./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R --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 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- 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-38b53e6 [2022-11-25 18:04:00,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:04:00,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:04:00,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:04:00,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:04:00,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:04:00,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:04:00,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:04:00,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:04:00,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:04:00,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:04:00,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:04:00,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:04:00,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:04:00,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:04:00,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:04:00,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:04:00,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:04:00,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:04:00,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:04:00,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:04:00,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:04:00,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:04:00,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:04:00,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:04:00,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:04:00,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:04:00,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:04:00,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:04:00,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:04:00,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:04:00,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:04:00,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:04:00,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:04:00,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:04:00,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:04:00,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:04:00,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:04:00,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:04:00,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:04:00,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:04:00,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:04:00,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:04:00,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:04:00,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:04:00,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:04:00,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:04:00,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:04:00,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:04:00,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:04:00,322 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:04:00,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:04:00,323 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:04:00,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:04:00,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:04:00,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:04:00,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:04:00,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:04:00,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:04:00,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:04:00,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:04:00,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:04:00,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:04:00,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:04:00,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:04:00,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:04:00,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:00,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:04:00,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:04:00,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:04:00,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:04:00,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:04:00,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:04:00,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:04:00,329 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:04:00,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:04:00,330 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_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2022-11-25 18:04:00,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:04:00,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:04:00,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:04:00,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:04:00,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:04:00,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2022-11-25 18:04:04,280 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:04:04,661 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:04:04,662 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2022-11-25 18:04:04,690 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/data/09ececec9/1e360fd9f6fd4bba89c8ddfe40c79298/FLAG90fd26daa [2022-11-25 18:04:04,708 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/data/09ececec9/1e360fd9f6fd4bba89c8ddfe40c79298 [2022-11-25 18:04:04,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:04:04,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:04:04,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:04,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:04:04,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:04:04,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:04" (1/1) ... [2022-11-25 18:04:04,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b72d1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:04, skipping insertion in model container [2022-11-25 18:04:04,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:04" (1/1) ... [2022-11-25 18:04:04,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:04:04,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:04:05,174 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_770fa8bc-6bd4-468b-a21a-b67a1f323f45/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-11-25 18:04:05,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:05,441 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:04:05,526 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_770fa8bc-6bd4-468b-a21a-b67a1f323f45/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-11-25 18:04:05,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:05,735 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:04:05,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05 WrapperNode [2022-11-25 18:04:05,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:05,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:05,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:04:05,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:04:05,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,852 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 835 [2022-11-25 18:04:05,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:05,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:04:05,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:04:05,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:04:05,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:04:05,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:04:05,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:04:05,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:04:05,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (1/1) ... [2022-11-25 18:04:05,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:05,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:04:06,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:04:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-25 18:04:06,085 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-25 18:04:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:04:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 18:04:06,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 18:04:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 18:04:06,088 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 18:04:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 18:04:06,089 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 18:04:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 18:04:06,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 18:04:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 18:04:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 18:04:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 18:04:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 18:04:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 18:04:06,091 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 18:04:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 18:04:06,092 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 18:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 18:04:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 18:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 18:04:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 18:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 18:04:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 18:04:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 18:04:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 18:04:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 18:04:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 18:04:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 18:04:06,096 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 18:04:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 18:04:06,097 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 18:04:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 18:04:06,098 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 18:04:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 18:04:06,098 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 18:04:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:04:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 18:04:06,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 18:04:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 18:04:06,100 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 18:04:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 18:04:06,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 18:04:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:04:06,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:04:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 18:04:06,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 18:04:06,362 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:04:06,365 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:04:07,793 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:04:07,830 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:04:07,830 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:04:07,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:07 BoogieIcfgContainer [2022-11-25 18:04:07,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:04:07,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:04:07,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:04:07,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:04:07,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:04" (1/3) ... [2022-11-25 18:04:07,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef880f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:07, skipping insertion in model container [2022-11-25 18:04:07,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:05" (2/3) ... [2022-11-25 18:04:07,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef880f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:07, skipping insertion in model container [2022-11-25 18:04:07,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:07" (3/3) ... [2022-11-25 18:04:07,855 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2022-11-25 18:04:07,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:04:07,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:04:07,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:04:07,986 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;@5ea08394, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:04:07,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:04:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 548 states, 433 states have (on average 1.7066974595842956) internal successors, (739), 454 states have internal predecessors, (739), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-25 18:04:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 18:04:08,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:08,026 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] [2022-11-25 18:04:08,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1967759717, now seen corresponding path program 1 times [2022-11-25 18:04:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:08,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013541100] [2022-11-25 18:04:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:08,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:04:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:04:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:04:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 18:04:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:04:09,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:09,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013541100] [2022-11-25 18:04:09,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013541100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:09,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365065072] [2022-11-25 18:04:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:09,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:09,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:09,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:09,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:04:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:10,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:04:10,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 18:04:10,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:10,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365065072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:10,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:10,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-11-25 18:04:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497848097] [2022-11-25 18:04:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:10,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:04:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:04:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:04:10,263 INFO L87 Difference]: Start difference. First operand has 548 states, 433 states have (on average 1.7066974595842956) internal successors, (739), 454 states have internal predecessors, (739), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) 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) [2022-11-25 18:04:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:10,373 INFO L93 Difference]: Finished difference Result 569 states and 951 transitions. [2022-11-25 18:04:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:04:10,375 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 [2022-11-25 18:04:10,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:10,400 INFO L225 Difference]: With dead ends: 569 [2022-11-25 18:04:10,400 INFO L226 Difference]: Without dead ends: 540 [2022-11-25 18:04:10,405 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 [2022-11-25 18:04:10,408 INFO L413 NwaCegarLoop]: 912 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, 912 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 [2022-11-25 18:04:10,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-25 18:04:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-11-25 18:04:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 427 states have (on average 1.7049180327868851) internal successors, (728), 446 states have internal predecessors, (728), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-25 18:04:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 905 transitions. [2022-11-25 18:04:10,518 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 905 transitions. Word has length 97 [2022-11-25 18:04:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:10,520 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 905 transitions. [2022-11-25 18:04:10,521 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) [2022-11-25 18:04:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 905 transitions. [2022-11-25 18:04:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 18:04:10,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:10,531 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] [2022-11-25 18:04:10,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:10,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:04:10,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1542777770, now seen corresponding path program 1 times [2022-11-25 18:04:10,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:10,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479214460] [2022-11-25 18:04:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:10,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:04:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:04:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:04:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 18:04:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:04:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:11,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479214460] [2022-11-25 18:04:11,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479214460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:11,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177526937] [2022-11-25 18:04:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:11,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:11,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:04:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:12,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:04:12,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:12,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177526937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:12,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:12,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:12,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611430680] [2022-11-25 18:04:12,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:12,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:12,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:12,245 INFO L87 Difference]: Start difference. First operand 540 states and 905 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) [2022-11-25 18:04:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:12,364 INFO L93 Difference]: Finished difference Result 1071 states and 1802 transitions. [2022-11-25 18:04:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:12,365 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 [2022-11-25 18:04:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:12,372 INFO L225 Difference]: With dead ends: 1071 [2022-11-25 18:04:12,373 INFO L226 Difference]: Without dead ends: 540 [2022-11-25 18:04:12,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:12,380 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 14 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2666 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 [2022-11-25 18:04:12,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2666 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-25 18:04:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-11-25 18:04:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 427 states have (on average 1.7025761124121779) internal successors, (727), 446 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-25 18:04:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 904 transitions. [2022-11-25 18:04:12,463 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 904 transitions. Word has length 99 [2022-11-25 18:04:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:12,463 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 904 transitions. [2022-11-25 18:04:12,464 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) [2022-11-25 18:04:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 904 transitions. [2022-11-25 18:04:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 18:04:12,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:12,474 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] [2022-11-25 18:04:12,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:12,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1481525902, now seen corresponding path program 1 times [2022-11-25 18:04:12,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042401527] [2022-11-25 18:04:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:12,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:04:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 18:04:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:04:13,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:13,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042401527] [2022-11-25 18:04:13,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042401527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:13,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928779276] [2022-11-25 18:04:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:13,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:13,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:13,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:13,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:04:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:14,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:14,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:04:14,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:14,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928779276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:14,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:14,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631910442] [2022-11-25 