./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/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_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/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_78a67c3d-93cb-4a17-8304-86b04dd9ac20/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 a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece --- 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 02:19:02,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:19:02,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:19:02,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:19:02,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:19:02,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:19:02,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:19:02,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:19:02,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:19:02,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:19:02,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:19:02,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:19:02,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:19:02,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:19:02,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:19:02,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:19:02,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:19:02,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:19:02,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:19:02,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:19:02,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:19:02,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:19:02,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:19:02,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:19:02,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:19:02,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:19:02,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:19:02,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:19:02,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:19:02,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:19:02,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:19:02,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:19:02,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:19:02,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:19:02,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:19:02,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:19:02,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:19:02,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:19:02,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:19:02,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:19:02,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:19:02,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:19:02,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:19:02,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:19:02,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:19:02,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:19:02,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:19:02,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:19:02,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:19:02,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:19:02,126 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:19:02,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:19:02,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:19:02,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:19:02,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:19:02,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:19:02,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:19:02,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:19:02,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:19:02,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:19:02,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:19:02,129 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:19:02,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:19:02,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:19:02,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:19:02,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:19:02,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:19:02,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:19:02,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:19:02,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:19:02,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:19:02,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:19:02,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:19:02,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:19:02,133 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:19:02,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:19:02,134 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_78a67c3d-93cb-4a17-8304-86b04dd9ac20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece [2022-11-23 02:19:02,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:19:02,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:19:02,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:19:02,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:19:02,424 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:19:02,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2022-11-23 02:19:05,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:19:06,215 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:19:06,216 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2022-11-23 02:19:06,237 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/data/0ced08335/f4c2c4f69ba54781a8677eb525130554/FLAG88d2df58e [2022-11-23 02:19:06,254 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/data/0ced08335/f4c2c4f69ba54781a8677eb525130554 [2022-11-23 02:19:06,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:19:06,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:19:06,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:19:06,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:19:06,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:19:06,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:06" (1/1) ... [2022-11-23 02:19:06,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25593173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:06, skipping insertion in model container [2022-11-23 02:19:06,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:06" (1/1) ... [2022-11-23 02:19:06,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:19:06,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:19:06,518 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_78a67c3d-93cb-4a17-8304-86b04dd9ac20/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2022-11-23 02:19:06,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:19:07,010 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:19:07,025 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_78a67c3d-93cb-4a17-8304-86b04dd9ac20/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2022-11-23 02:19:07,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:19:07,184 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:19:07,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07 WrapperNode [2022-11-23 02:19:07,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:19:07,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:19:07,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:19:07,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:19:07,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,328 INFO L138 Inliner]: procedures = 88, calls = 329, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 743 [2022-11-23 02:19:07,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:19:07,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:19:07,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:19:07,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:19:07,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,438 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:19:07,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:19:07,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:19:07,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:19:07,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (1/1) ... [2022-11-23 02:19:07,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:19:07,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:07,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:19:07,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:19:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-23 02:19:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-23 02:19:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:19:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-23 02:19:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-23 02:19:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-23 02:19:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-23 02:19:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-23 02:19:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-23 02:19:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-23 02:19:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-23 02:19:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 02:19:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 02:19:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 02:19:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 02:19:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-23 02:19:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-23 02:19:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 02:19:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 02:19:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-23 02:19:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-23 02:19:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-23 02:19:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-23 02:19:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-23 02:19:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-23 02:19:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-23 02:19:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-23 02:19:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-23 02:19:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-23 02:19:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-23 02:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-23 02:19:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-23 02:19:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-23 02:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-23 02:19:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-23 02:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-23 02:19:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-23 02:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-23 02:19:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-23 02:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-23 02:19:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-23 02:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:19:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-23 02:19:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-23 02:19:07,785 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:19:07,788 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:19:09,176 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:19:09,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:19:09,205 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:19:09,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:09 BoogieIcfgContainer [2022-11-23 02:19:09,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:19:09,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:19:09,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:19:09,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:19:09,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:06" (1/3) ... [2022-11-23 02:19:09,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b778a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:09, skipping insertion in model container [2022-11-23 02:19:09,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:07" (2/3) ... [2022-11-23 02:19:09,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b778a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:09, skipping insertion in model container [2022-11-23 02:19:09,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:09" (3/3) ... [2022-11-23 02:19:09,233 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2022-11-23 02:19:09,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:19:09,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:19:09,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:19:09,366 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;@49f93d7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:19:09,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:19:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 412 states have (on average 1.7111650485436893) internal successors, (705), 433 states have internal predecessors, (705), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-23 02:19:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 02:19:09,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:09,415 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] [2022-11-23 02:19:09,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash 775009711, now seen corresponding path program 1 times [2022-11-23 02:19:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467501029] [2022-11-23 02:19:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:19:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 02:19:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:19:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:19:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:10,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467501029] [2022-11-23 02:19:10,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467501029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:10,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534895532] [2022-11-23 02:19:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:10,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:10,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:10,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:10,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:19:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:11,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 02:19:11,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:11,500 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 02:19:11,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:11,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534895532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:11,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:11,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-11-23 02:19:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552596955] [2022-11-23 02:19:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:11,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:19:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:19:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:19:11,569 INFO L87 Difference]: Start difference. First operand has 524 states, 412 states have (on average 1.7111650485436893) internal successors, (705), 433 states have internal predecessors, (705), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 02:19:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:11,672 INFO L93 Difference]: Finished difference Result 545 states and 913 transitions. [2022-11-23 02:19:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:19:11,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2022-11-23 02:19:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:11,719 INFO L225 Difference]: With dead ends: 545 [2022-11-23 02:19:11,719 INFO L226 Difference]: Without dead ends: 516 [2022-11-23 02:19:11,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:19:11,727 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:11,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-23 02:19:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-11-23 02:19:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 406 states have (on average 1.70935960591133) internal successors, (694), 425 states have internal predecessors, (694), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 02:19:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 867 transitions. [2022-11-23 02:19:11,829 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 867 transitions. Word has length 97 [2022-11-23 02:19:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:11,832 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 867 transitions. [2022-11-23 02:19:11,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 02:19:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 867 transitions. [2022-11-23 02:19:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 02:19:11,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:11,841 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] [2022-11-23 02:19:11,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:19:12,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 02:19:12,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1728523875, now seen corresponding path program 1 times [2022-11-23 02:19:12,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:12,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346448718] [2022-11-23 02:19:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:19:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 02:19:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:19:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:19:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:12,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346448718] [2022-11-23 02:19:12,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346448718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:12,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575954480] [2022-11-23 02:19:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:12,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:12,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:12,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:12,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:19:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:19:13,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:13,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575954480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:13,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:13,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:13,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669090761] [2022-11-23 02:19:13,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:13,394 INFO L87 Difference]: Start difference. First operand 516 states and 867 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:13,547 INFO L93 Difference]: Finished difference Result 1023 states and 1726 transitions. [2022-11-23 02:19:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-11-23 02:19:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:13,560 INFO L225 Difference]: With dead ends: 1023 [2022-11-23 02:19:13,561 INFO L226 Difference]: Without dead ends: 516 [2022-11-23 02:19:13,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:13,573 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 14 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:13,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2552 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-23 02:19:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-11-23 02:19:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 406 states have (on average 1.706896551724138) internal successors, (693), 425 states have internal predecessors, (693), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 02:19:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 866 transitions. [2022-11-23 02:19:13,650 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 866 transitions. Word has length 99 [2022-11-23 02:19:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:13,652 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 866 transitions. [2022-11-23 02:19:13,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 866 transitions. [2022-11-23 02:19:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 02:19:13,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:13,662 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] [2022-11-23 02:19:13,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:13,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:13,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -826883435, now seen corresponding path program 1 times [2022-11-23 