./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ --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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- 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-dbf71c6-m [2022-10-17 10:57:04,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:04,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:04,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:04,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:04,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:04,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:04,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:04,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:04,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:04,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:04,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:04,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:04,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:04,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:04,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:04,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:04,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:04,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:04,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:04,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:04,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:04,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:04,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:04,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:04,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:04,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:04,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:04,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:04,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:04,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:04,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:04,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:04,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:04,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:04,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:04,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:04,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:04,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:04,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:04,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:04,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:57:04,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:04,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:04,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:04,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:04,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:57:04,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:57:04,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:04,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:04,486 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:04,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:04,486 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:04,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:04,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:04,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:04,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:57:04,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:57:04,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:57:04,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:04,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:57:04,488 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:04,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:57:04,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:04,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:04,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:57:04,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:04,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:04,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:57:04,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:57:04,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:57:04,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:57:04,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:57:04,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:57:04,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:57:04,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2022-10-17 10:57:04,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:04,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:04,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:04,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:04,775 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:04,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2022-10-17 10:57:04,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/data/5cd01dcfa/0ec6f271bbda4a46a3688a2ea9f12572/FLAG72a97554f [2022-10-17 10:57:05,410 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:05,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2022-10-17 10:57:05,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/data/5cd01dcfa/0ec6f271bbda4a46a3688a2ea9f12572/FLAG72a97554f [2022-10-17 10:57:05,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/data/5cd01dcfa/0ec6f271bbda4a46a3688a2ea9f12572 [2022-10-17 10:57:05,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:05,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:05,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:05,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:05,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:05,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:05" (1/1) ... [2022-10-17 10:57:05,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9ab44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:05, skipping insertion in model container [2022-10-17 10:57:05,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:05" (1/1) ... [2022-10-17 10:57:05,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:05,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:06,177 WARN L230 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_1bb829b2-76ee-4436-87e9-cf40c71a6976/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2022-10-17 10:57:06,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:06,266 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:57:06,423 WARN L230 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_1bb829b2-76ee-4436-87e9-cf40c71a6976/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2022-10-17 10:57:06,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:06,499 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:57:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06 WrapperNode [2022-10-17 10:57:06,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:06,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:06,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:57:06,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:57:06,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,621 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 862 [2022-10-17 10:57:06,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:06,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:57:06,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:57:06,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:57:06,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,719 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:57:06,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:57:06,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:57:06,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:57:06,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (1/1) ... [2022-10-17 10:57:06,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:06,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:06,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:57:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-10-17 10:57:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-10-17 10:57:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:57:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-10-17 10:57:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-10-17 10:57:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-10-17 10:57:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-10-17 10:57:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-10-17 10:57:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-10-17 10:57:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-10-17 10:57:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-10-17 10:57:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-10-17 10:57:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-10-17 10:57:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-10-17 10:57:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-10-17 10:57:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-10-17 10:57:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-10-17 10:57:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-10-17 10:57:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-10-17 10:57:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 10:57:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 10:57:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 10:57:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 10:57:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 10:57:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 10:57:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-10-17 10:57:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-10-17 10:57:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-10-17 10:57:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-10-17 10:57:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-10-17 10:57:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-10-17 10:57:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-10-17 10:57:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-10-17 10:57:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-10-17 10:57:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-10-17 10:57:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-10-17 10:57:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-10-17 10:57:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-10-17 10:57:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-10-17 10:57:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-10-17 10:57:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-10-17 10:57:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:57:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-10-17 10:57:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-10-17 10:57:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-10-17 10:57:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-10-17 10:57:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-10-17 10:57:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-10-17 10:57:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-10-17 10:57:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-10-17 10:57:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:57:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:57:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-10-17 10:57:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-10-17 10:57:07,069 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:57:07,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:57:08,462 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:57:08,477 