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438312412] [2022-11-23 03:00:18,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438312412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:00:18,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:00:18,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:00:18,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566569075] [2022-11-23 03:00:18,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:00:18,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:00:18,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:00:18,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:00:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:00:18,339 INFO L87 Difference]: Start difference. First operand 2157 states and 3498 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-23 03:00:47,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:00:47,510 INFO L93 Difference]: Finished difference Result 8236 states and 13968 transitions. [2022-11-23 03:00:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 03:00:47,511 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 150 [2022-11-23 03:00:47,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:00:47,548 INFO L225 Difference]: With dead ends: 8236 [2022-11-23 03:00:47,548 INFO L226 Difference]: Without dead ends: 6132 [2022-11-23 03:00:47,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=558, Invalid=2304, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 03:00:47,562 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 4605 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 6806 mSolverCounterSat, 1881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 8687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1881 IncrementalHoareTripleChecker+Valid, 6806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:00:47,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 3338 Invalid, 8687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1881 Valid, 6806 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-11-23 03:00:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2022-11-23 03:00:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 4592. [2022-11-23 03:00:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 3577 states have (on average 1.5977075761811574) internal successors, (5715), 3674 states have internal predecessors, (5715), 732 states have call successors, (732), 225 states have call predecessors, (732), 282 states have return successors, (1044), 714 states have call predecessors, (1044), 727 states have call successors, (1044) [2022-11-23 03:00:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 7491 transitions. [2022-11-23 03:00:49,628 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 7491 transitions. Word has length 150 [2022-11-23 03:00:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:00:49,629 INFO L495 AbstractCegarLoop]: Abstraction has 4592 states and 7491 transitions. [2022-11-23 03:00:49,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-23 03:00:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 7491 transitions. [2022-11-23 03:00:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-23 03:00:49,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:00:49,634 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:00:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 03:00:49,634 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:00:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:00:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash 471964120, now seen corresponding path program 1 times [2022-11-23 03:00:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:00:49,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000634311] [2022-11-23 03:00:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:00:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:00:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:00:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:00:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:00:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:00:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:00:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:50,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:00:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:00:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 03:00:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 03:00:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 03:00:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 03:00:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 03:00:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:00:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000634311] [2022-11-23 03:00:51,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000634311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:00:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585990016] [2022-11-23 03:00:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:00:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:00:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:00:51,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:00:51,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:00:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:00:51,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:00:51,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:00:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 03:00:51,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:00:51,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585990016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:00:51,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:00:51,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2022-11-23 03:00:51,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155559531] [2022-11-23 03:00:51,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:00:51,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:00:51,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:00:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:00:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-11-23 03:00:51,903 INFO L87 Difference]: Start difference. First operand 4592 states and 7491 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-23 03:00:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:00:59,710 INFO L93 Difference]: Finished difference Result 10742 states and 17732 transitions. [2022-11-23 03:00:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 03:00:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 161 [2022-11-23 03:00:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:00:59,742 INFO L225 Difference]: With dead ends: 10742 [2022-11-23 03:00:59,742 INFO L226 Difference]: Without dead ends: 6203 [2022-11-23 03:00:59,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 03:00:59,756 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 2964 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 5072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:00:59,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 2382 Invalid, 5072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 4459 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 03:00:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2022-11-23 03:01:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5668. [2022-11-23 03:01:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 4403 states have (on average 1.6045877810583693) internal successors, (7065), 4536 states have internal predecessors, (7065), 914 states have call successors, (914), 257 states have call predecessors, (914), 350 states have return successors, (1302), 896 states have call predecessors, (1302), 909 states have call successors, (1302) [2022-11-23 03:01:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 9281 transitions. [2022-11-23 03:01:02,504 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 9281 transitions. Word has length 161 [2022-11-23 03:01:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:01:02,505 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 9281 transitions. [2022-11-23 03:01:02,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-23 03:01:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 9281 transitions. [2022-11-23 03:01:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 03:01:02,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:01:02,511 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:01:02,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:01:02,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:01:02,719 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:01:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:01:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash 596946938, now seen corresponding path program 1 times [2022-11-23 03:01:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:01:02,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975079824] [2022-11-23 03:01:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:01:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:01:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:01:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:01:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:01:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:01:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:01:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:01:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:01:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 03:01:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 03:01:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 03:01:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 03:01:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 03:01:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:01:03,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975079824] [2022-11-23 03:01:03,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975079824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:01:03,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:01:03,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:01:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144526944] [2022-11-23 