18:04:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:14,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:14,182 INFO L87 Difference]: Start difference. First operand 540 states and 904 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) [2022-11-25 18:04:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:14,327 INFO L93 Difference]: Finished difference Result 1071 states and 1800 transitions. [2022-11-25 18:04:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:14,335 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 [2022-11-25 18:04:14,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:14,341 INFO L225 Difference]: With dead ends: 1071 [2022-11-25 18:04:14,341 INFO L226 Difference]: Without dead ends: 540 [2022-11-25 18:04:14,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:14,349 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 12 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:14,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2666 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-25 18:04:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-11-25 18:04:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 427 states have (on average 1.7002341920374706) internal successors, (726), 446 states have internal predecessors, (726), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-25 18:04:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 903 transitions. [2022-11-25 18:04:14,406 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 903 transitions. Word has length 101 [2022-11-25 18:04:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:14,408 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 903 transitions. [2022-11-25 18:04:14,408 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) [2022-11-25 18:04:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 903 transitions. [2022-11-25 18:04:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 18:04:14,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:14,413 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] [2022-11-25 18:04:14,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 18:04:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:14,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1026290454, now seen corresponding path program 1 times [2022-11-25 18:04:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:14,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522073283] [2022-11-25 18:04:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 18:04:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 18:04:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:04:15,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:15,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522073283] [2022-11-25 18:04:15,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522073283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:15,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850039644] [2022-11-25 18:04:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:15,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:15,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:15,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:15,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:04:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:15,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:15,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:04:15,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850039644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:15,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:15,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734712888] [2022-11-25 18:04:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:15,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:15,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:15,896 INFO L87 Difference]: Start difference. First operand 540 states and 903 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) [2022-11-25 18:04:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:16,012 INFO L93 Difference]: Finished difference Result 1078 states and 1807 transitions. [2022-11-25 18:04:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:16,013 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 [2022-11-25 18:04:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:16,019 INFO L225 Difference]: With dead ends: 1078 [2022-11-25 18:04:16,019 INFO L226 Difference]: Without dead ends: 549 [2022-11-25 18:04:16,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:16,023 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 20 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2666 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 [2022-11-25 18:04:16,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2666 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-25 18:04:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-25 18:04:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 435 states have (on average 1.696551724137931) internal successors, (738), 454 states have internal predecessors, (738), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-25 18:04:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2022-11-25 18:04:16,055 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 103 [2022-11-25 18:04:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:16,056 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2022-11-25 18:04:16,056 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) [2022-11-25 18:04:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2022-11-25 18:04:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 18:04:16,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:16,061 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] [2022-11-25 18:04:16,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:16,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:16,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1866135415, now seen corresponding path program 1 times [2022-11-25 18:04:16,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148747779] [2022-11-25 18:04:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:16,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:04:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:04:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 18:04:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:04:16,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148747779] [2022-11-25 18:04:16,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148747779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933837368] [2022-11-25 18:04:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:16,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:16,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:16,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:04:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:17,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:04:17,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:17,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933837368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:17,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:17,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:17,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888742527] [2022-11-25 18:04:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:17,446 INFO L87 Difference]: Start difference. First operand 549 states and 915 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) [2022-11-25 18:04:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:17,538 INFO L93 Difference]: Finished difference Result 1080 states and 1808 transitions. [2022-11-25 18:04:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:17,539 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 [2022-11-25 18:04:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:17,544 INFO L225 Difference]: With dead ends: 1080 [2022-11-25 18:04:17,544 INFO L226 Difference]: Without dead ends: 549 [2022-11-25 18:04:17,547 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 [2022-11-25 18:04:17,548 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 18 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2666 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 [2022-11-25 18:04:17,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2666 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-25 18:04:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-25 18:04:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 435 states have (on average 1.6942528735632183) internal successors, (737), 454 states have internal predecessors, (737), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-25 18:04:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 914 transitions. [2022-11-25 18:04:17,578 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 914 transitions. Word has length 104 [2022-11-25 18:04:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:17,578 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 914 transitions. [2022-11-25 18:04:17,579 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) [2022-11-25 18:04:17,579 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 914 transitions. [2022-11-25 18:04:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 18:04:17,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:17,583 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] [2022-11-25 18:04:17,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:17,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:17,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 621974734, now seen corresponding path program 1 times [2022-11-25 18:04:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:17,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990399650] [2022-11-25 18:04:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-25 18:04:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:04:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:04:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:18,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990399650] [2022-11-25 18:04:18,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990399650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:18,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741442142] [2022-11-25 18:04:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:18,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:18,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:18,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:18,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:04:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:18,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:18,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:04:18,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741442142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:18,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:18,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622643227] [2022-11-25 18:04:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:18,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:18,935 INFO L87 Difference]: Start difference. First operand 549 states and 914 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) [2022-11-25 18:04:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:19,023 INFO L93 Difference]: Finished difference Result 1080 states and 1807 transitions. [2022-11-25 18:04:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:19,024 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 [2022-11-25 18:04:19,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:19,029 INFO L225 Difference]: With dead ends: 1080 [2022-11-25 18:04:19,029 INFO L226 Difference]: Without dead ends: 549 [2022-11-25 18:04:19,033 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 [2022-11-25 18:04:19,034 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 17 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2666 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 [2022-11-25 18:04:19,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2666 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-25 18:04:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-25 18:04:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 435 states have (on average 1.6919540229885057) internal successors, (736), 454 states have internal predecessors, (736), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-25 18:04:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 913 transitions. [2022-11-25 18:04:19,061 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 913 transitions. Word has length 105 [2022-11-25 18:04:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:19,061 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 913 transitions. [2022-11-25 18:04:19,062 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) [2022-11-25 18:04:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 913 transitions. [2022-11-25 18:04:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-25 18:04:19,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:19,066 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] [2022-11-25 18:04:19,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:19,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:19,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:19,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1097489107, now seen corresponding path program 1 times [2022-11-25 18:04:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:19,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816843457] [2022-11-25 18:04:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:19,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 18:04:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:04:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:04:20,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:20,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816843457] [2022-11-25 18:04:20,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816843457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:20,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844648283] [2022-11-25 18:04:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:20,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:20,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:20,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:20,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:04:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:20,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:04:20,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:20,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:20,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844648283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:20,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:20,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-25 18:04:20,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272595466] [2022-11-25 18:04:20,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:04:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:04:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:04:20,721 INFO L87 Difference]: Start difference. First operand 549 states and 913 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) [2022-11-25 18:04:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:20,880 INFO L93 Difference]: Finished difference Result 1099 states and 1837 transitions. [2022-11-25 18:04:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:04:20,881 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 [2022-11-25 18:04:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:20,892 INFO L225 Difference]: With dead ends: 1099 [2022-11-25 18:04:20,893 INFO L226 Difference]: Without dead ends: 572 [2022-11-25 18:04:20,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:04:20,896 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 148 mSDsluCounter, 4347 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5239 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 [2022-11-25 18:04:20,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5239 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-25 18:04:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2022-11-25 18:04:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 451 states have (on average 1.689578713968958) internal successors, (762), 472 states have internal predecessors, (762), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-11-25 18:04:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 944 transitions. [2022-11-25 18:04:20,925 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 944 transitions. Word has length 106 [2022-11-25 18:04:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:20,927 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 944 transitions. [2022-11-25 18:04:20,927 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) [2022-11-25 18:04:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 944 transitions. [2022-11-25 18:04:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-25 18:04:20,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:20,931 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] [2022-11-25 18:04:20,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:21,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 18:04:21,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1482855890, now seen corresponding path program 1 times [2022-11-25 18:04:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:21,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160146103] [2022-11-25 18:04:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 18:04:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:04:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:04:21,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:21,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160146103] [2022-11-25 18:04:21,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160146103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874214944] [2022-11-25 18:04:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:21,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:21,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:21,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:04:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:22,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:22,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:22,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:22,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874214944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:22,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:22,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752147045] [2022-11-25 18:04:22,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:22,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:22,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:22,374 INFO L87 Difference]: Start difference. First operand 568 states and 944 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) [2022-11-25 18:04:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:22,551 INFO L93 Difference]: Finished difference Result 1140 states and 1911 transitions. [2022-11-25 18:04:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:22,552 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 [2022-11-25 18:04:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:22,558 INFO L225 Difference]: With dead ends: 1140 [2022-11-25 18:04:22,558 INFO L226 Difference]: Without dead ends: 568 [2022-11-25 18:04:22,561 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 [2022-11-25 18:04:22,563 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 135 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2483 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 [2022-11-25 18:04:22,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2483 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-25 18:04:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-11-25 18:04:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 472 states have internal predecessors, (757), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-11-25 18:04:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 939 transitions. [2022-11-25 18:04:22,593 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 939 transitions. Word has length 106 [2022-11-25 18:04:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:22,593 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 939 transitions. [2022-11-25 18:04:22,594 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) [2022-11-25 18:04:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 939 transitions. [2022-11-25 18:04:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 18:04:22,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:22,598 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] [2022-11-25 18:04:22,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 18:04:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:22,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1328827690, now seen corresponding path program 1 times [2022-11-25 18:04:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:22,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638593926] [2022-11-25 18:04:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 18:04:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 18:04:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:04:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638593926] [2022-11-25 18:04:23,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638593926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963410620] [2022-11-25 18:04:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:23,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:23,492 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:23,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:04:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:23,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:24,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:24,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963410620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:24,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:24,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334340781] [2022-11-25 18:04:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:24,009 INFO L87 Difference]: Start difference. First operand 568 states and 939 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) [2022-11-25 18:04:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:24,191 INFO L93 Difference]: Finished difference Result 1140 states and 1901 