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:57:08,477 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:57:08,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:08 BoogieIcfgContainer [2022-10-17 10:57:08,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:57:08,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:57:08,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:57:08,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:57:08,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:57:05" (1/3) ... [2022-10-17 10:57:08,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231dc22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:57:08, skipping insertion in model container [2022-10-17 10:57:08,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:06" (2/3) ... [2022-10-17 10:57:08,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231dc22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:57:08, skipping insertion in model container [2022-10-17 10:57:08,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:08" (3/3) ... [2022-10-17 10:57:08,490 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2022-10-17 10:57:08,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:57:08,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:57:08,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:57:08,604 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;@17612be9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:57:08,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:57:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 601 states, 474 states have (on average 1.6940928270042195) internal successors, (803), 492 states have internal predecessors, (803), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-10-17 10:57:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:57:08,657 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:08,658 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] [2022-10-17 10:57:08,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1730037928, now seen corresponding path program 1 times [2022-10-17 10:57:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:08,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147372516] [2022-10-17 10:57:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:57:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:57:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:57:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:57:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:57:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:57:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:57:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:57:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:57:09,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147372516] [2022-10-17 10:57:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147372516] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139413480] [2022-10-17 10:57:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:09,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:09,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:57:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:57:10,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:57:10,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:10,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139413480] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:10,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:10,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-10-17 10:57:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206532922] [2022-10-17 10:57:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:10,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:57:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:57:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:10,347 INFO L87 Difference]: Start difference. First operand has 601 states, 474 states have (on average 1.6940928270042195) internal successors, (803), 492 states have internal predecessors, (803), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:10,517 INFO L93 Difference]: Finished difference Result 1180 states and 1989 transitions. [2022-10-17 10:57:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:57:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-10-17 10:57:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:10,545 INFO L225 Difference]: With dead ends: 1180 [2022-10-17 10:57:10,553 INFO L226 Difference]: Without dead ends: 591 [2022-10-17 10:57:10,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:10,576 INFO L413 NwaCegarLoop]: 991 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, 991 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 [2022-10-17 10:57:10,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-10-17 10:57:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-10-17 10:57:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 467 states have (on average 1.676659528907923) internal successors, (783), 483 states have internal predecessors, (783), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-10-17 10:57:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 980 transitions. [2022-10-17 10:57:10,737 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 980 transitions. Word has length 114 [2022-10-17 10:57:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:10,742 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 980 transitions. [2022-10-17 10:57:10,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 980 transitions. [2022-10-17 10:57:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:57:10,758 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:10,759 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] [2022-10-17 10:57:10,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:10,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -923073288, now seen corresponding path program 1 times [2022-10-17 10:57:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423918071] [2022-10-17 10:57:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:10,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:57:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:57:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:57:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:57:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:57:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:57:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:57:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:57:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:57:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:11,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423918071] [2022-10-17 10:57:11,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423918071] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:11,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290452799] [2022-10-17 10:57:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:11,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:11,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:11,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:11,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:57:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:11,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:57:11,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:11,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290452799] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:11,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:11,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-10-17 10:57:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640118777] [2022-10-17 10:57:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:57:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:57:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:11,815 INFO L87 Difference]: Start difference. First operand 591 states and 980 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:11,950 INFO L93 Difference]: Finished difference Result 1728 states and 2911 transitions. [2022-10-17 10:57:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:57:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-10-17 10:57:11,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:11,963 INFO L225 Difference]: With dead ends: 1728 [2022-10-17 10:57:11,963 INFO L226 Difference]: Without dead ends: 1157 [2022-10-17 10:57:11,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:11,970 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 979 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:11,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 2074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-10-17 10:57:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1148. [2022-10-17 10:57:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 914 states have (on average 1.687089715536105) internal successors, (1542), 943 states have internal predecessors, (1542), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-10-17 10:57:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1926 transitions. [2022-10-17 10:57:12,066 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1926 transitions. Word has length 114 [2022-10-17 10:57:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:12,066 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1926 transitions. [2022-10-17 10:57:12,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1926 transitions. [2022-10-17 10:57:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:57:12,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:12,074 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] [2022-10-17 10:57:12,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:12,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-17 10:57:12,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1197832902, now seen corresponding path program 1 times [2022-10-17 10:57:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:12,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477129268] [2022-10-17 10:57:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:12,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:57:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:57:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:57:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:57:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:57:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:57:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:57:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:57:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:57:12,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:12,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477129268] [2022-10-17 10:57:12,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477129268] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199322307] [2022-10-17 10:57:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:12,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:12,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:12,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:12,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:57:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:13,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:13,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:13,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199322307] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:13,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:13,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-17 10:57:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921954985] [2022-10-17 