./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa --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 64bit --witnessprinter.graph.data.programhash 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:46:54,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:46:54,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:46:54,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:46:54,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:46:54,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:46:54,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:46:54,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:46:54,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:46:54,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:46:54,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:46:54,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:46:54,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:46:54,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:46:54,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:46:54,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:46:54,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:46:54,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:46:54,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:46:54,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:46:54,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:46:54,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:46:54,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:46:54,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:46:54,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:46:54,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:46:54,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:46:54,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:46:54,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:46:54,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:46:54,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:46:54,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:46:54,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:46:54,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:46:54,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:46:54,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:46:54,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:46:54,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:46:54,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:46:54,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:46:54,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:46:54,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 22:46:54,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:46:54,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:46:54,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:46:54,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:46:54,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:46:54,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:46:54,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:46:54,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:46:54,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:46:54,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:46:54,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:46:54,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:46:54,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:46:54,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:46:54,523 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:46:54,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:46:54,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:46:54,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:46:54,523 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_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd [2021-12-06 22:46:54,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:46:54,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:46:54,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:46:54,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:46:54,719 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:46:54,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-12-06 22:46:54,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/data/e1e87ba7c/8add328870f845d8a3bcbad2c6d92136/FLAG2cb449086 [2021-12-06 22:46:55,362 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:46:55,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-12-06 22:46:55,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/data/e1e87ba7c/8add328870f845d8a3bcbad2c6d92136/FLAG2cb449086 [2021-12-06 22:46:55,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/data/e1e87ba7c/8add328870f845d8a3bcbad2c6d92136 [2021-12-06 22:46:55,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:46:55,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:46:55,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:46:55,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:46:55,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:46:55,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:46:55" (1/1) ... [2021-12-06 22:46:55,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4291a464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:55, skipping insertion in model container [2021-12-06 22:46:55,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:46:55" (1/1) ... [2021-12-06 22:46:55,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:46:55,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:46:56,318 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_b8455151-4836-4a39-8242-668bfb10a6be/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-12-06 22:46:56,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:46:57,019 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:46:57,114 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_b8455151-4836-4a39-8242-668bfb10a6be/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-12-06 22:46:57,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:46:57,284 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:46:57,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57 WrapperNode [2021-12-06 22:46:57,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:46:57,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:46:57,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:46:57,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:46:57,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,423 INFO L137 Inliner]: procedures = 220, calls = 1907, calls flagged for inlining = 76, calls inlined = 76, statements flattened = 3491 [2021-12-06 22:46:57,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:46:57,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:46:57,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:46:57,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:46:57,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:46:57,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:46:57,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:46:57,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:46:57,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (1/1) ... [2021-12-06 22:46:57,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:46:57,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:46:57,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:46:57,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:46:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2021-12-06 22:46:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2021-12-06 22:46:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_isocpipes [2021-12-06 22:46:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_isocpipes [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_le16p [2021-12-06 22:46:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_le16p [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 22:46:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 22:46:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-06 22:46:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-06 22:46:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-12-06 22:46:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-12-06 22:46:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:46:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:46:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2021-12-06 22:46:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2021-12-06 22:46:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-06 22:46:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-06 22:46:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2021-12-06 22:46:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2021-12-06 22:46:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_usb [2021-12-06 22:46:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_usb [2021-12-06 22:46:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2021-12-06 22:46:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2021-12-06 22:46:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2021-12-06 22:46:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2021-12-06 22:46:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 22:46:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 22:46:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure FsmEvent [2021-12-06 22:46:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmEvent [2021-12-06 22:46:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:46:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:46:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2021-12-06 22:46:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2021-12-06 22:46:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2021-12-06 22:46:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2021-12-06 22:46:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-06 22:46:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-06 22:46:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2021-12-06 22:46:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2021-12-06 22:46:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 22:46:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 22:46:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2021-12-06 22:46:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2021-12-06 22:46:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2021-12-06 22:46:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2021-12-06 