transitions. [2022-11-25 18:04:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:24,192 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 [2022-11-25 18:04:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:24,198 INFO L225 Difference]: With dead ends: 1140 [2022-11-25 18:04:24,198 INFO L226 Difference]: Without dead ends: 568 [2022-11-25 18:04:24,202 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 [2022-11-25 18:04:24,205 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 129 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2483 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 [2022-11-25 18:04:24,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2483 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-25 18:04:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-11-25 18:04:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 472 states have internal predecessors, (752), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-11-25 18:04:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 934 transitions. [2022-11-25 18:04:24,233 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 934 transitions. Word has length 108 [2022-11-25 18:04:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:24,233 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 934 transitions. [2022-11-25 18:04:24,233 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) [2022-11-25 18:04:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 934 transitions. [2022-11-25 18:04:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 18:04:24,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:24,238 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] [2022-11-25 18:04:24,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:24,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:24,449 INFO L85 PathProgramCache]: Analyzing trace with hash -595103666, now seen corresponding path program 1 times [2022-11-25 18:04:24,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:24,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495687135] [2022-11-25 18:04:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:24,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:04:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:04:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:04:25,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:25,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495687135] [2022-11-25 18:04:25,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495687135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:25,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331353169] [2022-11-25 18:04:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:25,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:25,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:25,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:25,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:04:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:25,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:25,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:25,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331353169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:25,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:25,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:25,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516300936] [2022-11-25 18:04:25,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:25,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:25,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:25,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:25,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:25,643 INFO L87 Difference]: Start difference. First operand 568 states and 934 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) [2022-11-25 18:04:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:25,859 INFO L93 Difference]: Finished difference Result 1176 states and 1949 transitions. [2022-11-25 18:04:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:25,860 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 [2022-11-25 18:04:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:25,873 INFO L225 Difference]: With dead ends: 1176 [2022-11-25 18:04:25,873 INFO L226 Difference]: Without dead ends: 634 [2022-11-25 18:04:25,876 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 [2022-11-25 18:04:25,877 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 179 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:25,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2493 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:04:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-25 18:04:25,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 619. [2022-11-25 18:04:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 501 states have (on average 1.6706586826347305) internal successors, (837), 522 states have internal predecessors, (837), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-11-25 18:04:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1018 transitions. [2022-11-25 18:04:25,917 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1018 transitions. Word has length 110 [2022-11-25 18:04:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:25,918 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1018 transitions. [2022-11-25 18:04:25,918 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) [2022-11-25 18:04:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1018 transitions. [2022-11-25 18:04:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 18:04:25,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:25,923 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] [2022-11-25 18:04:25,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:26,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:04:26,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash -947806956, now seen corresponding path program 1 times [2022-11-25 18:04:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:26,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886691726] [2022-11-25 18:04:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:04:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:04:26,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:26,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886691726] [2022-11-25 18:04:26,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886691726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415605462] [2022-11-25 18:04:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:26,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:26,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:26,894 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:26,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:04:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:27,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:04:27,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:27,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:27,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415605462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:27,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:27,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-25 18:04:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619104382] [2022-11-25 18:04:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:27,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:04:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:04:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:04:27,614 INFO L87 Difference]: Start difference. First operand 619 states and 1018 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) [2022-11-25 18:04:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:27,849 INFO L93 Difference]: Finished difference Result 1168 states and 1929 transitions. [2022-11-25 18:04:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:04:27,850 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 [2022-11-25 18:04:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:27,856 INFO L225 Difference]: With dead ends: 1168 [2022-11-25 18:04:27,856 INFO L226 Difference]: Without dead ends: 641 [2022-11-25 18:04:27,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:04:27,863 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 177 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5997 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 [2022-11-25 18:04:27,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5997 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-25 18:04:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 619. [2022-11-25 18:04:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 501 states have (on average 1.6706586826347305) internal successors, (837), 522 states have internal predecessors, (837), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-11-25 18:04:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1018 transitions. [2022-11-25 18:04:27,905 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1018 transitions. Word has length 111 [2022-11-25 18:04:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:27,907 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1018 transitions. [2022-11-25 18:04:27,907 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) [2022-11-25 18:04:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1018 transitions. [2022-11-25 18:04:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 18:04:27,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:27,913 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] [2022-11-25 18:04:27,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:28,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:28,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:28,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash 854479412, now seen corresponding path program 1 times [2022-11-25 18:04:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867388900] [2022-11-25 18:04:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:04:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:04:28,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:28,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867388900] [2022-11-25 18:04:28,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867388900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:28,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78897418] [2022-11-25 18:04:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:28,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:28,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:28,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:28,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 18:04:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:29,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:29,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:29,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:29,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78897418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:29,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:29,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900958218] [2022-11-25 18:04:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:29,317 INFO L87 Difference]: Start difference. First operand 619 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2022-11-25 18:04:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:29,544 INFO L93 Difference]: Finished difference Result 1176 states and 1947 transitions. [2022-11-25 18:04:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 111 [2022-11-25 18:04:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:29,552 INFO L225 Difference]: With dead ends: 1176 [2022-11-25 18:04:29,552 INFO L226 Difference]: Without dead ends: 619 [2022-11-25 18:04:29,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:29,557 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 173 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:29,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2493 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:04:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-25 18:04:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-11-25 18:04:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 501 states have (on average 1.6606786427145708) internal successors, (832), 522 states have internal predecessors, (832), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-11-25 18:04:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1013 transitions. [2022-11-25 18:04:29,591 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1013 transitions. Word has length 111 [2022-11-25 18:04:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:29,592 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1013 transitions. [2022-11-25 18:04:29,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2022-11-25 18:04:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1013 transitions. [2022-11-25 18:04:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 18:04:29,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:29,597 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] [2022-11-25 18:04:29,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:29,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:29,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1757294413, now seen corresponding path program 1 times [2022-11-25 18:04:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:29,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837563890] [2022-11-25 18:04:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:29,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:04:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:04:30,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:30,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837563890] [2022-11-25 18:04:30,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837563890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:30,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362390878] [2022-11-25 18:04:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:30,485 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:30,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 18:04:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:30,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:04:30,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:04:31,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:31,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362390878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:31,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:31,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-25 18:04:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594604445] [2022-11-25 18:04:31,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:04:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:04:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:04:31,026 INFO L87 Difference]: Start difference. First operand 619 states and 1013 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) [2022-11-25 18:04:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:31,168 INFO L93 Difference]: Finished difference Result 1103 states and 1821 transitions. [2022-11-25 18:04:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:04:31,169 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 [2022-11-25 18:04:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:31,175 INFO L225 Difference]: With dead ends: 1103 [2022-11-25 18:04:31,175 INFO L226 Difference]: Without dead ends: 643 [2022-11-25 18:04:31,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:04:31,179 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 134 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5198 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 [2022-11-25 18:04:31,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5198 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-25 18:04:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 638. [2022-11-25 18:04:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 517 states have (on average 1.6595744680851063) internal successors, (858), 540 states have internal predecessors, (858), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1043 transitions. [2022-11-25 18:04:31,259 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1043 transitions. Word has length 111 [2022-11-25 18:04:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:31,260 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1043 transitions. [2022-11-25 18:04:31,260 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) [2022-11-25 18:04:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1043 transitions. [2022-11-25 18:04:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-25 18:04:31,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:31,265 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] [2022-11-25 18:04:31,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:31,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:31,474 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1515032222, now seen corresponding path program 1 times [2022-11-25 18:04:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:31,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937889092] [2022-11-25 18:04:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:04:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:04:32,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:32,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937889092] [2022-11-25 18:04:32,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937889092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:32,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115744916] [2022-11-25 18:04:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:32,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:32,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:32,141 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:32,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 18:04:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:32,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:04:32,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:04:32,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:32,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115744916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:32,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:32,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-25 18:04:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52919446] [2022-11-25 18:04:32,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:32,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:04:32,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:32,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:04:32,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:04:32,675 INFO L87 Difference]: Start difference. First operand 638 states and 1043 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) [2022-11-25 18:04:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:32,824 INFO L93 Difference]: Finished difference Result 1133 states and 1872 transitions. [2022-11-25 18:04:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:04:32,825 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 [2022-11-25 18:04:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:32,831 INFO L225 Difference]: With dead ends: 1133 [2022-11-25 18:04:32,831 INFO L226 Difference]: Without dead ends: 673 [2022-11-25 18:04:32,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:04:32,836 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 143 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5188 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 [2022-11-25 18:04:32,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5188 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-25 18:04:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 638. [2022-11-25 18:04:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 517 states have (on average 1.6595744680851063) internal successors, (858), 540 states have internal predecessors, (858), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1043 transitions. [2022-11-25 18:04:32,866 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1043 transitions. Word has length 112 [2022-11-25 18:04:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:32,867 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1043 transitions. [2022-11-25 18:04:32,867 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) [2022-11-25 18:04:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1043 transitions. [2022-11-25 18:04:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-25 18:04:32,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:32,872 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] [2022-11-25 18:04:32,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-25 18:04:33,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 18:04:33,081 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:33,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash -176828958, now seen corresponding path program 1 times [2022-11-25 18:04:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:33,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056873398] [2022-11-25 18:04:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:33,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:04:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:04:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:33,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056873398] [2022-11-25 18:04:33,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056873398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:33,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655200368] [2022-11-25 18:04:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:33,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:33,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:33,757 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:33,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 18:04:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:34,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:04:34,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:04:34,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:34,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655200368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:34,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:34,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-25 18:04:34,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669614408] [2022-11-25 