10:57:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:13,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:13,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:57:13,117 INFO L87 Difference]: Start difference. First operand 1148 states and 1926 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:13,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:13,285 INFO L93 Difference]: Finished difference Result 2297 states and 3860 transitions. [2022-10-17 10:57:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:13,285 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-10-17 10:57:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:13,296 INFO L225 Difference]: With dead ends: 2297 [2022-10-17 10:57:13,296 INFO L226 Difference]: Without dead ends: 1157 [2022-10-17 10:57:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:13,308 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 26 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:13,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2886 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-10-17 10:57:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2022-10-17 10:57:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 922 states have (on average 1.6876355748373102) internal successors, (1556), 951 states have internal predecessors, (1556), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-10-17 10:57:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1940 transitions. [2022-10-17 10:57:13,400 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1940 transitions. Word has length 114 [2022-10-17 10:57:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:13,400 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1940 transitions. [2022-10-17 10:57:13,401 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1940 transitions. [2022-10-17 10:57:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 10:57:13,407 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:13,407 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:57:13,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:13,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:13,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:13,608 INFO L85 PathProgramCache]: Analyzing trace with hash 729231484, now seen corresponding path program 1 times [2022-10-17 10:57:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:13,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029727733] [2022-10-17 10:57:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:13,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:57:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 10:57:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:57:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:57:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:57:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:57:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:57:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:57:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:14,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:14,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029727733] [2022-10-17 10:57:14,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029727733] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151391268] [2022-10-17 10:57:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:14,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:14,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:57:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:14,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:14,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:14,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151391268] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:14,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:14,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-10-17 10:57:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590134404] [2022-10-17 10:57:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:14,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:57:14,429 INFO L87 Difference]: Start difference. First operand 1157 states and 1940 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:14,710 INFO L93 Difference]: Finished difference Result 2349 states and 3955 transitions. [2022-10-17 10:57:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:14,711 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-10-17 10:57:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:14,721 INFO L225 Difference]: With dead ends: 2349 [2022-10-17 10:57:14,721 INFO L226 Difference]: Without dead ends: 1202 [2022-10-17 10:57:14,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:57:14,733 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 170 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:14,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2730 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:57:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-10-17 10:57:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2022-10-17 10:57:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 966 states have (on average 1.6977225672877847) internal successors, (1640), 995 states have internal predecessors, (1640), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-10-17 10:57:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 2024 transitions. [2022-10-17 10:57:14,811 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 2024 transitions. Word has length 116 [2022-10-17 10:57:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:14,812 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 2024 transitions. [2022-10-17 10:57:14,812 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 2024 transitions. [2022-10-17 10:57:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:57:14,819 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:14,819 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] [2022-10-17 10:57:14,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:15,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash 515995424, now seen corresponding path program 1 times [2022-10-17 10:57:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:15,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204366821] [2022-10-17 10:57:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:57:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-17 10:57:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:57:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:57:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:57:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:57:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:57:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:57:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-17 10:57:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:15,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204366821] [2022-10-17 10:57:15,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204366821] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:15,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997595852] [2022-10-17 10:57:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:15,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:15,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:15,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:57:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:15,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:15,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:15,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997595852] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:15,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:15,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-17 10:57:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899290180] [2022-10-17 10:57:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:15,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:57:15,879 INFO L87 Difference]: Start difference. First operand 1202 states and 2024 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:16,057 INFO L93 Difference]: Finished difference Result 2443 states and 4117 transitions. [2022-10-17 10:57:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:16,058 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2022-10-17 10:57:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:16,071 INFO L225 Difference]: With dead ends: 2443 [2022-10-17 10:57:16,071 INFO L226 Difference]: Without dead ends: 1251 [2022-10-17 10:57:16,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:16,081 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 118 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 5731 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:16,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 5731 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-10-17 10:57:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1215. [2022-10-17 10:57:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 976 states have (on average 1.6956967213114753) internal successors, (1655), 1007 states have internal predecessors, (1655), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2022-10-17 10:57:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2045 transitions. [2022-10-17 10:57:16,155 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2045 transitions. Word has length 118 [2022-10-17 10:57:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:16,156 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2045 transitions. [2022-10-17 10:57:16,156 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2045 transitions. [2022-10-17 10:57:16,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-17 10:57:16,162 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:16,163 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] [2022-10-17 10:57:16,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:16,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:16,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -735032133, now seen corresponding path program 1 times [2022-10-17 10:57:16,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:16,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053061517] [2022-10-17 10:57:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:16,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:57:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:57:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:57:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:57:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:57:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:57:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:57:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 10:57:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:16,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053061517] [2022-10-17 10:57:16,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053061517] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:16,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514045002] [2022-10-17 10:57:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:16,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:16,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:16,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:57:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:17,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:17,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:17,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514045002] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:17,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:17,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-17 