02:19:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:13,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795041864] [2022-11-23 02:19:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:13,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:19:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 02:19:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795041864] [2022-11-23 02:19:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795041864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720510433] [2022-11-23 02:19:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:14,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:14,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:14,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:19:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:14,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:15,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:19:15,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:15,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720510433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:15,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:15,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448445931] [2022-11-23 02:19:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:15,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:15,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:15,053 INFO L87 Difference]: Start difference. First operand 516 states and 866 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:15,168 INFO L93 Difference]: Finished difference Result 1023 states and 1724 transitions. [2022-11-23 02:19:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:15,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-11-23 02:19:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:15,174 INFO L225 Difference]: With dead ends: 1023 [2022-11-23 02:19:15,174 INFO L226 Difference]: Without dead ends: 516 [2022-11-23 02:19:15,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:15,178 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 12 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2552 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-23 02:19:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-11-23 02:19:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 406 states have (on average 1.7044334975369457) internal successors, (692), 425 states have internal predecessors, (692), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 02:19:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 865 transitions. [2022-11-23 02:19:15,206 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 865 transitions. Word has length 101 [2022-11-23 02:19:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:15,207 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 865 transitions. [2022-11-23 02:19:15,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 865 transitions. [2022-11-23 02:19:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 02:19:15,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:15,211 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] [2022-11-23 02:19:15,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 02:19:15,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:15,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash 834246499, now seen corresponding path program 1 times [2022-11-23 02:19:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15511735] [2022-11-23 02:19:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:19:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-23 02:19:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:16,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15511735] [2022-11-23 02:19:16,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15511735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:16,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264908473] [2022-11-23 02:19:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:16,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:16,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:16,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:16,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:19:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:16,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:16,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:19:16,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:16,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264908473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:16,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:16,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216259125] [2022-11-23 02:19:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:16,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:16,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:16,782 INFO L87 Difference]: Start difference. First operand 516 states and 865 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:16,881 INFO L93 Difference]: Finished difference Result 1030 states and 1731 transitions. [2022-11-23 02:19:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-11-23 02:19:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:16,887 INFO L225 Difference]: With dead ends: 1030 [2022-11-23 02:19:16,900 INFO L226 Difference]: Without dead ends: 525 [2022-11-23 02:19:16,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:16,904 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 20 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:16,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2552 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-23 02:19:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-11-23 02:19:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 414 states have (on average 1.7004830917874396) internal successors, (704), 433 states have internal predecessors, (704), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 02:19:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2022-11-23 02:19:16,968 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 103 [2022-11-23 02:19:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:16,969 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2022-11-23 02:19:16,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2022-11-23 02:19:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 02:19:16,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:16,973 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] [2022-11-23 02:19:17,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 02:19:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:17,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1162426420, now seen corresponding path program 1 times [2022-11-23 02:19:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:17,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68943962] [2022-11-23 02:19:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:19:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:19:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-23 02:19:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:17,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:17,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68943962] [2022-11-23 02:19:17,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68943962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:17,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612448414] [2022-11-23 02:19:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:17,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:17,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:17,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:17,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:19:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:18,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:19:18,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:18,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612448414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:18,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:18,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:18,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233562379] [2022-11-23 02:19:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:18,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:18,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:18,379 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:18,477 INFO L93 Difference]: Finished difference Result 1032 states and 1732 transitions. [2022-11-23 02:19:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-23 02:19:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:18,484 INFO L225 Difference]: With dead ends: 1032 [2022-11-23 02:19:18,484 INFO L226 Difference]: Without dead ends: 525 [2022-11-23 02:19:18,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:18,492 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 18 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2552 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-23 02:19:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-11-23 02:19:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 414 states have (on average 1.6980676328502415) internal successors, (703), 433 states have internal predecessors, (703), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 02:19:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 876 transitions. [2022-11-23 02:19:18,539 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 876 transitions. Word has length 104 [2022-11-23 02:19:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:18,540 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 876 transitions. [2022-11-23 02:19:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 876 transitions. [2022-11-23 02:19:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 02:19:18,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:18,546 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] [2022-11-23 02:19:18,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:18,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash -176244601, now seen corresponding path program 1 times [2022-11-23 02:19:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:18,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108278799] [2022-11-23 02:19:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 02:19:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:19:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:19,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:19,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108278799] [2022-11-23 02:19:19,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108278799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:19,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314628056] [2022-11-23 02:19:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:19,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:19,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:19,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:19,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:19:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:19,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:19:19,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:19,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314628056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:19,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:19,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220170990] [2022-11-23 02:19:19,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:19,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:19,898 INFO L87 Difference]: Start difference. First operand 525 states and 876 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:19,985 INFO L93 Difference]: Finished difference Result 1032 states and 1731 transitions. [2022-11-23 02:19:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-11-23 02:19:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:19,991 INFO L225 Difference]: With dead ends: 1032 [2022-11-23 02:19:19,992 INFO L226 Difference]: Without dead ends: 525 [2022-11-23 02:19:19,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:19,997 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 17 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2552 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-23 02:19:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-11-23 02:19:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 414 states have (on average 1.6956521739130435) internal successors, (702), 433 states have internal predecessors, (702), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 02:19:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 875 transitions. [2022-11-23 02:19:20,027 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 875 transitions. Word has length 105 [2022-11-23 02:19:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:20,027 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 875 transitions. [2022-11-23 02:19:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 875 transitions. [2022-11-23 02:19:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 02:19:20,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:20,032 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] [2022-11-23 02:19:20,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:20,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:20,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:20,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1210846416, now seen corresponding path program 1 times [2022-11-23 02:19:20,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:20,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839080438] [2022-11-23 02:19:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:20,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:19:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:19:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:19:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:21,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839080438] [2022-11-23 02:19:21,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839080438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:21,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471888238] [2022-11-23 02:19:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:21,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:21,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:21,151 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:21,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:19:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:21,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:19:21,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:21,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:21,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471888238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:21,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:21,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-23 02:19:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917919698] [2022-11-23 02:19:21,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:21,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:19:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:21,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:19:21,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:19:21,717 INFO L87 Difference]: Start difference. First operand 525 states and 875 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:21,880 INFO L93 Difference]: Finished difference Result 1051 states and 1761 transitions. [2022-11-23 02:19:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:19:21,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-11-23 02:19:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:21,886 INFO L225 Difference]: With dead ends: 1051 [2022-11-23 02:19:21,887 INFO L226 Difference]: Without dead ends: 548 [2022-11-23 02:19:21,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:19:21,891 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 148 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5011 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:21,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5011 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-23 02:19:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-11-23 02:19:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 430 states have (on average 1.6930232558139535) internal successors, (728), 451 states have internal predecessors, (728), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2022-11-23 02:19:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 906 transitions. [2022-11-23 02:19:21,920 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 906 transitions. Word has length 106 [2022-11-23 02:19:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:21,921 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 906 transitions. [2022-11-23 02:19:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 906 transitions. [2022-11-23 02:19:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 02:19:21,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:21,926 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] [2022-11-23 02:19:21,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:22,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:22,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1596213199, now seen corresponding path program 1 times [2022-11-23 02:19:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:22,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409246817] [2022-11-23 02:19:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:19:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:19:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:19:22,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:22,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409246817] [2022-11-23 02:19:22,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409246817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:22,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330586811] [2022-11-23 02:19:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:22,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:22,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:22,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:19:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:23,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:23,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:23,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330586811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:23,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:23,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780190032] [2022-11-23 02:19:23,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:23,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:23,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:23,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:23,247 INFO L87 Difference]: Start difference. First operand 544 states and 906 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:23,447 INFO L93 Difference]: Finished difference Result 1092 states and 1835 transitions. [2022-11-23 02:19:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2022-11-23 02:19:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:23,454 INFO L225 Difference]: With dead ends: 1092 [2022-11-23 02:19:23,455 INFO L226 Difference]: Without dead ends: 544 [2022-11-23 02:19:23,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:23,460 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 135 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2369 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-23 02:19:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2022-11-23 02:19:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 430 states have (on average 1.6813953488372093) internal successors, (723), 451 states have internal predecessors, (723), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2022-11-23 02:19:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 901 transitions. [2022-11-23 02:19:23,491 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 901 transitions. Word has length 106 [2022-11-23 02:19:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:23,491 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 901 transitions. [2022-11-23 02:19:23,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 901 transitions. [2022-11-23 02:19:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-23 02:19:23,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:23,496 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] [2022-11-23 02:19:23,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:23,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 02:19:23,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1554473517, now seen corresponding path program 1 times [2022-11-23 