18:04:34,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:34,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:04:34,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:04:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:04:34,344 INFO L87 Difference]: Start difference. First operand 638 states and 1043 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) [2022-11-25 18:04:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:34,574 INFO L93 Difference]: Finished difference Result 1118 states and 1846 transitions. [2022-11-25 18:04:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:04:34,575 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 [2022-11-25 18:04:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:34,581 INFO L225 Difference]: With dead ends: 1118 [2022-11-25 18:04:34,581 INFO L226 Difference]: Without dead ends: 658 [2022-11-25 18:04:34,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:04:34,585 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 177 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6005 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 [2022-11-25 18:04:34,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6005 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-25 18:04:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 638. [2022-11-25 18:04:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 517 states have (on average 1.6595744680851063) internal successors, (858), 540 states have internal predecessors, (858), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1043 transitions. [2022-11-25 18:04:34,613 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1043 transitions. Word has length 112 [2022-11-25 18:04:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:34,614 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1043 transitions. [2022-11-25 18:04:34,614 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) [2022-11-25 18:04:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1043 transitions. [2022-11-25 18:04:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-25 18:04:34,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:34,618 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] [2022-11-25 18:04:34,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 18:04:34,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 399084010, now seen corresponding path program 1 times [2022-11-25 18:04:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254265544] [2022-11-25 18:04:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:04:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:04:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:04:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254265544] [2022-11-25 18:04:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254265544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447588425] [2022-11-25 18:04:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:35,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:35,550 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:35,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 18:04:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:35,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:04:35,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:04:36,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:36,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447588425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:36,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:36,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-25 18:04:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307734596] [2022-11-25 18:04:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:04:36,041 INFO L87 Difference]: Start difference. First operand 638 states and 1043 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) [2022-11-25 18:04:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:36,119 INFO L93 Difference]: Finished difference Result 1170 states and 1931 transitions. [2022-11-25 18:04:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:36,120 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 [2022-11-25 18:04:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:36,125 INFO L225 Difference]: With dead ends: 1170 [2022-11-25 18:04:36,126 INFO L226 Difference]: Without dead ends: 638 [2022-11-25 18:04:36,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:04:36,130 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 23 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2635 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 [2022-11-25 18:04:36,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2635 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-25 18:04:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2022-11-25 18:04:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 517 states have (on average 1.6518375241779497) internal successors, (854), 540 states have internal predecessors, (854), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1039 transitions. [2022-11-25 18:04:36,162 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1039 transitions. Word has length 112 [2022-11-25 18:04:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:36,162 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1039 transitions. [2022-11-25 18:04:36,162 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) [2022-11-25 18:04:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1039 transitions. [2022-11-25 18:04:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 18:04:36,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:36,167 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] [2022-11-25 18:04:36,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:36,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:04:36,377 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -42579029, now seen corresponding path program 1 times [2022-11-25 18:04:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749440375] [2022-11-25 18:04:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:36,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:36,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:04:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 18:04:37,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:37,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749440375] [2022-11-25 18:04:37,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749440375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:37,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64713540] [2022-11-25 18:04:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:37,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:37,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:37,168 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:37,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 18:04:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:37,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:04:37,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:04:37,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:37,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64713540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:37,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:37,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-25 18:04:37,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680180258] [2022-11-25 18:04:37,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:37,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:04:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:04:37,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:04:37,827 INFO L87 Difference]: Start difference. First operand 638 states and 1039 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) [2022-11-25 18:04:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:38,080 INFO L93 Difference]: Finished difference Result 1118 states and 1843 transitions. [2022-11-25 18:04:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:04:38,081 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 [2022-11-25 18:04:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:38,087 INFO L225 Difference]: With dead ends: 1118 [2022-11-25 18:04:38,087 INFO L226 Difference]: Without dead ends: 658 [2022-11-25 18:04:38,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-11-25 18:04:38,093 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 185 mSDsluCounter, 5094 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5962 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 [2022-11-25 18:04:38,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5962 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:04:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-25 18:04:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 638. [2022-11-25 18:04:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 517 states have (on average 1.6518375241779497) internal successors, (854), 540 states have internal predecessors, (854), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1039 transitions. [2022-11-25 18:04:38,130 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1039 transitions. Word has length 113 [2022-11-25 18:04:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:38,131 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1039 transitions. [2022-11-25 18:04:38,131 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) [2022-11-25 18:04:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1039 transitions. [2022-11-25 18:04:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 18:04:38,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:38,137 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] [2022-11-25 18:04:38,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:38,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:04:38,346 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1003802297, now seen corresponding path program 1 times [2022-11-25 18:04:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:38,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191069090] [2022-11-25 18:04:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:04:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 18:04:39,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191069090] [2022-11-25 18:04:39,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191069090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:39,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422342625] [2022-11-25 18:04:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:39,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:39,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:39,105 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:39,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-25 18:04:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:04:39,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:04:39,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:39,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422342625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:39,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:39,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-25 18:04:39,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332243717] [2022-11-25 18:04:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:39,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:39,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:04:39,607 INFO L87 Difference]: Start difference. First operand 638 states and 1039 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) [2022-11-25 18:04:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:39,696 INFO L93 Difference]: Finished difference Result 1226 states and 2013 transitions. [2022-11-25 18:04:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:39,698 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 [2022-11-25 18:04:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:39,702 INFO L225 Difference]: With dead ends: 1226 [2022-11-25 18:04:39,703 INFO L226 Difference]: Without dead ends: 674 [2022-11-25 18:04:39,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:04:39,707 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 38 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2611 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 [2022-11-25 18:04:39,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2611 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-25 18:04:39,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2022-11-25 18:04:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 541 states have (on average 1.6303142329020333) internal successors, (882), 564 states have internal predecessors, (882), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1067 transitions. [2022-11-25 18:04:39,738 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1067 transitions. Word has length 114 [2022-11-25 18:04:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:39,739 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1067 transitions. [2022-11-25 18:04:39,739 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) [2022-11-25 18:04:39,739 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1067 transitions. [2022-11-25 18:04:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 18:04:39,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:39,743 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] [2022-11-25 18:04:39,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:39,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:04:39,952 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1792760933, now seen corresponding path program 1 times [2022-11-25 18:04:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:39,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847709411] [2022-11-25 18:04:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:04:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:04:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:04:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847709411] [2022-11-25 18:04:40,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847709411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:40,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469292520] [2022-11-25 18:04:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:40,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:40,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:40,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:40,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-25 18:04:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:04:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:04:41,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:41,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469292520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:41,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:41,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-25 18:04:41,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978087370] [2022-11-25 18:04:41,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:41,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:04:41,083 INFO L87 Difference]: Start difference. First operand 662 states and 1067 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) [2022-11-25 18:04:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:41,303 INFO L93 Difference]: Finished difference Result 1236 states and 2042 transitions. [2022-11-25 18:04:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:41,303 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 [2022-11-25 18:04:41,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:41,310 INFO L225 Difference]: With dead ends: 1236 [2022-11-25 18:04:41,310 INFO L226 Difference]: Without dead ends: 781 [2022-11-25 18:04:41,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:04:41,315 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 215 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:41,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2782 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:04:41,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-25 18:04:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 664. [2022-11-25 18:04:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 543 states have (on average 1.6279926335174955) internal successors, (884), 566 states have internal predecessors, (884), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-11-25 18:04:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1069 transitions. [2022-11-25 18:04:41,358 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1069 transitions. Word has length 114 [2022-11-25 18:04:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:41,358 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1069 transitions. [2022-11-25 18:04:41,359 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) [2022-11-25 18:04:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1069 transitions. [2022-11-25 18:04:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 18:04:41,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:41,364 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] [2022-11-25 18:04:41,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:41,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:41,579 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2126746652, now seen corresponding path program 1 times [2022-11-25 18:04:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:41,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464247541] [2022-11-25 18:04:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:04:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:04:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:42,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:42,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464247541] [2022-11-25 18:04:42,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464247541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:42,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403067543] [2022-11-25 18:04:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:42,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:42,244 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:42,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 18:04:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:42,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:04:42,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 18:04:43,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:43,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403067543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:43,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:43,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-11-25 18:04:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337304554] [2022-11-25 18:04:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:43,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:04:43,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:04:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:04:43,063 INFO L87 Difference]: Start difference. First operand 664 states and 1069 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) [2022-11-25 18:04:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:48,394 INFO L93 Difference]: Finished difference Result 1964 states and 3283 transitions. [2022-11-25 18:04:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:04:48,395 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 [2022-11-25 18:04:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:48,408 INFO L225 Difference]: With dead ends: 1964 [2022-11-25 18:04:48,408 INFO L226 Difference]: Without dead ends: 1507 [2022-11-25 18:04:48,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:04:48,413 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 3876 mSDsluCounter, 3237 mSDsCounter, 0 mSdLazyCounter, 5820 mSolverCounterSat, 1069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3995 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 6889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 5820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:48,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3995 Valid, 4226 Invalid, 6889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1069 Valid, 5820 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 18:04:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-11-25 18:04:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1342. [2022-11-25 18:04:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1066 states have (on average 1.6313320825515947) internal successors, (1739), 1113 states have internal predecessors, (1739), 218 states have call successors, (218), 44 states have call predecessors, (218), 57 states have return successors, (251), 215 states have call predecessors, (251), 213 states have call successors, (251) [2022-11-25 18:04:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2208 transitions. [2022-11-25 18:04:48,502 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2208 transitions. Word has length 117 [2022-11-25 18:04:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:48,503 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 2208 transitions. [2022-11-25 18:04:48,503 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) [2022-11-25 18:04:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2208 transitions. [2022-11-25 18:04:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 18:04:48,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:48,511 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] [2022-11-25 18:04:48,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:48,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:48,720 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash -774773161, now seen corresponding path program 1 times [2022-11-25 18:04:48,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253586660] [2022-11-25 18:04:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:04:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:04:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 18:04:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:04:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:49,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253586660] [2022-11-25 18:04:49,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253586660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754122399] [2022-11-25 18:04:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:49,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:49,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:49,361 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 