10:57:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473067943] [2022-10-17 10:57:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:57:17,188 INFO L87 Difference]: Start difference. First operand 1215 states and 2045 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:17,409 INFO L93 Difference]: Finished difference Result 2463 states and 4148 transitions. [2022-10-17 10:57:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:17,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-10-17 10:57:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:17,423 INFO L225 Difference]: With dead ends: 2463 [2022-10-17 10:57:17,423 INFO L226 Difference]: Without dead ends: 1260 [2022-10-17 10:57:17,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:17,435 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 129 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5713 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:17,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5713 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-10-17 10:57:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1215. [2022-10-17 10:57:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 976 states have (on average 1.6956967213114753) internal successors, (1655), 1007 states have internal predecessors, (1655), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2022-10-17 10:57:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2045 transitions. [2022-10-17 10:57:17,510 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2045 transitions. Word has length 119 [2022-10-17 10:57:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:17,511 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2045 transitions. [2022-10-17 10:57:17,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2045 transitions. [2022-10-17 10:57:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-17 10:57:17,520 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:17,520 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:57:17,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:57:17,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash -698967231, now seen corresponding path program 1 times [2022-10-17 10:57:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:17,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092611387] [2022-10-17 10:57:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:17,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:57:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:57:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:57:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:57:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:57:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:57:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:57:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:57:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 10:57:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-17 10:57:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092611387] [2022-10-17 10:57:18,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092611387] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873661171] [2022-10-17 10:57:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:18,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:18,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:18,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:18,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:57:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:18,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:57:18,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:18,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873661171] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:18,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:18,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-10-17 10:57:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650935907] [2022-10-17 10:57:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:18,376 INFO L87 Difference]: Start difference. First operand 1215 states and 2045 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:18,507 INFO L93 Difference]: Finished difference Result 2435 states and 4099 transitions. [2022-10-17 10:57:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:18,508 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-10-17 10:57:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:18,520 INFO L225 Difference]: With dead ends: 2435 [2022-10-17 10:57:18,521 INFO L226 Difference]: Without dead ends: 1226 [2022-10-17 10:57:18,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:57:18,531 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 20 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:18,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2887 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-10-17 10:57:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1224. [2022-10-17 10:57:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 984 states have (on average 1.6869918699186992) internal successors, (1660), 1015 states have internal predecessors, (1660), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-10-17 10:57:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2049 transitions. [2022-10-17 10:57:18,598 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2049 transitions. Word has length 119 [2022-10-17 10:57:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:18,598 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2049 transitions. [2022-10-17 10:57:18,598 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2049 transitions. [2022-10-17 10:57:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-17 10:57:18,605 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:18,605 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] [2022-10-17 10:57:18,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:18,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:18,831 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1066977316, now seen corresponding path program 1 times [2022-10-17 10:57:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:18,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601222104] [2022-10-17 10:57:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 10:57:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:57:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:57:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:57:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:57:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:57:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:57:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 10:57:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:19,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:19,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601222104] [2022-10-17 10:57:19,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601222104] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:19,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97877349] [2022-10-17 10:57:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:19,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:19,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:19,232 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:19,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:57:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:19,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:19,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:19,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97877349] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:19,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:19,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-17 10:57:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108260763] [2022-10-17 10:57:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:57:19,609 INFO L87 Difference]: Start difference. First operand 1224 states and 2049 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:19,777 INFO L93 Difference]: Finished difference Result 2472 states and 4143 transitions. [2022-10-17 10:57:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:19,778 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-10-17 10:57:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:19,790 INFO L225 Difference]: With dead ends: 2472 [2022-10-17 10:57:19,790 INFO L226 Difference]: Without dead ends: 1271 [2022-10-17 10:57:19,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:19,800 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 140 mSDsluCounter, 4714 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 5684 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:19,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 5684 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:19,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-10-17 10:57:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1224. [2022-10-17 10:57:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 984 states have (on average 1.6869918699186992) internal successors, (1660), 1015 states have internal predecessors, (1660), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-10-17 10:57:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2049 transitions. [2022-10-17 10:57:19,875 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2049 transitions. Word has length 120 [2022-10-17 10:57:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:19,875 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2049 transitions. [2022-10-17 10:57:19,876 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2049 transitions. [2022-10-17 10:57:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-17 10:57:19,882 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:19,882 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] [2022-10-17 10:57:19,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:20,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -994986854, now seen corresponding path program 1 times [2022-10-17 10:57:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:20,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993237200] [2022-10-17 10:57:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 10:57:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:57:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:57:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:57:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:57:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:57:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:57:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 10:57:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:20,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993237200] [2022-10-17 10:57:20,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993237200] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326886539] [2022-10-17 10:57:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:20,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:20,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:20,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:20,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:57:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:20,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:20,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326886539] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:20,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:20,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-17 