02:19:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:23,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138134951] [2022-11-23 02:19:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:23,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 02:19:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 02:19:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:19:24,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:24,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138134951] [2022-11-23 02:19:24,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138134951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:24,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675662766] [2022-11-23 02:19:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:24,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:24,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:19:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:24,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:24,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:24,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675662766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:24,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:24,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:24,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260568975] [2022-11-23 02:19:24,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:24,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:24,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:24,848 INFO L87 Difference]: Start difference. First operand 544 states and 901 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:25,020 INFO L93 Difference]: Finished difference Result 1092 states and 1825 transitions. [2022-11-23 02:19:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2022-11-23 02:19:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:25,030 INFO L225 Difference]: With dead ends: 1092 [2022-11-23 02:19:25,030 INFO L226 Difference]: Without dead ends: 544 [2022-11-23 02:19:25,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:25,036 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 129 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:25,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2369 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-23 02:19:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2022-11-23 02:19:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 430 states have (on average 1.669767441860465) internal successors, (718), 451 states have internal predecessors, (718), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2022-11-23 02:19:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 896 transitions. [2022-11-23 02:19:25,066 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 896 transitions. Word has length 108 [2022-11-23 02:19:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:25,066 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 896 transitions. [2022-11-23 02:19:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 896 transitions. [2022-11-23 02:19:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 02:19:25,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:25,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:25,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:25,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -747741871, now seen corresponding path program 1 times [2022-11-23 02:19:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:25,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182325172] [2022-11-23 02:19:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:19:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:19:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:19:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182325172] [2022-11-23 02:19:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182325172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048109885] [2022-11-23 02:19:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:25,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:25,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:25,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 02:19:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:26,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:26,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:26,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048109885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:26,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:26,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759810531] [2022-11-23 02:19:26,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:26,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:26,324 INFO L87 Difference]: Start difference. First operand 544 states and 896 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:26,514 INFO L93 Difference]: Finished difference Result 1128 states and 1873 transitions. [2022-11-23 02:19:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-11-23 02:19:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:26,520 INFO L225 Difference]: With dead ends: 1128 [2022-11-23 02:19:26,520 INFO L226 Difference]: Without dead ends: 610 [2022-11-23 02:19:26,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:26,524 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 179 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:26,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2379 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-23 02:19:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 595. [2022-11-23 02:19:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 480 states have (on average 1.6729166666666666) internal successors, (803), 501 states have internal predecessors, (803), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2022-11-23 02:19:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2022-11-23 02:19:26,582 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 110 [2022-11-23 02:19:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:26,583 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2022-11-23 02:19:26,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2022-11-23 02:19:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 02:19:26,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:26,587 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] [2022-11-23 02:19:26,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:26,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 02:19:26,796 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1074440038, now seen corresponding path program 1 times [2022-11-23 02:19:26,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:26,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003283624] [2022-11-23 02:19:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 02:19:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:19:27,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:27,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003283624] [2022-11-23 02:19:27,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003283624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:27,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316362682] [2022-11-23 02:19:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:27,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:27,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:27,534 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:27,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 02:19:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:19:27,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:28,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:28,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316362682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:28,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:28,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-23 02:19:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104069689] [2022-11-23 02:19:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:19:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:28,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:19:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:19:28,071 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:28,363 INFO L93 Difference]: Finished difference Result 1120 states and 1853 transitions. [2022-11-23 02:19:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:19:28,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-11-23 02:19:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:28,370 INFO L225 Difference]: With dead ends: 1120 [2022-11-23 02:19:28,370 INFO L226 Difference]: Without dead ends: 617 [2022-11-23 02:19:28,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:19:28,374 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 177 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5731 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:28,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5731 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-23 02:19:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 595. [2022-11-23 02:19:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 480 states have (on average 1.6729166666666666) internal successors, (803), 501 states have internal predecessors, (803), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2022-11-23 02:19:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2022-11-23 02:19:28,422 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 111 [2022-11-23 02:19:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:28,423 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2022-11-23 02:19:28,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2022-11-23 02:19:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 02:19:28,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:28,430 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] [2022-11-23 02:19:28,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-23 02:19:28,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 02:19:28,639 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 264952581, now seen corresponding path program 1 times [2022-11-23 02:19:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:28,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243485070] [2022-11-23 02:19:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:28,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 02:19:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:19:29,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:29,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243485070] [2022-11-23 02:19:29,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243485070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:29,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222010907] [2022-11-23 02:19:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:29,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:29,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:29,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:29,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 02:19:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:29,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:19:29,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:19:29,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:29,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222010907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:29,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:29,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-23 02:19:29,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209842005] [2022-11-23 02:19:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:19:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:19:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:19:29,939 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:30,075 INFO L93 Difference]: Finished difference Result 1055 states and 1750 transitions. [2022-11-23 02:19:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:19:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-11-23 02:19:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:30,082 INFO L225 Difference]: With dead ends: 1055 [2022-11-23 02:19:30,082 INFO L226 Difference]: Without dead ends: 619 [2022-11-23 02:19:30,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:19:30,088 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 134 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:30,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 4970 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:30,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-23 02:19:30,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 614. [2022-11-23 02:19:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6713709677419355) internal successors, (829), 519 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1010 transitions. [2022-11-23 02:19:30,118 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1010 transitions. Word has length 111 [2022-11-23 02:19:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:30,118 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1010 transitions. [2022-11-23 02:19:30,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1010 transitions. [2022-11-23 02:19:30,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 02:19:30,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:30,123 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] [2022-11-23 02:19:30,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:30,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 02:19:30,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1444130015, now seen corresponding path program 1 times [2022-11-23 02:19:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:30,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056738370] [2022-11-23 02:19:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:19:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:30,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:19:31,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:31,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056738370] [2022-11-23 02:19:31,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056738370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:31,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838759512] [2022-11-23 02:19:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:31,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:31,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:31,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:31,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 02:19:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:19:31,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:19:31,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:31,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838759512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:31,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:31,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-23 02:19:31,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293975505] [2022-11-23 02:19:31,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:31,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:19:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:19:31,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:19:31,554 INFO L87 Difference]: Start difference. First operand 614 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:31,700 INFO L93 Difference]: Finished difference Result 1085 states and 1801 transitions. [2022-11-23 02:19:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:19:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-23 02:19:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:31,707 INFO L225 Difference]: With dead ends: 1085 [2022-11-23 02:19:31,707 INFO L226 Difference]: Without dead ends: 649 [2022-11-23 02:19:31,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:19:31,712 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 143 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:31,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 4960 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-11-23 02:19:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 614. [2022-11-23 02:19:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6713709677419355) internal successors, (829), 519 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1010 transitions. [2022-11-23 02:19:31,743 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1010 transitions. Word has length 112 [2022-11-23 02:19:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:31,744 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1010 transitions. [2022-11-23 02:19:31,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1010 transitions. [2022-11-23 02:19:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 02:19:31,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:31,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:31,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:31,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1512634017, now seen corresponding path program 1 times [2022-11-23 02:19:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:31,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525244968] [2022-11-23 02:19:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:19:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:19:32,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:32,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525244968] [2022-11-23 02:19:32,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525244968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:32,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102197717] [2022-11-23 02:19:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:32,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:32,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:32,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 02:19:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:32,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:19:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:19:33,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:33,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102197717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:33,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:33,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-23 02:19:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047987886] [2022-11-23 02:19:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:33,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:19:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:19:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:19:33,114 INFO L87 Difference]: Start difference. First operand 614 states and 1010 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:33,319 INFO L93 Difference]: Finished difference Result 1070 states and 1775 transitions. [2022-11-23 02:19:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:19:33,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-23 02:19:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:33,325 INFO L225 Difference]: With dead ends: 1070 [2022-11-23 02:19:33,326 INFO L226 Difference]: Without dead ends: 634 [2022-11-23 02:19:33,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:19:33,330 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 177 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5739 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:33,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5739 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-23 02:19:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 614. [2022-11-23 02:19:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6713709677419355) internal successors, (829), 519 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1010 transitions. [2022-11-23 02:19:33,361 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1010 transitions. Word has length 112 [2022-11-23 02:19:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:33,362 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1010 transitions. [2022-11-23 02:19:33,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1010 transitions. [2022-11-23 02:19:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 02:19:33,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:33,367 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] [2022-11-23 02:19:33,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:33,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 02:19:33,576 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1594958174, now seen corresponding path program 1 times [2022-11-23 02:19:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678172360] [2022-11-23 02:19:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:33,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:19:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:19:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 