18:04:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:49,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:04:49,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:04:49,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:49,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754122399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:49,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:49,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-11-25 18:04:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044947203] [2022-11-25 18:04:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:49,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:04:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:04:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:04:49,869 INFO L87 Difference]: Start difference. First operand 1342 states and 2208 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) [2022-11-25 18:04:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:50,493 INFO L93 Difference]: Finished difference Result 3341 states and 5636 transitions. [2022-11-25 18:04:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:04:50,494 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 [2022-11-25 18:04:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:50,514 INFO L225 Difference]: With dead ends: 3341 [2022-11-25 18:04:50,514 INFO L226 Difference]: Without dead ends: 2318 [2022-11-25 18:04:50,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:04:50,524 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 737 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 4864 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 [2022-11-25 18:04:50,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 4864 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:04:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-11-25 18:04:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2299. [2022-11-25 18:04:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1799 states have (on average 1.6397998888271261) internal successors, (2950), 1880 states have internal predecessors, (2950), 401 states have call successors, (401), 80 states have call predecessors, (401), 98 states have return successors, (472), 400 states have call predecessors, (472), 396 states have call successors, (472) [2022-11-25 18:04:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3823 transitions. [2022-11-25 18:04:50,659 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3823 transitions. Word has length 118 [2022-11-25 18:04:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:50,660 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3823 transitions. [2022-11-25 18:04:50,660 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) [2022-11-25 18:04:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3823 transitions. [2022-11-25 18:04:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 18:04:50,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:50,674 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] [2022-11-25 18:04:50,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:50,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:50,884 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash 112789604, now seen corresponding path program 1 times [2022-11-25 18:04:50,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:50,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185948484] [2022-11-25 18:04:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:50,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:04:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:04:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:04:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:51,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:51,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185948484] [2022-11-25 18:04:51,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185948484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:51,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539809587] [2022-11-25 18:04:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:51,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:51,592 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:51,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-25 18:04:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:52,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:04:52,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:04:52,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:52,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539809587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:52,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:52,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:04:52,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312346792] [2022-11-25 18:04:52,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:52,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:52,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:04:52,084 INFO L87 Difference]: Start difference. First operand 2299 states and 3823 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) [2022-11-25 18:04:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:52,282 INFO L93 Difference]: Finished difference Result 4454 states and 7448 transitions. [2022-11-25 18:04:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:04:52,284 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 [2022-11-25 18:04:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:52,304 INFO L225 Difference]: With dead ends: 4454 [2022-11-25 18:04:52,304 INFO L226 Difference]: Without dead ends: 2353 [2022-11-25 18:04:52,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:52,319 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 39 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2608 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 [2022-11-25 18:04:52,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2608 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2022-11-25 18:04:52,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2320. [2022-11-25 18:04:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 1819 states have (on average 1.639362286970863) internal successors, (2982), 1901 states have internal predecessors, (2982), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-11-25 18:04:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3856 transitions. [2022-11-25 18:04:52,464 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3856 transitions. Word has length 120 [2022-11-25 18:04:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:52,465 INFO L495 AbstractCegarLoop]: Abstraction has 2320 states and 3856 transitions. [2022-11-25 18:04:52,465 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) [2022-11-25 18:04:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3856 transitions. [2022-11-25 18:04:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 18:04:52,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:52,479 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] [2022-11-25 18:04:52,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:52,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:52,689 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:52,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1145465082, now seen corresponding path program 1 times [2022-11-25 18:04:52,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:52,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932722271] [2022-11-25 18:04:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:04:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:04:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:04:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:53,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:53,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932722271] [2022-11-25 18:04:53,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932722271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845115605] [2022-11-25 18:04:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:53,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:53,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:53,403 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:53,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 18:04:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:53,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:04:53,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:04:53,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:53,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845115605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:53,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:53,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-25 18:04:53,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29323400] [2022-11-25 18:04:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:53,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:04:53,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:04:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:04:53,974 INFO L87 Difference]: Start difference. First operand 2320 states and 3856 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) [2022-11-25 18:04:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:54,309 INFO L93 Difference]: Finished difference Result 4384 states and 7328 transitions. [2022-11-25 18:04:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:04:54,310 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 [2022-11-25 18:04:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:54,330 INFO L225 Difference]: With dead ends: 4384 [2022-11-25 18:04:54,331 INFO L226 Difference]: Without dead ends: 2393 [2022-11-25 18:04:54,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:04:54,346 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 175 mSDsluCounter, 5104 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:54,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 5972 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:04:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2022-11-25 18:04:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2320. [2022-11-25 18:04:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 1819 states have (on average 1.638812534359538) internal successors, (2981), 1901 states have internal predecessors, (2981), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-11-25 18:04:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3855 transitions. [2022-11-25 18:04:54,499 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3855 transitions. Word has length 121 [2022-11-25 18:04:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:54,500 INFO L495 AbstractCegarLoop]: Abstraction has 2320 states and 3855 transitions. [2022-11-25 18:04:54,500 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) [2022-11-25 18:04:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3855 transitions. [2022-11-25 18:04:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 18:04:54,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:54,514 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] [2022-11-25 18:04:54,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:54,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 18:04:54,723 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1015959048, now seen corresponding path program 1 times [2022-11-25 18:04:54,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:54,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699652760] [2022-11-25 18:04:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:04:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:04:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:04:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:55,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:55,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699652760] [2022-11-25 18:04:55,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699652760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:55,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370135315] [2022-11-25 18:04:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:55,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:55,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:55,363 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:55,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-25 18:04:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:04:55,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:04:56,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:56,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370135315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:56,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:56,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-25 18:04:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679413669] [2022-11-25 18:04:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:04:56,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:04:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:56,039 INFO L87 Difference]: Start difference. First operand 2320 states and 3855 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) [2022-11-25 18:04:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:56,715 INFO L93 Difference]: Finished difference Result 2533 states and 4209 transitions. [2022-11-25 18:04:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:04:56,719 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 [2022-11-25 18:04:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:56,743 INFO L225 Difference]: With dead ends: 2533 [2022-11-25 18:04:56,743 INFO L226 Difference]: Without dead ends: 2516 [2022-11-25 18:04:56,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:56,747 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 873 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:56,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 2302 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:04:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-11-25 18:04:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2338. [2022-11-25 18:04:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1837 states have (on average 1.632553075666848) internal successors, (2999), 1919 states have internal predecessors, (2999), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-11-25 18:04:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3873 transitions. [2022-11-25 18:04:56,893 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3873 transitions. Word has length 121 [2022-11-25 18:04:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:56,893 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3873 transitions. [2022-11-25 18:04:56,894 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) [2022-11-25 18:04:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3873 transitions. [2022-11-25 18:04:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 18:04:56,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:56,906 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] [2022-11-25 18:04:56,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:57,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 18:04:57,114 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -830416413, now seen corresponding path program 1 times [2022-11-25 18:04:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:57,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904350107] [2022-11-25 18:04:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:04:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:04:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:04:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 18:04:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 18:04:57,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:57,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904350107] [2022-11-25 18:04:57,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904350107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:57,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351612406] [2022-11-25 18:04:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:57,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:57,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:57,839 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:57,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-25 18:04:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:58,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:04:58,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:04:58,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:58,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351612406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:58,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:58,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-25 18:04:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481778737] [2022-11-25 18:04:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:58,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:04:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:58,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:04:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:04:58,311 INFO L87 Difference]: Start difference. First operand 2338 states and 3873 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) [2022-11-25 18:04:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:58,462 INFO L93 Difference]: Finished difference Result 2367 states and 3911 transitions. [2022-11-25 18:04:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:04:58,463 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 [2022-11-25 18:04:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:58,495 INFO L225 Difference]: With dead ends: 2367 [2022-11-25 18:04:58,495 INFO L226 Difference]: Without dead ends: 2350 [2022-11-25 18:04:58,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:04:58,499 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 37 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3522 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 [2022-11-25 18:04:58,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3522 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2022-11-25 18:04:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2338. [2022-11-25 18:04:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1837 states have (on average 1.6292868807838867) internal successors, (2993), 1919 states have internal predecessors, (2993), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-11-25 18:04:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3867 transitions. [2022-11-25 18:04:58,640 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3867 transitions. Word has length 127 [2022-11-25 18:04:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:58,640 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3867 transitions. [2022-11-25 18:04:58,641 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) [2022-11-25 18:04:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3867 transitions. [2022-11-25 18:04:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 18:04:58,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:58,657 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] [2022-11-25 18:04:58,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:58,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 18:04:58,866 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:58,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1974262225, now seen corresponding path program 1 times [2022-11-25 18:04:58,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:58,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706981621] [2022-11-25 18:04:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:58,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:04:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:04:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:04:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:04:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:04:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:04:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:04:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 18:04:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 18:04:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:04:59,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:59,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706981621] [2022-11-25 18:04:59,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706981621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:59,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78520438] [2022-11-25 18:04:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:59,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:59,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:59,576 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:59,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-25 18:05:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:00,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:05:00,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:05:00,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:00,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78520438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:00,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:00,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-25 18:05:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396919482] [2022-11-25 18:05:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:05:00,169 INFO L87 Difference]: Start difference. First operand 2338 states and 3867 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) [2022-11-25 18:05:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:00,404 INFO L93 Difference]: Finished difference Result 4534 states and 7530 transitions. [2022-11-25 18:05:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:05:00,405 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 [2022-11-25 18:05:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:00,426 INFO L225 Difference]: With dead ends: 4534 [2022-11-25 18:05:00,426 INFO L226 Difference]: Without dead ends: 2421 [2022-11-25 18:05:00,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:00,440 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 167 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 5140 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 [2022-11-25 18:05:00,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 5140 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:05:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2022-11-25 18:05:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2338. [2022-11-25 18:05:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1837 states have (on average 1.6292868807838867) internal successors, (2993), 1919 states have internal