03:01:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:01:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:01:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:01:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:01:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:01:03,928 INFO L87 Difference]: Start difference. First operand 5668 states and 9281 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 8 states have internal predecessors, (112), 5 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-23 03:01:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:01:30,522 INFO L93 Difference]: Finished difference Result 13363 states and 22581 transitions. [2022-11-23 03:01:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 03:01:30,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 8 states have internal predecessors, (112), 5 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 166 [2022-11-23 03:01:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:01:30,556 INFO L225 Difference]: With dead ends: 13363 [2022-11-23 03:01:30,556 INFO L226 Difference]: Without dead ends: 7748 [2022-11-23 03:01:30,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 03:01:30,574 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 4114 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 7591 mSolverCounterSat, 1301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 3711 SdHoareTripleChecker+Invalid, 8892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1301 IncrementalHoareTripleChecker+Valid, 7591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:01:30,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 3711 Invalid, 8892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1301 Valid, 7591 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2022-11-23 03:01:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2022-11-23 03:01:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 6220. [2022-11-23 03:01:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6220 states, 4867 states have (on average 1.611054037394699) internal successors, (7841), 5000 states have internal predecessors, (7841), 970 states have call successors, (970), 289 states have call predecessors, (970), 382 states have return successors, (1376), 952 states have call predecessors, (1376), 965 states have call successors, (1376) [2022-11-23 03:01:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 10187 transitions. [2022-11-23 03:01:33,613 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 10187 transitions. Word has length 166 [2022-11-23 03:01:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:01:33,613 INFO L495 AbstractCegarLoop]: Abstraction has 6220 states and 10187 transitions. [2022-11-23 03:01:33,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 8 states have internal predecessors, (112), 5 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-23 03:01:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 10187 transitions. [2022-11-23 03:01:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 03:01:33,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:01:33,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:01:33,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 03:01:33,619 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:01:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:01:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 260532643, now seen corresponding path program 1 times [2022-11-23 03:01:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:01:33,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594501544] [2022-11-23 03:01:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:01:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:01:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:01:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:01:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:01:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:01:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:01:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:01:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:01:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:01:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 03:01:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:01:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:01:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 03:01:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:01:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:01:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:01:34,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:01:34,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594501544] [2022-11-23 03:01:34,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594501544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:01:34,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:01:34,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:01:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639261130] [2022-11-23 03:01:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:01:34,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:01:34,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:01:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:01:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:01:34,715 INFO L87 Difference]: Start difference. First operand 6220 states and 10187 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 03:02:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:12,015 INFO L93 Difference]: Finished difference Result 21012 states and 35697 transitions. [2022-11-23 03:02:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-23 03:02:12,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 171 [2022-11-23 03:02:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:12,106 INFO L225 Difference]: With dead ends: 21012 [2022-11-23 03:02:12,106 INFO L226 Difference]: Without dead ends: 14853 [2022-11-23 03:02:12,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 03:02:12,139 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 3433 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 11679 mSolverCounterSat, 1733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 13412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1733 IncrementalHoareTripleChecker+Valid, 11679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:12,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 4035 Invalid, 13412 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1733 Valid, 11679 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time] [2022-11-23 03:02:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14853 states. [2022-11-23 03:02:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14853 to 7950. [2022-11-23 03:02:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7950 states, 6241 states have (on average 1.6120813972119852) internal successors, (10061), 6402 states have internal predecessors, (10061), 1212 states have call successors, (1212), 375 states have call predecessors, (1212), 496 states have return successors, (1730), 1194 states have call predecessors, (1730), 1207 states have call successors, (1730) [2022-11-23 03:02:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 13003 transitions. [2022-11-23 03:02:16,496 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 13003 transitions. Word has length 171 [2022-11-23 03:02:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:16,497 INFO L495 AbstractCegarLoop]: Abstraction has 7950 states and 13003 transitions. [2022-11-23 03:02:16,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 03:02:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 13003 transitions. [2022-11-23 03:02:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 03:02:16,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:16,500 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:16,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-23 03:02:16,500 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:02:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2106161951, now seen corresponding path program 1 times [2022-11-23 03:02:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:02:16,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318123605] [2022-11-23 03:02:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:02:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:02:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:02:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:02:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:02:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:02:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:02:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:02:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 03:02:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:02:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:02:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 03:02:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:02:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 03:02:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:02:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318123605] [2022-11-23 03:02:17,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318123605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:02:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94961410] [2022-11-23 03:02:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:02:17,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:02:17,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:02:17,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:02:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:18,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 03:02:18,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:02:18,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:02:18,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94961410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:18,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:02:18,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-23 03:02:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307712054] [2022-11-23 03:02:18,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:18,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:02:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:02:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:02:18,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:02:18,578 