02:19:34,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:34,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678172360] [2022-11-23 02:19:34,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678172360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:34,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362529405] [2022-11-23 02:19:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:34,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:34,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:34,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 02:19:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:34,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:19:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:19:34,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:34,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362529405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:34,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:34,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102721841] [2022-11-23 02:19:34,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:34,704 INFO L87 Difference]: Start difference. First operand 614 states and 1010 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:34,779 INFO L93 Difference]: Finished difference Result 1122 states and 1860 transitions. [2022-11-23 02:19:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-23 02:19:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:34,785 INFO L225 Difference]: With dead ends: 1122 [2022-11-23 02:19:34,785 INFO L226 Difference]: Without dead ends: 614 [2022-11-23 02:19:34,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:34,790 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 23 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:34,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2521 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-11-23 02:19:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-11-23 02:19:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6633064516129032) internal successors, (825), 519 states have internal predecessors, (825), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1006 transitions. [2022-11-23 02:19:34,819 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1006 transitions. Word has length 112 [2022-11-23 02:19:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:34,819 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1006 transitions. [2022-11-23 02:19:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1006 transitions. [2022-11-23 02:19:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 02:19:34,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:34,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:34,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:35,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 02:19:35,033 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1896184669, now seen corresponding path program 1 times [2022-11-23 02:19:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:35,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486681456] [2022-11-23 02:19:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:19:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:19:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486681456] [2022-11-23 02:19:35,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486681456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707564899] [2022-11-23 02:19:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:35,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:35,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:35,606 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:35,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 02:19:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:35,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:19:35,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:19:36,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:36,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707564899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:36,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:36,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-23 02:19:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769599595] [2022-11-23 02:19:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:19:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:36,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:19:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:19:36,128 INFO L87 Difference]: Start difference. First operand 614 states and 1006 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:36,332 INFO L93 Difference]: Finished difference Result 1070 states and 1772 transitions. [2022-11-23 02:19:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:19:36,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2022-11-23 02:19:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:36,339 INFO L225 Difference]: With dead ends: 1070 [2022-11-23 02:19:36,339 INFO L226 Difference]: Without dead ends: 634 [2022-11-23 02:19:36,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:19:36,343 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 185 mSDsluCounter, 4866 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5696 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:36,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5696 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:36,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-23 02:19:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 614. [2022-11-23 02:19:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6633064516129032) internal successors, (825), 519 states have internal predecessors, (825), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1006 transitions. [2022-11-23 02:19:36,372 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1006 transitions. Word has length 113 [2022-11-23 02:19:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:36,372 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1006 transitions. [2022-11-23 02:19:36,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1006 transitions. [2022-11-23 02:19:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 02:19:36,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:36,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:36,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:36,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 02:19:36,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -632622236, now seen corresponding path program 1 times [2022-11-23 02:19:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:36,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43110760] [2022-11-23 02:19:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:19:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:19:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:37,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43110760] [2022-11-23 02:19:37,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43110760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:37,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207652744] [2022-11-23 02:19:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:37,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:37,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:37,266 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:37,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 02:19:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:37,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:19:37,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:19:37,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:37,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207652744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:37,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974855624] [2022-11-23 02:19:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:37,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:37,715 INFO L87 Difference]: Start difference. First operand 614 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:37,796 INFO L93 Difference]: Finished difference Result 1178 states and 1942 transitions. [2022-11-23 02:19:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:37,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-11-23 02:19:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:37,802 INFO L225 Difference]: With dead ends: 1178 [2022-11-23 02:19:37,802 INFO L226 Difference]: Without dead ends: 650 [2022-11-23 02:19:37,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:37,806 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 38 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:37,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2497 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-23 02:19:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 638. [2022-11-23 02:19:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 520 states have (on average 1.6403846153846153) internal successors, (853), 543 states have internal predecessors, (853), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1034 transitions. [2022-11-23 02:19:37,838 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1034 transitions. Word has length 114 [2022-11-23 02:19:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:37,838 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1034 transitions. [2022-11-23 02:19:37,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1034 transitions. [2022-11-23 02:19:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 02:19:37,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:37,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:37,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:38,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:19:38,053 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash -729426023, now seen corresponding path program 1 times [2022-11-23 02:19:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:38,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156276595] [2022-11-23 02:19:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:19:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 02:19:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:19:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156276595] [2022-11-23 02:19:38,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156276595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759147878] [2022-11-23 02:19:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:38,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:38,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:38,653 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:38,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 02:19:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:19:39,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:19:39,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:39,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759147878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:39,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:39,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:39,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198168245] [2022-11-23 02:19:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:39,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:39,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:39,146 INFO L87 Difference]: Start difference. First operand 638 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:39,353 INFO L93 Difference]: Finished difference Result 1188 states and 1971 transitions. [2022-11-23 02:19:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-11-23 02:19:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:39,360 INFO L225 Difference]: With dead ends: 1188 [2022-11-23 02:19:39,361 INFO L226 Difference]: Without dead ends: 757 [2022-11-23 02:19:39,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:39,365 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 215 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:39,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2674 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-23 02:19:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 640. [2022-11-23 02:19:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 522 states have (on average 1.6379310344827587) internal successors, (855), 545 states have internal predecessors, (855), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-11-23 02:19:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1036 transitions. [2022-11-23 02:19:39,401 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1036 transitions. Word has length 114 [2022-11-23 02:19:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:39,401 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1036 transitions. [2022-11-23 02:19:39,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1036 transitions. [2022-11-23 02:19:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 02:19:39,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:39,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:39,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:39,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 02:19:39,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 339157456, now seen corresponding path program 1 times [2022-11-23 02:19:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:39,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729075063] [2022-11-23 02:19:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:39,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:19:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:19:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:19:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729075063] [2022-11-23 02:19:40,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729075063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916479466] [2022-11-23 02:19:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:40,222 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:40,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 02:19:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:40,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:19:40,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 02:19:40,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:40,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916479466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:40,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:40,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-11-23 02:19:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855319487] [2022-11-23 02:19:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:40,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:19:40,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:19:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:40,962 INFO L87 Difference]: Start difference. First operand 640 states and 1036 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-23 02:19:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:45,915 INFO L93 Difference]: Finished difference Result 1892 states and 3174 transitions. [2022-11-23 02:19:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:19:45,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2022-11-23 02:19:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:45,929 INFO L225 Difference]: With dead ends: 1892 [2022-11-23 02:19:45,929 INFO L226 Difference]: Without dead ends: 1459 [2022-11-23 02:19:45,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:19:45,935 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 3122 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 5492 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 6333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 5492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:45,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3239 Valid, 4342 Invalid, 6333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [841 Valid, 5492 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 02:19:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-11-23 02:19:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1294. [2022-11-23 02:19:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1024 states have (on average 1.63671875) internal successors, (1676), 1071 states have internal predecessors, (1676), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2022-11-23 02:19:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 2137 transitions. [2022-11-23 02:19:46,023 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 2137 transitions. Word has length 117 [2022-11-23 02:19:46,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:46,023 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 2137 transitions. [2022-11-23 02:19:46,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-23 02:19:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 2137 transitions. [2022-11-23 02:19:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 02:19:46,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:46,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:46,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:46,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:46,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:46,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1318929787, now seen corresponding path program 1 times [2022-11-23 02:19:46,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:46,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668324289] [2022-11-23 02:19:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:19:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 02:19:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 02:19:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:19:46,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:46,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668324289] [2022-11-23 02:19:46,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668324289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:46,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40117106] [2022-11-23 02:19:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:46,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:46,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:46,891 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:46,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 02:19:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:47,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:19:47,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:19:47,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:47,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40117106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:47,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:47,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-23 02:19:47,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176532779] [2022-11-23 02:19:47,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:47,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:19:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:19:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:47,385 INFO L87 Difference]: Start difference. First operand 1294 states and 2137 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:47,989 INFO L93 Difference]: Finished difference Result 3197 states and 5413 transitions. [2022-11-23 02:19:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:19:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2022-11-23 02:19:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:48,009 INFO L225 Difference]: With dead ends: 3197 [2022-11-23 02:19:48,009 INFO L226 Difference]: Without dead ends: 2222 [2022-11-23 02:19:48,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:48,019 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 699 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:48,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 4595 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:19:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-11-23 02:19:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2203. [2022-11-23 02:19:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1715 states have (on average 1.643731778425656) internal successors, (2819), 1796 states have internal predecessors, (2819), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2022-11-23 02:19:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3676 transitions. [2022-11-23 02:19:48,159 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3676 transitions. Word has length 118 [2022-11-23 02:19:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:48,160 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3676 transitions. [2022-11-23 02:19:48,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3676 