predecessors, (2993), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-11-25 18:05:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3867 transitions. [2022-11-25 18:05:00,587 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3867 transitions. Word has length 138 [2022-11-25 18:05:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:00,587 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3867 transitions. [2022-11-25 18:05:00,588 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) [2022-11-25 18:05:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3867 transitions. [2022-11-25 18:05:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 18:05:00,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:00,600 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] [2022-11-25 18:05:00,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:00,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 18:05:00,809 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:00,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1016183460, now seen corresponding path program 1 times [2022-11-25 18:05:00,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:00,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765905347] [2022-11-25 18:05:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:00,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:05:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:05:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 18:05:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 18:05:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:05:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:05:01,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:01,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765905347] [2022-11-25 18:05:01,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765905347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:01,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102583657] [2022-11-25 18:05:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:01,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:01,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:01,455 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:01,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-25 18:05:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:05:01,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:05:01,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:01,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102583657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:01,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:01,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-25 18:05:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363063305] [2022-11-25 18:05:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:05:01,912 INFO L87 Difference]: Start difference. First operand 2338 states and 3867 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) [2022-11-25 18:05:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:02,116 INFO L93 Difference]: Finished difference Result 4538 states and 7536 transitions. [2022-11-25 18:05:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:05:02,117 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 [2022-11-25 18:05:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:02,135 INFO L225 Difference]: With dead ends: 4538 [2022-11-25 18:05:02,136 INFO L226 Difference]: Without dead ends: 2168 [2022-11-25 18:05:02,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:02,147 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 11 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2634 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 [2022-11-25 18:05:02,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2634 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:05:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-11-25 18:05:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2168. [2022-11-25 18:05:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1682 states have (on average 1.6361474435196195) internal successors, (2752), 1758 states have internal predecessors, (2752), 396 states have call successors, (396), 77 states have call predecessors, (396), 89 states have return successors, (459), 394 states have call predecessors, (459), 391 states have call successors, (459) [2022-11-25 18:05:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3607 transitions. [2022-11-25 18:05:02,284 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3607 transitions. Word has length 138 [2022-11-25 18:05:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:02,285 INFO L495 AbstractCegarLoop]: Abstraction has 2168 states and 3607 transitions. [2022-11-25 18:05:02,285 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) [2022-11-25 18:05:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3607 transitions. [2022-11-25 18:05:02,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-25 18:05:02,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:02,297 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] [2022-11-25 18:05:02,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 18:05:02,506 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1032862260, now seen corresponding path program 1 times [2022-11-25 18:05:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874409920] [2022-11-25 18:05:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 18:05:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:05:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:05:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:05:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:05:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 18:05:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 18:05:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:05:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:03,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874409920] [2022-11-25 18:05:03,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874409920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:03,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010583933] [2022-11-25 18:05:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:03,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:03,184 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:03,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-25 18:05:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:05:03,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:05:03,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:03,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010583933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:03,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:03,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:05:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620640145] [2022-11-25 18:05:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:03,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:03,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:03,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:05:03,694 INFO L87 Difference]: Start difference. First operand 2168 states and 3607 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) [2022-11-25 18:05:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:03,903 INFO L93 Difference]: Finished difference Result 4305 states and 7180 transitions. [2022-11-25 18:05:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:05:03,904 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 [2022-11-25 18:05:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:03,922 INFO L225 Difference]: With dead ends: 4305 [2022-11-25 18:05:03,922 INFO L226 Difference]: Without dead ends: 2168 [2022-11-25 18:05:03,933 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 [2022-11-25 18:05:03,934 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 176 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2467 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 [2022-11-25 18:05:03,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2467 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:05:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-11-25 18:05:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2168. [2022-11-25 18:05:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1682 states have (on average 1.635552913198573) internal successors, (2751), 1758 states have internal predecessors, (2751), 396 states have call successors, (396), 77 states have call predecessors, (396), 89 states have return successors, (459), 394 states have call predecessors, (459), 391 states have call successors, (459) [2022-11-25 18:05:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3606 transitions. [2022-11-25 18:05:04,107 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3606 transitions. Word has length 140 [2022-11-25 18:05:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:04,108 INFO L495 AbstractCegarLoop]: Abstraction has 2168 states and 3606 transitions. [2022-11-25 18:05:04,108 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) [2022-11-25 18:05:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3606 transitions. [2022-11-25 18:05:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-25 18:05:04,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:04,119 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] [2022-11-25 18:05:04,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 18:05:04,328 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -523435746, now seen corresponding path program 1 times [2022-11-25 18:05:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:04,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334756157] [2022-11-25 18:05:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:05:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:05:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:05:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:05:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:05:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 18:05:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 18:05:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:05:05,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:05,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334756157] [2022-11-25 18:05:05,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334756157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:05,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:05,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 18:05:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139167962] [2022-11-25 18:05:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:05,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 18:05:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 18:05:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:05,218 INFO L87 Difference]: Start difference. First operand 2168 states and 3606 transitions. Second operand has 13 states, 12 states have (on average 8.833333333333334) internal successors, (106), 8 states have internal predecessors, (106), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 18:05:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:18,170 INFO L93 Difference]: Finished difference Result 5634 states and 9727 transitions. [2022-11-25 18:05:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 18:05:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.833333333333334) internal successors, (106), 8 states have internal predecessors, (106), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 141 [2022-11-25 18:05:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:18,202 INFO L225 Difference]: With dead ends: 5634 [2022-11-25 18:05:18,202 INFO L226 Difference]: Without dead ends: 3512 [2022-11-25 18:05:18,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-11-25 18:05:18,216 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 2015 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 7877 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 8454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 7877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:18,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 4775 Invalid, 8454 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [577 Valid, 7877 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-25 18:05:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2022-11-25 18:05:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2248. [2022-11-25 18:05:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1746 states have (on average 1.629438717067583) internal successors, (2845), 1822 states have internal predecessors, (2845), 406 states have call successors, (406), 77 states have call predecessors, (406), 95 states have return successors, (486), 408 states have call predecessors, (486), 401 states have call successors, (486) [2022-11-25 18:05:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3737 transitions. [2022-11-25 18:05:18,920 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3737 transitions. Word has length 141 [2022-11-25 18:05:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:18,920 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 3737 transitions. [2022-11-25 18:05:18,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.833333333333334) internal successors, (106), 8 states have internal predecessors, (106), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 18:05:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3737 transitions. [2022-11-25 18:05:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-25 18:05:18,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:18,931 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] [2022-11-25 18:05:18,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 18:05:18,932 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1271137707, now seen corresponding path program 1 times [2022-11-25 18:05:18,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:18,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48256680] [2022-11-25 18:05:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:18,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:05:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 18:05:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 18:05:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-25 18:05:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:05:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 18:05:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 18:05:19,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:19,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48256680] [2022-11-25 18:05:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48256680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:19,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:19,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941107667] [2022-11-25 18:05:19,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:19,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:19,538 INFO L87 Difference]: Start difference. First operand 2248 states and 3737 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) [2022-11-25 18:05:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:28,472 INFO L93 Difference]: Finished difference Result 3789 states and 6351 transitions. [2022-11-25 18:05:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:28,473 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 [2022-11-25 18:05:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:28,485 INFO L225 Difference]: With dead ends: 3789 [2022-11-25 18:05:28,486 INFO L226 Difference]: Without dead ends: 1555 [2022-11-25 18:05:28,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:05:28,496 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 960 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:28,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1845 Invalid, 3378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [244 Valid, 3134 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-25 18:05:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2022-11-25 18:05:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1039. [2022-11-25 18:05:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 827 states have (on average 1.6239419588875454) internal successors, (1343), 860 states have internal predecessors, (1343), 167 states have call successors, (167), 42 states have call predecessors, (167), 44 states have return successors, (179), 161 states have call predecessors, (179), 162 states have call successors, (179) [2022-11-25 18:05:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1689 transitions. [2022-11-25 18:05:28,888 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1689 transitions. Word has length 145 [2022-11-25 18:05:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:28,888 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1689 transitions. [2022-11-25 18:05:28,888 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) [2022-11-25 18:05:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1689 transitions. [2022-11-25 18:05:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-25 18:05:28,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:28,894 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] [2022-11-25 18:05:28,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 18:05:28,894 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash -829824043, now seen corresponding path program 1 times [2022-11-25 18:05:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:28,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143121472] [2022-11-25 18:05:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:05:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:05:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:05:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 18:05:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 18:05:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:05:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 18:05:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:29,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143121472] [2022-11-25 18:05:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143121472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:29,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023243488] [2022-11-25 18:05:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:29,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:29,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:29,612 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:29,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-25 18:05:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:30,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:05:30,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:05:30,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:30,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023243488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:30,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:30,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-11-25 18:05:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042817938] [2022-11-25 18:05:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:30,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:30,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:30,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:05:30,092 INFO L87 Difference]: Start difference. First operand 1039 states and 1689 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) [2022-11-25 18:05:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:30,815 INFO L93 Difference]: Finished difference Result 2751 states and 4559 transitions. [2022-11-25 18:05:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:30,816 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 [2022-11-25 18:05:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:30,825 INFO L225 Difference]: With dead ends: 2751 [2022-11-25 18:05:30,825 INFO L226 Difference]: Without dead ends: 1829 [2022-11-25 18:05:30,830 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 [2022-11-25 18:05:30,830 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 802 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1707 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 [2022-11-25 18:05:30,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1707 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:05:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2022-11-25 18:05:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1814. [2022-11-25 18:05:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1429 states have (on average 1.6235129461161653) internal successors, (2320), 1487 states have internal predecessors, (2320), 306 states have call successors, (306), 76 states have call predecessors, (306), 78 states have return successors, (339), 299 states have call predecessors, (339), 301 states have call successors, (339) [2022-11-25 18:05:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2965 transitions. [2022-11-25 18:05:31,352 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2965 transitions. Word has length 146 [2022-11-25 18:05:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:31,352 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 2965 transitions. [2022-11-25 18:05:31,353 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) [2022-11-25 18:05:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2965 transitions. [2022-11-25 18:05:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-25 18:05:31,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:31,358 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] [2022-11-25 18:05:31,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:31,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:31,567 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:31,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1981015361, now seen corresponding path program 1 times [2022-11-25 18:05:31,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:31,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945357789] [2022-11-25 18:05:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:31,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:05:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:05:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:05:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:05:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 18:05:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 18:05:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:05:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 18:05:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945357789] [2022-11-25 