INFO L87 Difference]: Start difference. First operand 7950 states and 13003 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 03:02:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:28,454 INFO L93 Difference]: Finished difference Result 21004 states and 34996 transitions. [2022-11-23 03:02:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:02:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 171 [2022-11-23 03:02:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:28,509 INFO L225 Difference]: With dead ends: 21004 [2022-11-23 03:02:28,509 INFO L226 Difference]: Without dead ends: 13099 [2022-11-23 03:02:28,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:02:28,532 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1903 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:28,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 959 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 03:02:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13099 states. [2022-11-23 03:02:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13099 to 12463. [2022-11-23 03:02:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12463 states, 9747 states have (on average 1.603980712013953) internal successors, (15634), 10031 states have internal predecessors, (15634), 1911 states have call successors, (1911), 588 states have call predecessors, (1911), 804 states have return successors, (2970), 1897 states have call predecessors, (2970), 1906 states have call successors, (2970) [2022-11-23 03:02:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12463 states to 12463 states and 20515 transitions. [2022-11-23 03:02:35,083 INFO L78 Accepts]: Start accepts. Automaton has 12463 states and 20515 transitions. Word has length 171 [2022-11-23 03:02:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:35,083 INFO L495 AbstractCegarLoop]: Abstraction has 12463 states and 20515 transitions. [2022-11-23 03:02:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 03:02:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12463 states and 20515 transitions. [2022-11-23 03:02:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-23 03:02:35,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:35,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:35,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:02:35,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:02:35,289 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:02:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash -866791959, now seen corresponding path program 1 times [2022-11-23 03:02:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:02:35,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757121730] [2022-11-23 03:02:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:02:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:02:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:02:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:02:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:02:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:02:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:02:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:02:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:02:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 03:02:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:02:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:02:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 03:02:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:02:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 03:02:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:02:36,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757121730] [2022-11-23 03:02:36,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757121730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:02:36,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45424389] [2022-11-23 03:02:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:36,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:02:36,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:02:36,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:02:36,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:02:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:37,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 03:02:37,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:02:37,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:02:37,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45424389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:37,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:02:37,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-23 03:02:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938523166] [2022-11-23 03:02:37,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:37,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:02:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:02:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:02:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:02:37,275 INFO L87 Difference]: Start difference. First operand 12463 states and 20515 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 03:02:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:53,119 INFO L93 Difference]: Finished difference Result 35595 states and 60812 transitions. [2022-11-23 03:02:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:02:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 172 [2022-11-23 03:02:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:53,277 INFO L225 Difference]: With dead ends: 35595 [2022-11-23 03:02:53,277 INFO L226 Difference]: Without dead ends: 23177 [2022-11-23 03:02:53,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:02:53,339 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1906 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:53,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 918 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 03:02:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23177 states. [2022-11-23 03:03:05,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23177 to 21986. [2022-11-23 03:03:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21986 states, 17084 states have (on average 1.595527979395926) internal successors, (27258), 17656 states have internal predecessors, (27258), 3445 states have call successors, (3445), 1014 states have call predecessors, (3445), 1456 states have return successors, (6188), 3451 states have call predecessors, (6188), 3440 states have call successors, (6188) [2022-11-23 03:03:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21986 states to 21986 states and 36891 transitions. [2022-11-23 03:03:05,842 INFO L78 Accepts]: Start accepts. Automaton has 21986 states and 36891 transitions. Word has length 172 [2022-11-23 03:03:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:03:05,843 INFO L495 AbstractCegarLoop]: Abstraction has 21986 states and 36891 transitions. [2022-11-23 03:03:05,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 03:03:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 21986 states and 36891 transitions. [2022-11-23 03:03:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 03:03:05,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:03:05,848 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:05,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:03:06,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:06,053 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:03:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1101023965, now seen corresponding path program 1 times [2022-11-23 03:03:06,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:06,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737409587] [2022-11-23 03:03:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:06,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:03:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:03:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:03:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:03:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:03:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 03:03:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:03:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:03:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 03:03:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:03:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:03:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 03:03:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:03:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 03:03:07,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:07,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737409587] [2022-11-23 03:03:07,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737409587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:03:07,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890269623] [2022-11-23 03:03:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:07,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:07,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:03:07,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:03:07,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e30282e-04d9-494b-abf0-e00e8ce78e23/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:03:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:07,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 03:03:07,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:03:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:03:08,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:03:08,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890269623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:08,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:03:08,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-23 03:03:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898649675] [2022-11-23 03:03:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:03:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:03:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:03:08,067 INFO L87 Difference]: Start difference. First operand 21986 states and 36891 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19)