transitions. [2022-11-23 02:19:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-23 02:19:48,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:48,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:48,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:48,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:48,381 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash -777924206, now seen corresponding path program 1 times [2022-11-23 02:19:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:48,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273714928] [2022-11-23 02:19:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:19:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:19:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:19:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:19:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 02:19:49,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:49,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273714928] [2022-11-23 02:19:49,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273714928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:49,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416636920] [2022-11-23 02:19:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:49,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:49,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:49,192 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:49,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 02:19:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:49,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:19:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:19:49,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:49,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416636920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:49,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:49,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-23 02:19:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380545833] [2022-11-23 02:19:49,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:19:49,631 INFO L87 Difference]: Start difference. First operand 2203 states and 3676 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:49,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:49,800 INFO L93 Difference]: Finished difference Result 4262 states and 7149 transitions. [2022-11-23 02:19:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:19:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 120 [2022-11-23 02:19:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:49,820 INFO L225 Difference]: With dead ends: 4262 [2022-11-23 02:19:49,820 INFO L226 Difference]: Without dead ends: 2257 [2022-11-23 02:19:49,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:19:49,834 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 39 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:49,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2494 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-23 02:19:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2224. [2022-11-23 02:19:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1735 states have (on average 1.6432276657060518) internal successors, (2851), 1817 states have internal predecessors, (2851), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-11-23 02:19:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3709 transitions. [2022-11-23 02:19:49,969 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3709 transitions. Word has length 120 [2022-11-23 02:19:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:49,969 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3709 transitions. [2022-11-23 02:19:49,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 02:19:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3709 transitions. [2022-11-23 02:19:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 02:19:49,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:49,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:49,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:50,190 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -791330583, now seen corresponding path program 1 times [2022-11-23 02:19:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:50,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174837263] [2022-11-23 02:19:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:19:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:19:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:19:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:19:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 02:19:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174837263] [2022-11-23 02:19:51,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174837263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235870320] [2022-11-23 02:19:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:51,005 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:51,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 02:19:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:51,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 02:19:51,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:19:51,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:51,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235870320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:51,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:51,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-23 02:19:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248139383] [2022-11-23 02:19:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:51,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:19:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:19:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:19:51,599 INFO L87 Difference]: Start difference. First operand 2224 states and 3709 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:51,883 INFO L93 Difference]: Finished difference Result 4192 states and 7029 transitions. [2022-11-23 02:19:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:19:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2022-11-23 02:19:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:51,903 INFO L225 Difference]: With dead ends: 4192 [2022-11-23 02:19:51,904 INFO L226 Difference]: Without dead ends: 2297 [2022-11-23 02:19:51,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:19:51,919 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 175 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:51,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 5706 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-11-23 02:19:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2224. [2022-11-23 02:19:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1735 states have (on average 1.6426512968299711) internal successors, (2850), 1817 states have internal predecessors, (2850), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-11-23 02:19:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3708 transitions. [2022-11-23 02:19:52,044 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3708 transitions. Word has length 121 [2022-11-23 02:19:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:52,044 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3708 transitions. [2022-11-23 02:19:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 02:19:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3708 transitions. [2022-11-23 02:19:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 02:19:52,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:52,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:52,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:52,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:52,267 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:52,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:52,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1370093547, now seen corresponding path program 1 times [2022-11-23 02:19:52,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161460910] [2022-11-23 02:19:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:52,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:19:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:19:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:19:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:19:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:19:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161460910] [2022-11-23 02:19:53,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161460910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113328011] [2022-11-23 02:19:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:53,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:53,049 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:53,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 02:19:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:53,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:19:53,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:53,768 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 02:19:53,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:53,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113328011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:53,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:53,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-11-23 02:19:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716688855] [2022-11-23 02:19:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:19:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:19:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:19:53,771 INFO L87 Difference]: Start difference. First operand 2224 states and 3708 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 02:19:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:54,290 INFO L93 Difference]: Finished difference Result 2437 states and 4062 transitions. [2022-11-23 02:19:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:54,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 121 [2022-11-23 02:19:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:54,311 INFO L225 Difference]: With dead ends: 2437 [2022-11-23 02:19:54,311 INFO L226 Difference]: Without dead ends: 2420 [2022-11-23 02:19:54,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:19:54,314 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 831 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:54,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1524 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:19:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-11-23 02:19:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2242. [2022-11-23 02:19:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1753 states have (on average 1.6360524814603536) internal successors, (2868), 1835 states have internal predecessors, (2868), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-11-23 02:19:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3726 transitions. [2022-11-23 02:19:54,457 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3726 transitions. Word has length 121 [2022-11-23 02:19:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:54,457 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 3726 transitions. [2022-11-23 02:19:54,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 02:19:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3726 transitions. [2022-11-23 02:19:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 02:19:54,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:54,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:54,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 02:19:54,678 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash -798145562, now seen corresponding path program 1 times [2022-11-23 02:19:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:54,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512031053] [2022-11-23 02:19:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:19:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:19:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:19:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:19:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:19:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:19:55,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512031053] [2022-11-23 02:19:55,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512031053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570918222] [2022-11-23 02:19:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:55,400 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:55,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 02:19:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:55,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:19:55,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:55,812 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 02:19:55,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:55,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570918222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:55,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:55,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-23 02:19:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928580250] [2022-11-23 02:19:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:55,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:19:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:19:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:19:55,816 INFO L87 Difference]: Start difference. First operand 2242 states and 3726 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-23 02:19:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:55,917 INFO L93 Difference]: Finished difference Result 2271 states and 3764 transitions. [2022-11-23 02:19:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:19:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2022-11-23 02:19:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:55,944 INFO L225 Difference]: With dead ends: 2271 [2022-11-23 02:19:55,944 INFO L226 Difference]: Without dead ends: 2254 [2022-11-23 02:19:55,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:19:55,947 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 37 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:55,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3370 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-23 02:19:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2242. [2022-11-23 02:19:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1753 states have (on average 1.6326297775242442) internal successors, (2862), 1835 states have internal predecessors, (2862), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-11-23 02:19:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3720 transitions. [2022-11-23 02:19:56,079 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3720 transitions. Word has length 127 [2022-11-23 02:19:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:56,079 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 3720 transitions. [2022-11-23 02:19:56,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-23 02:19:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3720 transitions. [2022-11-23 02:19:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 02:19:56,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:56,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:56,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:56,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-23 02:19:56,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1519715146, now seen corresponding path program 1 times [2022-11-23 02:19:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:56,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235781414] [2022-11-23 02:19:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:56,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:19:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:19:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:19:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:19:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:19:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:19:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 02:19:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 02:19:57,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:57,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235781414] [2022-11-23 02:19:57,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235781414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:57,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826462589] [2022-11-23 02:19:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:57,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:57,112 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:57,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 02:19:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:57,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:19:57,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:19:57,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:57,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826462589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:57,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:57,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2022-11-23 02:19:57,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345807685] [2022-11-23 02:19:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:57,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:19:57,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:19:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:57,632 INFO L87 Difference]: Start difference. First operand 2242 states and 3720 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:19:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:57,863 INFO L93 Difference]: Finished difference Result 4342 states and 7231 transitions. [2022-11-23 02:19:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:19:57,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2022-11-23 02:19:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:57,883 INFO L225 Difference]: With dead ends: 4342 [2022-11-23 02:19:57,884 INFO L226 Difference]: Without dead ends: 2325 [2022-11-23 02:19:57,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:19:57,898 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 167 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:57,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 4912 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:19:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2022-11-23 02:19:58,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2242. [2022-11-23 02:19:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1753 states have (on average 1.6326297775242442) internal successors, (2862), 1835 states have internal predecessors, (2862), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-11-23 02:19:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3720 transitions. [2022-11-23 02:19:58,038 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3720 transitions. Word has length 138 [2022-11-23 02:19:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:58,039 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 3720 transitions. [2022-11-23 02:19:58,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:19:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3720 transitions. [2022-11-23 02:19:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 02:19:58,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:58,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:58,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 02:19:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 02:19:58,263 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:19:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1823731078, now seen corresponding path program 1 times [2022-11-23 02:19:58,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:58,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697723496] [2022-11-23 02:19:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:19:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:19:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:19:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:19:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:19:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:19:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:19:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-23 02:19:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:19:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 02:19:58,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:58,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697723496] [2022-11-23 