18:05:32,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945357789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692668675] [2022-11-25 18:05:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:32,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:32,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:32,414 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:32,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-25 18:05:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:05:32,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:05:32,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:32,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692668675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:32,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:32,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-11-25 18:05:32,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475921442] [2022-11-25 18:05:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:32,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:32,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:05:32,888 INFO L87 Difference]: Start difference. First operand 1814 states and 2965 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) [2022-11-25 18:05:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:33,903 INFO L93 Difference]: Finished difference Result 5067 states and 8411 transitions. [2022-11-25 18:05:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:33,904 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 [2022-11-25 18:05:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:33,924 INFO L225 Difference]: With dead ends: 5067 [2022-11-25 18:05:33,924 INFO L226 Difference]: Without dead ends: 3383 [2022-11-25 18:05:33,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:05:33,933 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 863 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1554 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 [2022-11-25 18:05:33,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1554 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:05:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2022-11-25 18:05:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3365. [2022-11-25 18:05:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2634 states have (on average 1.635155656795748) internal successors, (4307), 2746 states have internal predecessors, (4307), 584 states have call successors, (584), 144 states have call predecessors, (584), 146 states have return successors, (672), 572 states have call predecessors, (672), 579 states have call successors, (672) [2022-11-25 18:05:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 5563 transitions. [2022-11-25 18:05:34,868 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 5563 transitions. Word has length 151 [2022-11-25 18:05:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:34,868 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 5563 transitions. [2022-11-25 18:05:34,869 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) [2022-11-25 18:05:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 5563 transitions. [2022-11-25 18:05:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-25 18:05:34,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:34,873 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] [2022-11-25 18:05:34,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:35,082 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:35,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:35,083 INFO L85 PathProgramCache]: Analyzing trace with hash 781961063, now seen corresponding path program 1 times [2022-11-25 18:05:35,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:35,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261410829] [2022-11-25 18:05:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:05:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:05:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:05:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:36,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:05:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 18:05:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:05:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:05:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 18:05:36,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:36,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261410829] [2022-11-25 18:05:36,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261410829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:36,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917735828] [2022-11-25 18:05:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:36,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:36,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:36,050 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:36,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-25 18:05:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:36,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:05:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:05:36,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:36,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917735828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:36,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:36,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-25 18:05:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610138085] [2022-11-25 18:05:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:05:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:05:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:05:36,567 INFO L87 Difference]: Start difference. First operand 3365 states and 5563 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) [2022-11-25 18:05:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:37,633 INFO L93 Difference]: Finished difference Result 6039 states and 10071 transitions. [2022-11-25 18:05:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:05:37,634 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 [2022-11-25 18:05:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:37,652 INFO L225 Difference]: With dead ends: 6039 [2022-11-25 18:05:37,652 INFO L226 Difference]: Without dead ends: 3365 [2022-11-25 18:05:37,662 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 [2022-11-25 18:05:37,663 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 326 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2446 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 [2022-11-25 18:05:37,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2446 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:05:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2022-11-25 18:05:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3365. [2022-11-25 18:05:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2634 states have (on average 1.6287015945330297) internal successors, (4290), 2746 states have internal predecessors, (4290), 584 states have call successors, (584), 144 states have call predecessors, (584), 146 states have return successors, (672), 572 states have call predecessors, (672), 579 states have call successors, (672) [2022-11-25 18:05:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 5546 transitions. [2022-11-25 18:05:38,640 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 5546 transitions. Word has length 154 [2022-11-25 18:05:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:38,640 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 5546 transitions. [2022-11-25 18:05:38,641 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) [2022-11-25 18:05:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 5546 transitions. [2022-11-25 18:05:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 18:05:38,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:38,647 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] [2022-11-25 18:05:38,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:38,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:38,856 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:38,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1483267705, now seen corresponding path program 1 times [2022-11-25 18:05:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:38,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420006476] [2022-11-25 18:05:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:05:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:05:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:05:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:05:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:05:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:05:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-25 18:05:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:05:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 18:05:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 18:05:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 18:05:39,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:39,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420006476] [2022-11-25 18:05:39,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420006476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:39,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:39,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 18:05:39,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18800460] [2022-11-25 18:05:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:39,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:05:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:05:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:05:39,885 INFO L87 Difference]: Start difference. First operand 3365 states and 5546 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) [2022-11-25 18:06:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:02,305 INFO L93 Difference]: Finished difference Result 9018 states and 15887 transitions. [2022-11-25 18:06:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 18:06:02,306 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 [2022-11-25 18:06:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:02,351 INFO L225 Difference]: With dead ends: 9018 [2022-11-25 18:06:02,351 INFO L226 Difference]: Without dead ends: 6477 [2022-11-25 18:06:02,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 18:06:02,365 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 2925 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 7592 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 8592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 7592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:02,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2987 Valid, 3886 Invalid, 8592 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1000 Valid, 7592 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2022-11-25 18:06:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2022-11-25 18:06:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 4520. [2022-11-25 18:06:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 3534 states have (on average 1.617430673457838) internal successors, (5716), 3691 states have internal predecessors, (5716), 767 states have call successors, (767), 191 states have call predecessors, (767), 218 states have return successors, (971), 757 states have call predecessors, (971), 762 states have call successors, (971) [2022-11-25 18:06:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 7454 transitions. [2022-11-25 18:06:03,882 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 7454 transitions. Word has length 156 [2022-11-25 18:06:03,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:03,883 INFO L495 AbstractCegarLoop]: Abstraction has 4520 states and 7454 transitions. [2022-11-25 18:06:03,883 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) [2022-11-25 18:06:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 7454 transitions. [2022-11-25 18:06:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-25 18:06:03,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:03,887 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] [2022-11-25 18:06:03,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 18:06:03,887 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1919000043, now seen corresponding path program 1 times [2022-11-25 18:06:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:03,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734346992] [2022-11-25 18:06:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:03,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:06:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:06:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:06:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:06:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:06:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 18:06:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:06:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:06:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 18:06:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:04,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734346992] [2022-11-25 18:06:04,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734346992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:04,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734126492] [2022-11-25 18:06:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:04,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:04,643 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:04,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-25 18:06:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:06:05,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 18:06:05,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:06:05,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734126492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:05,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:06:05,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-25 18:06:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117057772] [2022-11-25 18:06:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:05,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:06:05,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:06:05,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:06:05,065 INFO L87 Difference]: Start difference. First operand 4520 states and 7454 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) [2022-11-25 18:06:06,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:06,305 INFO L93 Difference]: Finished difference Result 8972 states and 15030 transitions. [2022-11-25 18:06:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:06:06,306 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 [2022-11-25 18:06:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:06,334 INFO L225 Difference]: With dead ends: 8972 [2022-11-25 18:06:06,334 INFO L226 Difference]: Without dead ends: 4570 [2022-11-25 18:06:06,354 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 [2022-11-25 18:06:06,355 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 22 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2479 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 [2022-11-25 18:06:06,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2479 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:06:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2022-11-25 18:06:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4570. [2022-11-25 18:06:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 3574 states have (on average 1.6074426412982652) internal successors, (5745), 3736 states have internal predecessors, (5745), 767 states have call successors, (767), 196 states have call predecessors, (767), 228 states have return successors, (981), 757 states have call predecessors, (981), 762 states have call successors, (981) [2022-11-25 18:06:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 7493 transitions. [2022-11-25 18:06:07,648 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 7493 transitions. Word has length 158 [2022-11-25 18:06:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:07,648 INFO L495 AbstractCegarLoop]: Abstraction has 4570 states and 7493 transitions. [2022-11-25 18:06:07,648 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) [2022-11-25 18:06:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 7493 transitions. [2022-11-25 18:06:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-25 18:06:07,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:07,651 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] [2022-11-25 18:06:07,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-11-25 18:06:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-25 18:06:07,852 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash 788346076, now seen corresponding path program 1 times [2022-11-25 18:06:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:07,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228791893] [2022-11-25 18:06:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:06:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:06:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:06:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:06:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:06:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:06:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:06:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:06:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:06:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:08,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228791893] [2022-11-25 18:06:08,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228791893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:08,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:08,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 18:06:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353857348] [2022-11-25 18:06:08,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:08,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:06:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:06:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:06:08,754 INFO L87 Difference]: Start difference. First operand 4570 states and 7493 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) [2022-11-25 18:06:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:29,053 INFO L93 Difference]: Finished difference Result 10336 states and 17605 transitions. [2022-11-25 18:06:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 18:06:29,053 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 [2022-11-25 18:06:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:29,086 INFO L225 Difference]: With dead ends: 10336 [2022-11-25 18:06:29,086 INFO L226 Difference]: Without dead ends: 6594 [2022-11-25 18:06:29,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-25 18:06:29,099 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3581 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 6399 mSolverCounterSat, 1171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3641 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 7570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1171 IncrementalHoareTripleChecker+Valid, 6399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:29,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3641 Valid, 2895 Invalid, 7570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1171 Valid, 6399 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-25 18:06:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6594 states. [2022-11-25 18:06:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6594 to 4931. [2022-11-25 18:06:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4931 states, 3867 states have (on average 1.5877941556762347) internal successors, (6140), 4028 states have internal predecessors, (6140), 806 states have call successors, (806), 229 states have call predecessors, (806), 257 states have return successors, (1039), 793 states have call predecessors, (1039), 801 states have call successors, (1039) [2022-11-25 18:06:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4931 states to 4931 states and 7985 transitions. [2022-11-25 18:06:30,600 INFO L78 Accepts]: Start accepts. Automaton has 4931 states and 7985 transitions. Word has length 159 [2022-11-25 18:06:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:30,600 INFO L495 AbstractCegarLoop]: Abstraction has 4931 states and 7985 transitions. [2022-11-25 18:06:30,600 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) [2022-11-25 18:06:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4931 states and 7985 transitions. [2022-11-25 18:06:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-25 18:06:30,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:30,603 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] [2022-11-25 18:06:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 18:06:30,604 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash 574028592, now seen corresponding path program 1 times [2022-11-25 18:06:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:30,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047367230] [2022-11-25 18:06:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:30,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:06:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:06:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:06:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:06:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:06:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:06:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-25 18:06:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 18:06:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:06:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:06:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:06:31,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:31,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047367230] [2022-11-25 18:06:31,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047367230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:31,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847379468] [2022-11-25 18:06:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:31,451 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:31,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-25 18:06:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:06:31,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 