10:57:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617529967] [2022-10-17 10:57:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:20,967 INFO L87 Difference]: Start difference. First operand 1224 states and 2049 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:21,203 INFO L93 Difference]: Finished difference Result 2475 states and 4147 transitions. [2022-10-17 10:57:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:21,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-10-17 10:57:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:21,215 INFO L225 Difference]: With dead ends: 2475 [2022-10-17 10:57:21,215 INFO L226 Difference]: Without dead ends: 1274 [2022-10-17 10:57:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:57:21,224 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 140 mSDsluCounter, 5652 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6612 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:21,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6612 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-10-17 10:57:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1224. [2022-10-17 10:57:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 984 states have (on average 1.6869918699186992) internal successors, (1660), 1015 states have internal predecessors, (1660), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-10-17 10:57:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2049 transitions. [2022-10-17 10:57:21,328 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2049 transitions. Word has length 120 [2022-10-17 10:57:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2049 transitions. [2022-10-17 10:57:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2049 transitions. [2022-10-17 10:57:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:57:21,335 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:21,336 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] [2022-10-17 10:57:21,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:21,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:21,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1308705207, now seen corresponding path program 1 times [2022-10-17 10:57:21,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:21,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223523749] [2022-10-17 10:57:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:57:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:57:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:57:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:57:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:57:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:57:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:57:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 10:57:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223523749] [2022-10-17 10:57:21,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223523749] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468184002] [2022-10-17 10:57:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:21,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:21,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:21,921 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:21,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:57:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:22,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:22,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:22,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468184002] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:22,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:22,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-17 10:57:22,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58591236] [2022-10-17 10:57:22,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:22,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:22,331 INFO L87 Difference]: Start difference. First operand 1224 states and 2049 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:22,583 INFO L93 Difference]: Finished difference Result 2475 states and 4147 transitions. [2022-10-17 10:57:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:22,584 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-10-17 10:57:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:22,595 INFO L225 Difference]: With dead ends: 2475 [2022-10-17 10:57:22,595 INFO L226 Difference]: Without dead ends: 1274 [2022-10-17 10:57:22,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:57:22,604 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 150 mSDsluCounter, 5640 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6600 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:22,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6600 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-10-17 10:57:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1224. [2022-10-17 10:57:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 984 states have (on average 1.6869918699186992) internal successors, (1660), 1015 states have internal predecessors, (1660), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-10-17 10:57:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2049 transitions. [2022-10-17 10:57:22,671 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2049 transitions. Word has length 121 [2022-10-17 10:57:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:22,672 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2049 transitions. [2022-10-17 10:57:22,672 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2049 transitions. [2022-10-17 10:57:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 10:57:22,678 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:22,678 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] [2022-10-17 10:57:22,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:22,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash -762325803, now seen corresponding path program 1 times [2022-10-17 10:57:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:22,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950498032] [2022-10-17 10:57:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:57:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:57:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:57:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:57:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:57:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:57:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:57:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:23,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950498032] [2022-10-17 10:57:23,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950498032] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:23,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944256010] [2022-10-17 10:57:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:23,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:23,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:57:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:23,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:23,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:23,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944256010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:23,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:23,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-17 10:57:23,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954105041] [2022-10-17 10:57:23,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:23,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:23,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:23,635 INFO L87 Difference]: Start difference. First operand 1224 states and 2049 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:23,873 INFO L93 Difference]: Finished difference Result 2466 states and 4132 transitions. [2022-10-17 10:57:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:23,873 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2022-10-17 10:57:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:23,885 INFO L225 Difference]: With dead ends: 2466 [2022-10-17 10:57:23,885 INFO L226 Difference]: Without dead ends: 1265 [2022-10-17 10:57:23,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:57:23,894 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 160 mSDsluCounter, 5628 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:23,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6588 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-10-17 10:57:23,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1224. [2022-10-17 10:57:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 984 states have (on average 1.6869918699186992) internal successors, (1660), 1015 states have internal predecessors, (1660), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-10-17 10:57:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2049 transitions. [2022-10-17 10:57:23,957 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2049 transitions. Word has length 122 [2022-10-17 10:57:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:23,957 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2049 transitions. [2022-10-17 10:57:23,958 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2049 transitions. [2022-10-17 10:57:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 10:57:23,963 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:23,964 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:57:24,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 10:57:24,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -86940745, now seen corresponding path program 1 times [2022-10-17 10:57:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:24,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689294690] [2022-10-17 10:57:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:57:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:57:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:57:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:57:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:57:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:57:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:57:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-17 10:57:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:24,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689294690] [2022-10-17 10:57:24,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689294690] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:24,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895114090] [2022-10-17 10:57:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:24,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:24,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:24,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:24,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:57:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:24,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:24,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:24,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895114090] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:24,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:24,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-10-17 10:57:24,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597240875] [2022-10-17 10:57:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:24,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:24,759 INFO L87 Difference]: Start difference. First operand 1224 states and 2049 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:24,886 