02:19:58,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697723496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:19:58,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562042695] [2022-11-23 02:19:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:58,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:19:58,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:58,868 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:19:58,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 02:19:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:59,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:19:59,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:19:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:19:59,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:19:59,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562042695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:59,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:19:59,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:19:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985330540] [2022-11-23 02:19:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:59,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:19:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:19:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:19:59,361 INFO L87 Difference]: Start difference. First operand 2242 states and 3720 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:19:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:19:59,567 INFO L93 Difference]: Finished difference Result 4346 states and 7242 transitions. [2022-11-23 02:19:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:19:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-11-23 02:19:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:19:59,588 INFO L225 Difference]: With dead ends: 4346 [2022-11-23 02:19:59,588 INFO L226 Difference]: Without dead ends: 2072 [2022-11-23 02:19:59,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:19:59,602 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 11 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:19:59,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2520 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:19:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-23 02:19:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-23 02:19:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.6376720901126407) internal successors, (2617), 1674 states have internal predecessors, (2617), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-11-23 02:19:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3456 transitions. [2022-11-23 02:19:59,777 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3456 transitions. Word has length 138 [2022-11-23 02:19:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:19:59,778 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3456 transitions. [2022-11-23 02:19:59,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:19:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3456 transitions. [2022-11-23 02:19:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-23 02:19:59,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:19:59,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:59,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:00,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 02:20:00,004 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 641853903, now seen corresponding path program 1 times [2022-11-23 02:20:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:00,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115322652] [2022-11-23 02:20:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:20:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:20:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:20:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:20:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 02:20:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:20:00,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:00,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115322652] [2022-11-23 02:20:00,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115322652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:00,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164752047] [2022-11-23 02:20:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:00,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:00,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:00,655 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:00,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-23 02:20:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:01,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:20:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:20:01,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:01,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164752047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:01,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:01,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:20:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711646982] [2022-11-23 02:20:01,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:20:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:20:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:20:01,104 INFO L87 Difference]: Start difference. First operand 2072 states and 3456 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:01,321 INFO L93 Difference]: Finished difference Result 4113 states and 6877 transitions. [2022-11-23 02:20:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:20:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 139 [2022-11-23 02:20:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:01,345 INFO L225 Difference]: With dead ends: 4113 [2022-11-23 02:20:01,345 INFO L226 Difference]: Without dead ends: 2072 [2022-11-23 02:20:01,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:20:01,356 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 177 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:01,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2353 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-23 02:20:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-23 02:20:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.637046307884856) internal successors, (2616), 1674 states have internal predecessors, (2616), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-11-23 02:20:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3455 transitions. [2022-11-23 02:20:01,479 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3455 transitions. Word has length 139 [2022-11-23 02:20:01,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:01,481 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3455 transitions. [2022-11-23 02:20:01,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:01,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3455 transitions. [2022-11-23 02:20:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 02:20:01,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:01,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:01,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:01,705 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1043081883, now seen corresponding path program 1 times [2022-11-23 02:20:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:01,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445900764] [2022-11-23 02:20:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-23 02:20:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 02:20:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:20:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:20:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 02:20:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:20:02,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:02,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445900764] [2022-11-23 02:20:02,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445900764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:02,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802885533] [2022-11-23 02:20:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:02,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:02,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:02,367 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:02,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-23 02:20:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:02,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:20:02,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:20:02,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:02,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802885533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:02,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:02,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 02:20:02,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980688213] [2022-11-23 02:20:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:02,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:20:02,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:02,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:20:02,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:20:02,806 INFO L87 Difference]: Start difference. First operand 2072 states and 3455 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:02,998 INFO L93 Difference]: Finished difference Result 4113 states and 6876 transitions. [2022-11-23 02:20:02,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:20:02,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2022-11-23 02:20:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:03,015 INFO L225 Difference]: With dead ends: 4113 [2022-11-23 02:20:03,015 INFO L226 Difference]: Without dead ends: 2072 [2022-11-23 02:20:03,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:20:03,026 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 176 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:03,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2353 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:03,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-23 02:20:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-23 02:20:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.6364205256570714) internal successors, (2615), 1674 states have internal predecessors, (2615), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-11-23 02:20:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3454 transitions. [2022-11-23 02:20:03,143 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3454 transitions. Word has length 140 [2022-11-23 02:20:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:03,144 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3454 transitions. [2022-11-23 02:20:03,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3454 transitions. [2022-11-23 02:20:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 02:20:03,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:03,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:03,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-23 02:20:03,363 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash -874555626, now seen corresponding path program 1 times [2022-11-23 02:20:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:03,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298803795] [2022-11-23 02:20:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 02:20:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:20:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:20:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 02:20:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:20:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298803795] [2022-11-23 02:20:03,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298803795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145217257] [2022-11-23 02:20:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:03,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:03,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:03,946 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:03,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-23 02:20:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:04,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:20:04,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:20:04,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:04,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145217257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:04,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:04,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-23 02:20:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395070660] [2022-11-23 02:20:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:04,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:20:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:20:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:20:04,446 INFO L87 Difference]: Start difference. First operand 2072 states and 3454 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:04,659 INFO L93 Difference]: Finished difference Result 4113 states and 6881 transitions. [2022-11-23 02:20:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:20:04,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 141 [2022-11-23 02:20:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:04,671 INFO L225 Difference]: With dead ends: 4113 [2022-11-23 02:20:04,671 INFO L226 Difference]: Without dead ends: 2072 [2022-11-23 02:20:04,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:20:04,680 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 166 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:04,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2353 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-23 02:20:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-23 02:20:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.6326658322903629) internal successors, (2609), 1674 states have internal predecessors, (2609), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-11-23 02:20:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3448 transitions. [2022-11-23 02:20:04,809 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3448 transitions. Word has length 141 [2022-11-23 02:20:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:04,809 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3448 transitions. [2022-11-23 02:20:04,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3448 transitions. [2022-11-23 02:20:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 02:20:04,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:04,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:04,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-23 02:20:05,030 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:05,030 INFO L85 PathProgramCache]: Analyzing trace with hash 772807316, now seen corresponding path program 1 times [2022-11-23 02:20:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:05,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896140264] [2022-11-23 02:20:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:05,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 02:20:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:20:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:20:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 02:20:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:20:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896140264] [2022-11-23 02:20:05,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896140264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:05,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:05,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 02:20:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360769137] [2022-11-23 02:20:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:20:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:20:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:20:05,733 INFO L87 Difference]: Start difference. First operand 2072 states and 3448 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:16,475 INFO L93 Difference]: Finished difference Result 5413 states and 9442 transitions. [2022-11-23 02:20:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 02:20:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 141 [2022-11-23 02:20:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:16,498 INFO L225 Difference]: With dead ends: 5413 [2022-11-23 02:20:16,499 INFO L226 Difference]: Without dead ends: 3387 [2022-11-23 02:20:16,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-11-23 02:20:16,509 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1900 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 5159 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 5697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 5159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:16,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 3344 Invalid, 5697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [538 Valid, 5159 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-23 02:20:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2022-11-23 02:20:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2152. [2022-11-23 02:20:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1662 states have (on average 1.6263537906137184) internal successors, (2703), 1738 states have internal predecessors, (2703), 398 states have call successors, (398), 73 states have call predecessors, (398), 91 states have return successors, (478), 400 states have call predecessors, (478), 393 states have call successors, (478) [2022-11-23 02:20:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3579 transitions. [2022-11-23 02:20:17,069 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3579 transitions. Word has length 141 [2022-11-23 02:20:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:17,070 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3579 transitions. [2022-11-23 02:20:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3579 transitions. [2022-11-23 02:20:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 02:20:17,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:17,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:17,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 02:20:17,080 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1425603474, now seen corresponding path program 1 times [2022-11-23 02:20:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:17,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34930555] [2022-11-23 02:20:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:20:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 02:20:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:20:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:20:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 02:20:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 02:20:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34930555] [2022-11-23 02:20:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34930555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:17,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:17,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:20:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238642541] [2022-11-23 02:20:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:17,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:20:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:20:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:20:17,608 INFO L87 Difference]: Start difference. First operand 2152 states and 3579 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:24,987 INFO L93 Difference]: Finished difference Result 3624 states and 6111 transitions. [2022-11-23 02:20:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:20:24,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 145 [2022-11-23 02:20:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:25,000 INFO L225 Difference]: With dead ends: 3624 [2022-11-23 02:20:25,001 INFO L226 Difference]: Without dead ends: 1486 [2022-11-23 02:20:25,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:20:25,011 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1319 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:25,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 1764 Invalid, 3164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [371 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 02:20:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-23 02:20:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 991. [2022-11-23 02:20:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 785 states have (on average 1.6191082802547772) internal successors, (1271), 818 states have internal predecessors, (1271), 163 states have call successors, (163), 40 states have call predecessors, (163), 42 states have return