18:06:31,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:06:31,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847379468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:31,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:06:31,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-11-25 18:06:31,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467430695] [2022-11-25 18:06:31,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:06:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:06:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:06:31,914 INFO L87 Difference]: Start difference. First operand 4931 states and 7985 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:06:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:33,796 INFO L93 Difference]: Finished difference Result 11185 states and 18201 transitions. [2022-11-25 18:06:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:06:33,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2022-11-25 18:06:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:33,834 INFO L225 Difference]: With dead ends: 11185 [2022-11-25 18:06:33,834 INFO L226 Difference]: Without dead ends: 7091 [2022-11-25 18:06:33,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:06:33,846 INFO L413 NwaCegarLoop]: 1488 mSDtfsCounter, 749 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:33,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 2348 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:06:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2022-11-25 18:06:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 6999. [2022-11-25 18:06:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 5498 states have (on average 1.5862131684248817) internal successors, (8721), 5725 states have internal predecessors, (8721), 1131 states have call successors, (1131), 319 states have call predecessors, (1131), 369 states have return successors, (1474), 1122 states have call predecessors, (1474), 1126 states have call successors, (1474) [2022-11-25 18:06:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 11326 transitions. [2022-11-25 18:06:35,739 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 11326 transitions. Word has length 166 [2022-11-25 18:06:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:35,739 INFO L495 AbstractCegarLoop]: Abstraction has 6999 states and 11326 transitions. [2022-11-25 18:06:35,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:06:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 11326 transitions. [2022-11-25 18:06:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-25 18:06:35,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:35,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 18:06:35,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-11-25 18:06:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-25 18:06:35,943 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1829549014, now seen corresponding path program 1 times [2022-11-25 18:06:35,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:35,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046877105] [2022-11-25 18:06:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:35,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:06:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:06:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:06:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:06:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:06:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:06:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 18:06:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:06:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 18:06:37,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:37,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046877105] [2022-11-25 18:06:37,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046877105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:37,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28992784] [2022-11-25 18:06:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:37,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:37,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:37,147 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:37,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-25 18:06:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:37,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:06:37,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 18:06:37,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:06:37,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28992784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:37,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:06:37,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-25 18:06:37,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864898293] [2022-11-25 18:06:37,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:37,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:06:37,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:06:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:06:37,620 INFO L87 Difference]: Start difference. First operand 6999 states and 11326 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 18:06:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:40,020 INFO L93 Difference]: Finished difference Result 7354 states and 11911 transitions. [2022-11-25 18:06:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:06:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 164 [2022-11-25 18:06:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:40,066 INFO L225 Difference]: With dead ends: 7354 [2022-11-25 18:06:40,066 INFO L226 Difference]: Without dead ends: 7339 [2022-11-25 18:06:40,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:06:40,071 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 67 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:40,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3556 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:06:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2022-11-25 18:06:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 7041. [2022-11-25 18:06:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7041 states, 5540 states have (on average 1.581768953068592) internal successors, (8763), 5767 states have internal predecessors, (8763), 1131 states have call successors, (1131), 319 states have call predecessors, (1131), 369 states have return successors, (1474), 1122 states have call predecessors, (1474), 1126 states have call successors, (1474) [2022-11-25 18:06:42,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 11368 transitions. [2022-11-25 18:06:42,027 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 11368 transitions. Word has length 164 [2022-11-25 18:06:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:42,027 INFO L495 AbstractCegarLoop]: Abstraction has 7041 states and 11368 transitions. [2022-11-25 18:06:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 18:06:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 11368 transitions. [2022-11-25 18:06:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-25 18:06:42,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:42,038 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:42,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-11-25 18:06:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-25 18:06:42,248 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash -541536223, now seen corresponding path program 1 times [2022-11-25 18:06:42,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:42,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43946265] [2022-11-25 18:06:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:42,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:06:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:06:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:06:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:06:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:06:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:06:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:06:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:06:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 18:06:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:06:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:06:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 18:06:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:06:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 18:06:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 18:06:43,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:43,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43946265] [2022-11-25 18:06:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43946265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:06:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596959256] [2022-11-25 18:06:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:43,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:06:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:43,457 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:06:43,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-25 18:06:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:06:43,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:06:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-25 18:06:44,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:06:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-25 18:06:45,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596959256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:06:45,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:06:45,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 8] total 27 [2022-11-25 18:06:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760487540] [2022-11-25 18:06:45,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:06:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 18:06:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 18:06:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-11-25 18:06:45,370 INFO L87 Difference]: Start difference. First operand 7041 states and 11368 transitions. Second operand has 27 states, 27 states have (on average 10.592592592592593) internal successors, (286), 20 states have internal predecessors, (286), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-11-25 18:07:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:50,357 INFO L93 Difference]: Finished difference Result 42492 states and 77773 transitions. [2022-11-25 18:07:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-25 18:07:50,358 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.592592592592593) internal successors, (286), 20 states have internal predecessors, (286), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) Word has length 201 [2022-11-25 18:07:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:50,774 INFO L225 Difference]: With dead ends: 42492 [2022-11-25 18:07:50,775 INFO L226 Difference]: Without dead ends: 35557 [2022-11-25 18:07:50,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 447 SyntacticMatches, 5 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4407 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1803, Invalid=12239, Unknown=0, NotChecked=0, Total=14042 [2022-11-25 18:07:50,864 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 8380 mSDsluCounter, 14702 mSDsCounter, 0 mSdLazyCounter, 37299 mSolverCounterSat, 4765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8394 SdHoareTripleChecker+Valid, 16080 SdHoareTripleChecker+Invalid, 42064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 4765 IncrementalHoareTripleChecker+Valid, 37299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:50,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8394 Valid, 16080 Invalid, 42064 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [4765 Valid, 37299 Invalid, 0 Unknown, 0 Unchecked, 37.3s Time] [2022-11-25 18:07:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35557 states. [2022-11-25 18:07:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35557 to 23667. [2022-11-25 18:07:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23667 states, 18110 states have (on average 1.5643290999447819) internal successors, (28330), 18955 states have internal predecessors, (28330), 4311 states have call successors, (4311), 913 states have call predecessors, (4311), 1245 states have return successors, (6692), 4408 states have call predecessors, (6692), 4306 states have call successors, (6692) [2022-11-25 18:07:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23667 states to 23667 states and 39333 transitions. [2022-11-25 18:07:58,446 INFO L78 Accepts]: Start accepts. Automaton has 23667 states and 39333 transitions. Word has length 201 [2022-11-25 18:07:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:58,447 INFO L495 AbstractCegarLoop]: Abstraction has 23667 states and 39333 transitions. [2022-11-25 18:07:58,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.592592592592593) internal successors, (286), 20 states have internal predecessors, (286), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-11-25 18:07:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 23667 states and 39333 transitions. [2022-11-25 18:07:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-25 18:07:58,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:58,491 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:58,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-25 18:07:58,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:07:58,700 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash -430460630, now seen corresponding path program 1 times [2022-11-25 18:07:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:58,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126963532] [2022-11-25 18:07:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:07:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:07:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:07:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:07:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:07:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:07:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:07:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:07:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:07:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:07:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:07:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:07:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:07:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:07:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 18:07:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:07:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:07:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 18:07:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:07:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 18:07:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-25 18:07:59,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126963532] [2022-11-25 18:07:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126963532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:07:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198454515] [2022-11-25 18:07:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:59,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:07:59,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:07:59,369 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:07:59,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-25 18:07:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:59,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:07:59,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:07:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-25 18:07:59,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:07:59,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198454515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:59,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:07:59,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:07:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285413212] [2022-11-25 18:07:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:07:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:07:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:07:59,848 INFO L87 Difference]: Start difference. First operand 23667 states and 39333 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 18:08:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:08,419 INFO L93 Difference]: Finished difference Result 47838 states and 80083 transitions. [2022-11-25 18:08:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:08:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 202 [2022-11-25 18:08:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:08,571 INFO L225 Difference]: With dead ends: 47838 [2022-11-25 18:08:08,571 INFO L226 Difference]: Without dead ends: 24355 [2022-11-25 18:08:08,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:08:08,673 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 17 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:08,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2480 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:08:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24355 states. [2022-11-25 18:08:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24355 to 23931. [2022-11-25 18:08:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23931 states, 18349 states have (on average 1.5631914545751813) internal successors, (28683), 19213 states have internal predecessors, (28683), 4269 states have call successors, (4269), 964 states have call predecessors, (4269), 1312 states have return successors, (6509), 4363 states have call predecessors, (6509), 4264 states have call successors, (6509) [2022-11-25 18:08:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23931 states to 23931 states and 39461 transitions. [2022-11-25 18:08:17,036 INFO L78 Accepts]: Start accepts. Automaton has 23931 states and 39461 transitions. Word has length 202 [2022-11-25 18:08:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:17,037 INFO L495 AbstractCegarLoop]: Abstraction has 23931 states and 39461 transitions. [2022-11-25 18:08:17,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 18:08:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 23931 states and 39461 transitions. [2022-11-25 18:08:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-25 18:08:17,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:17,067 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:17,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-11-25 18:08:17,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-25 18:08:17,268 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 825298259, now seen corresponding path program 1 times [2022-11-25 18:08:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:17,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419941256] [2022-11-25 18:08:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:08:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:08:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:08:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 18:08:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:08:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:08:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:08:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:08:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:08:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:08:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:08:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:08:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-25 18:08:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 18:08:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:08:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:08:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:08:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:08:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 18:08:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:08:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 18:08:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-25 18:08:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419941256] [2022-11-25 18:08:18,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419941256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332459307] [2022-11-25 18:08:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:18,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:18,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:18,109 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:08:18,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770fa8bc-6bd4-468b-a21a-b67a1f323f45/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-25 18:08:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:18,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:08:18,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:08:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-25 18:08:18,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:08:18,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332459307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:18,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:08:18,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-25 18:08:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688726111] [2022-11-25 18:08:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:08:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:08:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:08:18,612 INFO L87 Difference]: Start difference. First operand 23931 states and 39461 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 18:08:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:26,327 INFO L93 Difference]: Finished difference Result 38831 states and 63844 transitions. [2022-11-25 18:08:26,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:08:26,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 205 [2022-11-25 18:08:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:26,531 INFO L225 Difference]: With dead ends: 38831 [2022-11-25 18:08:26,532 INFO L226 Difference]: Without dead ends: 23988 [2022-11-25 18:08:26,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:08:26,606 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 85 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:26,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2518 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:08:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23988 states.