INFO L93 Difference]: Finished difference Result 2414 states and 4050 transitions. [2022-10-17 10:57:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:24,887 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-10-17 10:57:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:24,896 INFO L225 Difference]: With dead ends: 2414 [2022-10-17 10:57:24,896 INFO L226 Difference]: Without dead ends: 1224 [2022-10-17 10:57:24,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:57:24,904 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 35 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2885 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 [2022-10-17 10:57:24,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2885 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-10-17 10:57:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2022-10-17 10:57:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 984 states have (on average 1.681910569105691) internal successors, (1655), 1015 states have internal predecessors, (1655), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-10-17 10:57:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2044 transitions. [2022-10-17 10:57:24,963 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2044 transitions. Word has length 122 [2022-10-17 10:57:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:24,963 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2044 transitions. [2022-10-17 10:57:24,964 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2044 transitions. [2022-10-17 10:57:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:57:24,970 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:24,970 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] [2022-10-17 10:57:25,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:25,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-17 10:57:25,183 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash -544216706, now seen corresponding path program 1 times [2022-10-17 10:57:25,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753156679] [2022-10-17 10:57:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:25,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-17 10:57:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:57:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:57:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:57:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:57:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 10:57:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:25,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:25,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753156679] [2022-10-17 10:57:25,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753156679] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:25,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559152648] [2022-10-17 10:57:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:25,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:25,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:25,479 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:25,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-17 10:57:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:25,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 10:57:25,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559152648] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:25,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:25,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-17 10:57:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823950275] [2022-10-17 10:57:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:57:25,808 INFO L87 Difference]: Start difference. First operand 1224 states and 2044 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:26,017 INFO L93 Difference]: Finished difference Result 2410 states and 4041 transitions. [2022-10-17 10:57:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-10-17 10:57:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:26,031 INFO L225 Difference]: With dead ends: 2410 [2022-10-17 10:57:26,031 INFO L226 Difference]: Without dead ends: 1278 [2022-10-17 10:57:26,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:26,039 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 241 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:26,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2719 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-10-17 10:57:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1269. [2022-10-17 10:57:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1028 states have (on average 1.6916342412451362) internal successors, (1739), 1059 states have internal predecessors, (1739), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-10-17 10:57:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2127 transitions. [2022-10-17 10:57:26,159 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2127 transitions. Word has length 123 [2022-10-17 10:57:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:26,160 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 2127 transitions. [2022-10-17 10:57:26,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2127 transitions. [2022-10-17 10:57:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:57:26,167 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:26,167 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:57:26,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:26,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 10:57:26,380 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1683640439, now seen corresponding path program 1 times [2022-10-17 10:57:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:26,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811055767] [2022-10-17 10:57:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:26,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:57:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:57:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:57:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:57:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:57:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:57:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-17 10:57:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 10:57:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:26,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811055767] [2022-10-17 10:57:26,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811055767] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:26,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962822167] [2022-10-17 10:57:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:26,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:26,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:26,654 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:26,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-17 10:57:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:26,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:27,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:27,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962822167] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:27,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:27,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-10-17 10:57:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138188504] [2022-10-17 10:57:27,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:27,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:27,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:27,038 INFO L87 Difference]: Start difference. First operand 1269 states and 2127 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:27,200 INFO L93 Difference]: Finished difference Result 2447 states and 4093 transitions. [2022-10-17 10:57:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:27,201 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2022-10-17 10:57:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:27,211 INFO L225 Difference]: With dead ends: 2447 [2022-10-17 10:57:27,211 INFO L226 Difference]: Without dead ends: 1315 [2022-10-17 10:57:27,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:27,221 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 115 mSDsluCounter, 4724 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:27,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5690 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-10-17 10:57:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1282. [2022-10-17 10:57:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1038 states have (on average 1.6897880539499037) internal successors, (1754), 1071 states have internal predecessors, (1754), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-10-17 10:57:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2146 transitions. [2022-10-17 10:57:27,284 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2146 transitions. Word has length 124 [2022-10-17 10:57:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:27,285 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 2146 transitions. [2022-10-17 10:57:27,285 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2146 transitions. [2022-10-17 10:57:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 10:57:27,291 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:27,292 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] [2022-10-17 10:57:27,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:27,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:57:27,510 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash 355395704, now seen corresponding path program 1 times [2022-10-17 10:57:27,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:27,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221892377] [2022-10-17 10:57:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:27,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:57:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:57:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:57:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:57:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:57:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:57:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-10-17 10:57:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221892377] [2022-10-17 10:57:27,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221892377] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115997056] [2022-10-17 10:57:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:27,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:27,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:27,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:27,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-17 10:57:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:28,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:28,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:28,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115997056] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:28,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:28,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-10-17 10:57:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597228678] [2022-10-17 10:57:28,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:28,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:28,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:28,135 INFO L87 Difference]: Start difference. First operand 1282 states and 2146 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:28,288 INFO