successors, (175), 157 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:20:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1609 transitions. [2022-11-23 02:20:25,290 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1609 transitions. Word has length 145 [2022-11-23 02:20:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:25,290 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1609 transitions. [2022-11-23 02:20:25,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1609 transitions. [2022-11-23 02:20:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-23 02:20:25,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:25,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:25,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 02:20:25,296 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:25,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1986822718, now seen corresponding path program 1 times [2022-11-23 02:20:25,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:25,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100794677] [2022-11-23 02:20:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:25,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:20:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:20:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-23 02:20:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:20:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 02:20:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100794677] [2022-11-23 02:20:25,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100794677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518150840] [2022-11-23 02:20:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:25,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:25,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:25,994 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:26,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-23 02:20:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:26,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:20:26,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:20:26,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:26,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518150840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:26,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:26,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-11-23 02:20:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010078169] [2022-11-23 02:20:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:26,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:20:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:20:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:20:26,387 INFO L87 Difference]: Start difference. First operand 991 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:27,033 INFO L93 Difference]: Finished difference Result 2607 states and 4327 transitions. [2022-11-23 02:20:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:20:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 146 [2022-11-23 02:20:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:27,041 INFO L225 Difference]: With dead ends: 2607 [2022-11-23 02:20:27,041 INFO L226 Difference]: Without dead ends: 1733 [2022-11-23 02:20:27,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:20:27,045 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 760 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:27,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1625 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:27,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2022-11-23 02:20:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1718. [2022-11-23 02:20:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1345 states have (on average 1.620817843866171) internal successors, (2180), 1403 states have internal predecessors, (2180), 298 states have call successors, (298), 72 states have call predecessors, (298), 74 states have return successors, (331), 291 states have call predecessors, (331), 293 states have call successors, (331) [2022-11-23 02:20:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2809 transitions. [2022-11-23 02:20:27,558 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2809 transitions. Word has length 146 [2022-11-23 02:20:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:27,559 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2809 transitions. [2022-11-23 02:20:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:20:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2809 transitions. [2022-11-23 02:20:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 02:20:27,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:27,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:27,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:27,772 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2123355544, now seen corresponding path program 1 times [2022-11-23 02:20:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058473230] [2022-11-23 02:20:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:27,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:20:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:20:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:20:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-23 02:20:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:20:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 02:20:28,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:28,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058473230] [2022-11-23 02:20:28,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058473230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:28,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263783354] [2022-11-23 02:20:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:28,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:28,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:28,485 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:28,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-23 02:20:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:28,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:20:28,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:20:28,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:28,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263783354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:28,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:28,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-11-23 02:20:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042981842] [2022-11-23 02:20:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:28,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:20:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:20:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:20:28,860 INFO L87 Difference]: Start difference. First operand 1718 states and 2809 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 02:20:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:29,751 INFO L93 Difference]: Finished difference Result 4779 states and 7951 transitions. [2022-11-23 02:20:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:20:29,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2022-11-23 02:20:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:29,766 INFO L225 Difference]: With dead ends: 4779 [2022-11-23 02:20:29,766 INFO L226 Difference]: Without dead ends: 3191 [2022-11-23 02:20:29,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:20:29,773 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 821 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:29,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1472 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-11-23 02:20:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3173. [2022-11-23 02:20:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 2466 states have (on average 1.6346309813463098) internal successors, (4031), 2578 states have internal predecessors, (4031), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-11-23 02:20:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 5255 transitions. [2022-11-23 02:20:30,729 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 5255 transitions. Word has length 151 [2022-11-23 02:20:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:30,730 INFO L495 AbstractCegarLoop]: Abstraction has 3173 states and 5255 transitions. [2022-11-23 02:20:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 02:20:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 5255 transitions. [2022-11-23 02:20:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 02:20:30,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:30,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:30,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:30,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:30,943 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1499051412, now seen corresponding path program 1 times [2022-11-23 02:20:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:30,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006481911] [2022-11-23 02:20:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:30,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:20:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:20:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:20:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:20:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:20:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 02:20:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:31,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006481911] [2022-11-23 02:20:31,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006481911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:31,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637997941] [2022-11-23 02:20:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:31,804 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:31,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-23 02:20:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:20:32,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:20:32,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:32,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637997941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:32,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:32,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-23 02:20:32,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304603299] [2022-11-23 02:20:32,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:20:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:20:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:20:32,295 INFO L87 Difference]: Start difference. First operand 3173 states and 5255 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 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 02:20:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:33,510 INFO L93 Difference]: Finished difference Result 5703 states and 9535 transitions. [2022-11-23 02:20:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:20:33,511 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), 3 states have call successors, (15), 2 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 154 [2022-11-23 02:20:33,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:33,534 INFO L225 Difference]: With dead ends: 5703 [2022-11-23 02:20:33,534 INFO L226 Difference]: Without dead ends: 3173 [2022-11-23 02:20:33,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:20:33,545 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 323 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:33,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2323 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2022-11-23 02:20:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3173. [2022-11-23 02:20:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 2466 states have (on average 1.6277372262773722) internal successors, (4014), 2578 states have internal predecessors, (4014), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-11-23 02:20:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 5238 transitions. [2022-11-23 02:20:34,618 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 5238 transitions. Word has length 154 [2022-11-23 02:20:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:34,621 INFO L495 AbstractCegarLoop]: Abstraction has 3173 states and 5238 transitions. [2022-11-23 02:20:34,622 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), 3 states have call successors, (15), 2 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 02:20:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 5238 transitions. [2022-11-23 02:20:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 02:20:34,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:34,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:34,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-23 02:20:34,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-23 02:20:34,834 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1899588620, now seen corresponding path program 1 times [2022-11-23 02:20:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:34,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706994901] [2022-11-23 02:20:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:20:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 02:20:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:20:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:20:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 02:20:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 02:20:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 02:20:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706994901] [2022-11-23 02:20:35,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706994901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:35,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:35,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:20:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298521907] [2022-11-23 02:20:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:20:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:20:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:20:35,632 INFO L87 Difference]: Start difference. First operand 3173 states and 5238 transitions. Second operand has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:20:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:54,100 INFO L93 Difference]: Finished difference Result 8597 states and 15370 transitions. [2022-11-23 02:20:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 02:20:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 156 [2022-11-23 02:20:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:54,144 INFO L225 Difference]: With dead ends: 8597 [2022-11-23 02:20:54,144 INFO L226 Difference]: Without dead ends: 6200 [2022-11-23 02:20:54,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 02:20:54,157 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 4174 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 7036 mSolverCounterSat, 1495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4234 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 8531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1495 IncrementalHoareTripleChecker+Valid, 7036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:54,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4234 Valid, 3779 Invalid, 8531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1495 Valid, 7036 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-23 02:20:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2022-11-23 02:20:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 4280. [2022-11-23 02:20:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3324 states have (on average 1.6161251504211793) internal successors, (5372), 3481 states have internal predecessors, (5372), 747 states have call successors, (747), 181 states have call predecessors, (747), 208 states have return successors, (951), 737 states have call predecessors, (951), 742 states have call successors, (951) [2022-11-23 02:20:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 7070 transitions. [2022-11-23 02:20:55,352 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 7070 transitions. Word has length 156 [2022-11-23 02:20:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:55,353 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 7070 transitions. [2022-11-23 02:20:55,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:20:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 7070 transitions. [2022-11-23 02:20:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 02:20:55,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:55,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-23 02:20:55,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-23 02:20:55,358 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash -609607598, now seen corresponding path program 1 times [2022-11-23 02:20:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:55,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341250056] [2022-11-23 02:20:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:20:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:20:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 02:20:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:20:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:20:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:20:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341250056] [2022-11-23 02:20:56,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341250056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:20:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886269187] [2022-11-23 02:20:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:56,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:20:56,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:20:56,041 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:20:56,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-23 02:20:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:20:56,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:20:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 02:20:56,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:20:56,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886269187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:56,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:20:56,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-23 02:20:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934083254] [2022-11-23 02:20:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:20:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:20:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:20:56,516 INFO L87 Difference]: Start difference. First operand 4280 states and 7070 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 02:20:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:20:57,666 INFO L93 Difference]: Finished difference Result 8492 states and 14266 transitions. [2022-11-23 02:20:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:20:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 158 [2022-11-23 02:20:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:20:57,687 INFO L225 Difference]: With dead ends: 8492 [2022-11-23 02:20:57,687 INFO L226 Difference]: Without dead ends: 4330 [2022-11-23 02:20:57,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:20:57,701 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 22 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:20:57,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2353 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:20:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2022-11-23 02:20:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 4330. [2022-11-23 02:20:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 3364 states have (on average 1.6055291319857312) internal successors, (5401), 3526 states have internal predecessors, (5401), 747 states have call successors, (747), 186 states have call predecessors, (747), 218 states have return successors, (961), 737 states have call predecessors, (961), 742 states have call successors, (961) [2022-11-23 02:20:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 7109 transitions. [2022-11-23 02:20:58,840 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 7109 transitions. Word has length 158 [2022-11-23 02:20:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:20:58,840 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 7109 transitions. [2022-11-23 02:20:58,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 02:20:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 7109 transitions. [2022-11-23 02:20:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 02:20:58,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:20:58,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 02:20:58,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-11-23 02:20:59,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-23 02:20:59,044 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:20:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1909879435, now seen corresponding path program 1 times [2022-11-23 02:20:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500643427] [2022-11-23 02:20:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:20:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:20:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:20:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:20:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:20:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:20:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:20:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:20:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:20:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 02:20:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:20:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:20:59,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:59,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500643427] [2022-11-23 02:20:59,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500643427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:59,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:59,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 02:20:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432697221] [2022-11-23 02:20:59,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:59,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:20:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:20:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:20:59,801 INFO L87 Difference]: Start difference. First operand 4330 states and 7109 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:21:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:21:17,097 INFO L93 Difference]: Finished difference Result 9867 states and 17012 transitions. [2022-11-23 02:21:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 02:21:17,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 159 [2022-11-23 02:21:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:21:17,134 INFO L225 Difference]: With dead ends: 9867 [2022-11-23 02:21:17,134 INFO L226 Difference]: Without dead ends: 6317 [2022-11-23 02:21:17,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-23 02:21:17,145 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 4139 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 5978 mSolverCounterSat, 1411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 7389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1411 IncrementalHoareTripleChecker+Valid, 5978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:21:17,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4197 Valid, 2838 Invalid, 7389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1411 Valid, 5978 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 02:21:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2022-11-23 02:21:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 4691. [2022-11-23 02:21:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 3657 states have (on average 1.5849056603773586) internal successors, (5796), 3818 states have internal predecessors, (5796), 786 states have call successors, (786), 219 states have call predecessors, (786), 247 states have return successors, (1019), 773 states have call predecessors, (1019), 781 states have call successors, (1019) [2022-11-23 02:21:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 7601 transitions. [2022-11-23 02:21:18,879 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 7601 transitions. Word has length 159 [2022-11-23 02:21:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:21:18,879 INFO L495 AbstractCegarLoop]: Abstraction has 4691 states and 7601 transitions. [2022-11-23 02:21:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:21:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 7601 transitions. [2022-11-23 02:21:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 02:21:18,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:21:18,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-23 02:21:18,883 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:21:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1919597385, now seen corresponding path program 1 times [2022-11-23 02:21:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:18,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475034420] [2022-11-23 02:21:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:21:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:21:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:21:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:21:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:21:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:21:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:21:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:21:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 02:21:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-23 02:21:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:21:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:21:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:21:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 02:21:20,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:20,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475034420] [2022-11-23 02:21:20,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475034420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:20,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:20,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 02:21:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966804547] [2022-11-23 02:21:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:20,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:21:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:21:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:21:20,061 INFO L87 Difference]: Start difference. First operand 4691 states and 7601 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 8 states have internal predecessors, (112), 4 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 02:21:35,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:21:35,279 INFO L93 Difference]: Finished difference Result 11867 states and 20394 transitions. [2022-11-23 02:21:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 02:21:35,280 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 8 states have internal predecessors, (112), 4 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2022-11-23 02:21:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:21:35,312 INFO L225 Difference]: With dead ends: 11867 [2022-11-23 02:21:35,312 INFO L226 Difference]: Without dead ends: 7304 [2022-11-23 02:21:35,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 02:21:35,326 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2958 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 6540 mSolverCounterSat, 1354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2958 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 7894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1354 IncrementalHoareTripleChecker+Valid, 6540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:21:35,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2958 Valid, 2789 Invalid, 7894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1354 Valid, 6540 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-23 02:21:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2022-11-23 02:21:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 4721. [2022-11-23 02:21:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 3677 states have (on average 1.5722056023932554) internal successors, (5781), 3843 states have internal predecessors, (5781), 786 states have call successors, (786), 219 states have call predecessors, (786), 257 states have return successors, (1079), 778 states have call predecessors, (1079), 781 states have call successors, (1079) [2022-11-23 02:21:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 7646 transitions. [2022-11-23 02:21:36,753 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 7646 transitions. Word has length 166 [2022-11-23 02:21:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:21:36,753 INFO L495 AbstractCegarLoop]: Abstraction has 4721 states and 7646 transitions. [2022-11-23 02:21:36,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 8 states have internal predecessors, (112), 4 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 02:21:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 7646 transitions. [2022-11-23 02:21:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-23 02:21:36,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:21:36,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:36,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-23 02:21:36,757 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:21:36,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash 274235774, now seen corresponding path program 1 times [2022-11-23 02:21:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:36,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625203695] [2022-11-23 02:21:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:21:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:21:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:21:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:21:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:21:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:21:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:21:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:21:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:21:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 02:21:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-23 02:21:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:21:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:21:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:21:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 02:21:37,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:37,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625203695] [2022-11-23 02:21:37,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625203695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:37,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:37,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:21:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856002543] [2022-11-23 02:21:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:21:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:21:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:21:37,470 INFO L87 Difference]: Start difference. First operand 4721 states and 7646 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 02:22:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:05,811 INFO L93 Difference]: Finished difference Result 23543 states and 43186 transitions. [2022-11-23 02:22:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 02:22:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2022-11-23 02:22:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:05,989 INFO L225 Difference]: With dead ends: 23543 [2022-11-23 02:22:05,990 INFO L226 Difference]: Without dead ends: 18956 [2022-11-23 02:22:06,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2022-11-23 02:22:06,033 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 3935 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 6061 mSolverCounterSat, 2151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 8212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 6061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:06,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4001 Valid, 2504 Invalid, 8212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2151 Valid, 6061 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2022-11-23 02:22:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2022-11-23 02:22:10,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 12156. [2022-11-23 02:22:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12156 states, 8958 states have (on average 1.5644116990399644) internal successors, (14014), 9576 states have internal predecessors, (14014), 2656 states have call successors, (2656), 427 states have call predecessors, (2656), 541 states have return successors, (3857), 2632 states have call predecessors, (3857), 2651 states have call successors, (3857) [2022-11-23 02:22:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12156 states to 12156 states and 20527 transitions. [2022-11-23 02:22:11,022 INFO L78 Accepts]: Start accepts. Automaton has 12156 states and 20527 transitions. Word has length 167 [2022-11-23 02:22:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:11,023 INFO L495 AbstractCegarLoop]: Abstraction has 12156 states and 20527 transitions. [2022-11-23 02:22:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 02:22:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 12156 states and 20527 transitions. [2022-11-23 02:22:11,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 02:22:11,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:11,032 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:11,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-23 02:22:11,033 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1758892287, now seen corresponding path program 1 times [2022-11-23 02:22:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:11,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517168623] [2022-11-23 02:22:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:22:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:22:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:22:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:22:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:22:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 02:22:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:22:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:22:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:22:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:22:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:22:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 02:22:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 02:22:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:22:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:11,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517168623] [2022-11-23 02:22:11,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517168623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:22:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706224745] [2022-11-23 02:22:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:11,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:22:11,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:22:11,809 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:22:11,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-23 02:22:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:12,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:22:12,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:22:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 02:22:12,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:22:12,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706224745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:22:12,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:22:12,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-23 02:22:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033894666] [2022-11-23 02:22:12,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:22:12,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:22:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:22:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:22:12,226 INFO L87 Difference]: Start difference. First operand 12156 states and 20527 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 02:22:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:22:21,814 INFO L93 Difference]: Finished difference Result 33256 states and 56676 transitions. [2022-11-23 02:22:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:22:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 174 [2022-11-23 02:22:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:22:21,940 INFO L225 Difference]: With dead ends: 33256 [2022-11-23 02:22:21,940 INFO L226 Difference]: Without dead ends: 22999 [2022-11-23 02:22:21,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:22:21,985 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 910 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:22:21,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 3432 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:22:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22999 states. [2022-11-23 02:22:29,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22999 to 21700. [2022-11-23 02:22:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21700 states, 15848 states have (on average 1.581019687026754) internal successors, (25056), 17001 states have internal predecessors, (25056), 4902 states have call successors, (4902), 792 states have call predecessors, (4902), 949 states have return successors, (6809), 4866 states have call predecessors, (6809), 4897 states have call successors, (6809) [2022-11-23 02:22:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21700 states to 21700 states and 36767 transitions. [2022-11-23 02:22:29,791 INFO L78 Accepts]: Start accepts. Automaton has 21700 states and 36767 transitions. Word has length 174 [2022-11-23 02:22:29,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:22:29,792 INFO L495 AbstractCegarLoop]: Abstraction has 21700 states and 36767 transitions. [2022-11-23 02:22:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 02:22:29,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21700 states and 36767 transitions. [2022-11-23 02:22:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-23 02:22:29,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:22:29,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:22:29,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-23 02:22:30,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a67c3d-93cb-4a17-8304-86b04dd9ac20/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-23 02:22:30,019 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:22:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:22:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1839210634, now seen corresponding path program 1 times [2022-11-23 02:22:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:22:30,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067555302] [2022-11-23 02:22:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:22:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:22:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:22:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:22:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:22:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:22:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:22:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:22:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:22:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:22:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:22:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 02:22:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-23 02:22:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:22:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:22:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:22:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 02:22:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:22:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:22:31,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:22:31,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067555302] [2022-11-23 02:22:31,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067555302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:22:31,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:22:31,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:22:31,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013671008] [2022-11-23 02:22:31,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:22:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:22:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:22:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:22:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:22:31,104 INFO L87 Difference]: Start difference. First operand 21700 states and 36767 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18)