L93 Difference]: Finished difference Result 2456 states and 4107 transitions. [2022-10-17 10:57:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:28,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-10-17 10:57:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:28,299 INFO L225 Difference]: With dead ends: 2456 [2022-10-17 10:57:28,299 INFO L226 Difference]: Without dead ends: 1324 [2022-10-17 10:57:28,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:28,306 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 126 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:28,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5678 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-10-17 10:57:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1282. [2022-10-17 10:57:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1038 states have (on average 1.6897880539499037) internal successors, (1754), 1071 states have internal predecessors, (1754), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-10-17 10:57:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2146 transitions. [2022-10-17 10:57:28,368 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2146 transitions. Word has length 125 [2022-10-17 10:57:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:28,368 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 2146 transitions. [2022-10-17 10:57:28,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:28,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2146 transitions. [2022-10-17 10:57:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 10:57:28,375 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:28,375 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] [2022-10-17 10:57:28,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:28,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:28,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:28,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1623565320, now seen corresponding path program 1 times [2022-10-17 10:57:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:28,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860545579] [2022-10-17 10:57:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:28,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:57:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:57:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:57:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:57:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:57:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:57:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-10-17 10:57:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:28,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:28,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860545579] [2022-10-17 10:57:28,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860545579] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:28,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218054258] [2022-10-17 10:57:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:28,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:28,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:28,838 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:28,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-17 10:57:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:29,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:29,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218054258] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:29,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:29,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-10-17 10:57:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510262868] [2022-10-17 10:57:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:29,246 INFO L87 Difference]: Start difference. First operand 1282 states and 2146 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:29,468 INFO L93 Difference]: Finished difference Result 2459 states and 4110 transitions. [2022-10-17 10:57:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:29,469 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-10-17 10:57:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:29,479 INFO L225 Difference]: With dead ends: 2459 [2022-10-17 10:57:29,479 INFO L226 Difference]: Without dead ends: 1327 [2022-10-17 10:57:29,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:29,484 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 138 mSDsluCounter, 5628 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6583 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:29,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6583 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-10-17 10:57:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1282. [2022-10-17 10:57:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1038 states have (on average 1.6897880539499037) internal successors, (1754), 1071 states have internal predecessors, (1754), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-10-17 10:57:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2146 transitions. [2022-10-17 10:57:29,547 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2146 transitions. Word has length 125 [2022-10-17 10:57:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:29,548 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 2146 transitions. [2022-10-17 10:57:29,548 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2146 transitions. [2022-10-17 10:57:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 10:57:29,555 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:29,555 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] [2022-10-17 10:57:29,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:29,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-17 10:57:29,773 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1213361022, now seen corresponding path program 1 times [2022-10-17 10:57:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652996289] [2022-10-17 10:57:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:57:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:57:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:57:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:57:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:57:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:57:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:57:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-10-17 10:57:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-17 10:57:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:30,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652996289] [2022-10-17 10:57:30,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652996289] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:30,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642049466] [2022-10-17 10:57:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:30,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:30,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:30,082 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:30,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-17 10:57:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:30,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:30,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:30,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642049466] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:30,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:30,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-10-17 10:57:30,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093892799] [2022-10-17 10:57:30,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:30,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:30,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:30,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:30,400 INFO L87 Difference]: Start difference. First operand 1282 states and 2146 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:30,519 INFO L93 Difference]: Finished difference Result 2490 states and 4173 transitions. [2022-10-17 10:57:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-10-17 10:57:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:30,529 INFO L225 Difference]: With dead ends: 2490 [2022-10-17 10:57:30,529 INFO L226 Difference]: Without dead ends: 1282 [2022-10-17 10:57:30,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:57:30,534 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 10 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2887 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 [2022-10-17 10:57:30,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2887 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-10-17 10:57:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1282. [2022-10-17 10:57:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1038 states have (on average 1.686897880539499) internal successors, (1751), 1071 states have internal predecessors, (1751), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-10-17 10:57:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2143 transitions. [2022-10-17 10:57:30,595 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2143 transitions. Word has length 125 [2022-10-17 10:57:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:30,595 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 2143 transitions. [2022-10-17 10:57:30,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2143 transitions. [2022-10-17 10:57:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-10-17 10:57:30,601 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:30,602 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] [2022-10-17 10:57:30,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-17 10:57:30,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1706201909, now seen corresponding path program 1 times [2022-10-17 10:57:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596909674] [2022-10-17 10:57:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:30,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:57:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:57:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:57:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:57:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:57:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:57:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-17 10:57:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:31,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596909674] [2022-10-17 10:57:31,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596909674] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:31,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015555339] [2022-10-17 10:57:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:31,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:31,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:31,061 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:31,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-17 10:57:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:31,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:31,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:31,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015555339] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:31,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:31,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-10-17 10:57:31,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363615137] [2022-10-17 10:57:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:31,441 INFO L87 Difference]: Start difference. First operand 1282 states and 2143 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:31,654 INFO L93 Difference]: Finished difference Result 2450 states and 4093 transitions. [2022-10-17 10:57:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:31,655 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2022-10-17 10:57:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:31,664 INFO L225 Difference]: With dead ends: 2450 [2022-10-17 10:57:31,664 INFO L226 Difference]: Without dead ends: 1318 [2022-10-17 10:57:31,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:31,670 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 148 mSDsluCounter, 5607 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:31,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6560 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-10-17 10:57:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1282. [2022-10-17 10:57:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1038 states have (on average 1.686897880539499) internal successors, (1751), 1071 states have internal predecessors, (1751), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-10-17 10:57:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2143 transitions. [2022-10-17 10:57:31,731 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2143 transitions. Word has length 126 [2022-10-17 10:57:31,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:31,732 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 2143 transitions. [2022-10-17 10:57:31,732 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2143 transitions. [2022-10-17 10:57:31,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:57:31,738 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:31,738 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] [2022-10-17 10:57:31,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:31,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-17 10:57:31,978 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:31,979 INFO L85 PathProgramCache]: Analyzing trace with hash -347612237, now seen corresponding path program 1 times [2022-10-17 10:57:31,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:31,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512521578] [2022-10-17 10:57:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:57:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:57:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:57:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:57:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 10:57:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:57:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:57:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-17 10:57:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:32,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512521578] [2022-10-17 10:57:32,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512521578] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145543699] [2022-10-17 10:57:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:32,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:32,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:32,300 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:32,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-17 10:57:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:57:32,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 10:57:32,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:32,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145543699] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:32,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:32,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-10-17 10:57:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325624051] [2022-10-17 10:57:32,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:32,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:32,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:57:32,594 INFO L87 Difference]: Start difference. First operand 1282 states and 2143 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:32,670 INFO L93 Difference]: Finished difference Result 2541 states and 4262 transitions. [2022-10-17 10:57:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:32,671 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-10-17 10:57:32,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:32,680 INFO L225 Difference]: With dead ends: 2541 [2022-10-17 10:57:32,680 INFO L226 Difference]: Without dead ends: 1247 [2022-10-17 10:57:32,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:57:32,686 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 13 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:32,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2886 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-10-17 10:57:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2022-10-17 10:57:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1006 states have (on average 1.6739562624254474) internal successors, (1684), 1037 states have internal predecessors, (1684), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-10-17 10:57:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2072 transitions. [2022-10-17 10:57:32,740 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2072 transitions. Word has length 127 [2022-10-17 10:57:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:32,740 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2072 transitions. [2022-10-17 10:57:32,740 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:57:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2072 transitions. [2022-10-17 10:57:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-10-17 10:57:32,746 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:32,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:57:32,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:32,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:32,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:32,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:32,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1529404984, now seen corresponding path program 1 times [2022-10-17 10:57:32,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:32,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686344722] [2022-10-17 10:57:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:32,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:57:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:57:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:57:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:57:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:57:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:57:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 10:57:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:57:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:33,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686344722] [2022-10-17 10:57:33,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686344722] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528797682] [2022-10-17 10:57:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:33,283 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:33,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-17 10:57:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:57:33,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:33,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:33,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528797682] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:33,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:33,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2022-10-17 10:57:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877813733] [2022-10-17 10:57:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:33,649 INFO L87 Difference]: Start difference. First operand 1247 states and 2072 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:33,772 INFO L93 Difference]: Finished difference Result 2500 states and 4152 transitions. [2022-10-17 10:57:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-10-17 10:57:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:33,792 INFO L225 Difference]: With dead ends: 2500 [2022-10-17 10:57:33,792 INFO L226 Difference]: Without dead ends: 1270 [2022-10-17 10:57:33,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:33,798 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 138 mSDsluCounter, 4703 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:33,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5678 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-10-17 10:57:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1240. [2022-10-17 10:57:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 999 states have (on average 1.6696696696696696) internal successors, (1668), 1030 states have internal predecessors, (1668), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-10-17 10:57:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2056 transitions. [2022-10-17 10:57:33,860 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2056 transitions. Word has length 128 [2022-10-17 10:57:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:33,861 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2056 transitions. [2022-10-17 10:57:33,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:57:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2056 transitions. [2022-10-17 10:57:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-10-17 10:57:33,866 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:33,867 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] [2022-10-17 10:57:33,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:34,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb829b2-76ee-4436-87e9-cf40c71a6976/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:34,079 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash 607058645, now seen corresponding path program 1 times [2022-10-17 10:57:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:34,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986495019] [2022-10-17 10:57:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:57:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 10:57:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:57:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:57:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:57:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:57:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:57:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:57:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 10:57:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:57:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:57:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986495019] [2022-10-17 10:57:34,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986495019] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:34,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:57:34,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:57:34,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740982710] [2022-10-17 10:57:34,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:34,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:57:34,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:34,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:57:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:57:34,416 INFO L87 Difference]: Start difference. First operand 1240 states and 2056 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)