22:46:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_2 [2021-12-06 22:46:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_2 [2021-12-06 22:46:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-12-06 22:46:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-12-06 22:46:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2021-12-06 22:46:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2021-12-06 22:46:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:46:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-12-06 22:46:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-12-06 22:46:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-12-06 22:46:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-12-06 22:46:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-06 22:46:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-06 22:46:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2021-12-06 22:46:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2021-12-06 22:46:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2021-12-06 22:46:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2021-12-06 22:46:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2021-12-06 22:46:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2021-12-06 22:46:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-12-06 22:46:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-12-06 22:46:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-12-06 22:46:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-12-06 22:46:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:46:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-12-06 22:46:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-12-06 22:46:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-12-06 22:46:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-12-06 22:46:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_isocpipes [2021-12-06 22:46:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_isocpipes [2021-12-06 22:46:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure isdnhdlc_out_init [2021-12-06 22:46:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isdnhdlc_out_init [2021-12-06 22:46:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 22:46:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 22:46:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2021-12-06 22:46:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2021-12-06 22:46:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:46:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2021-12-06 22:46:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2021-12-06 22:46:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:46:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2021-12-06 22:46:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2021-12-06 22:46:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2021-12-06 22:46:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2021-12-06 22:46:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2021-12-06 22:46:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2021-12-06 22:46:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2021-12-06 22:46:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2021-12-06 22:46:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2021-12-06 22:46:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2021-12-06 22:46:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_b [2021-12-06 22:46:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_b [2021-12-06 22:46:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 22:46:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 22:46:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 22:46:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 22:46:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2021-12-06 22:46:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2021-12-06 22:46:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2021-12-06 22:46:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2021-12-06 22:46:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2021-12-06 22:46:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2021-12-06 22:46:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2021-12-06 22:46:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2021-12-06 22:46:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 22:46:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 22:46:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 22:46:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2021-12-06 22:46:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2021-12-06 22:46:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_b_out [2021-12-06 22:46:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_b_out [2021-12-06 22:46:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure FsmFree [2021-12-06 22:46:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmFree [2021-12-06 22:46:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 22:46:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:46:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure isdnhdlc_encode [2021-12-06 22:46:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isdnhdlc_encode [2021-12-06 22:46:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2021-12-06 22:46:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2021-12-06 22:46:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 22:46:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 22:46:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-06 22:46:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-06 22:46:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 22:46:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 22:46:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2021-12-06 22:46:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2021-12-06 22:46:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-06 22:46:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-06 22:46:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 22:46:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 22:46:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2021-12-06 22:46:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2021-12-06 22:46:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-06 22:46:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_in [2021-12-06 22:46:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_in [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 22:46:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-12-06 22:46:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-12-06 22:46:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_d_exit [2021-12-06 22:46:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_d_exit [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure dump_iso_packet___0 [2021-12-06 22:46:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_iso_packet___0 [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2021-12-06 22:46:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-06 22:46:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-06 22:46:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 22:46:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 22:46:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 22:46:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_b [2021-12-06 22:46:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_b [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure dump_packet [2021-12-06 22:46:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_packet [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_d [2021-12-06 22:46:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_d [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 22:46:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2021-12-06 22:46:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2021-12-06 22:46:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure FsmNew [2021-12-06 22:46:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmNew [2021-12-06 22:46:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2021-12-06 22:46:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2021-12-06 22:46:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2021-12-06 22:46:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2021-12-06 22:46:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2021-12-06 22:46:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2021-12-06 22:46:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2021-12-06 22:46:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2021-12-06 22:46:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2021-12-06 22:46:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2021-12-06 22:46:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_in [2021-12-06 22:46:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_in [2021-12-06 22:46:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2021-12-06 22:46:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2021-12-06 22:46:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2021-12-06 22:46:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2021-12-06 22:46:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure FsmChangeState [2021-12-06 22:46:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmChangeState [2021-12-06 22:46:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2021-12-06 22:46:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2021-12-06 22:46:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2021-12-06 22:46:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2021-12-06 22:46:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_d_out [2021-12-06 22:46:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_d_out [2021-12-06 22:46:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-06 22:46:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-06 22:46:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:46:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-06 22:46:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-06 22:46:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_nr [2021-12-06 22:46:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_nr [2021-12-06 22:46:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:46:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:46:58,101 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:46:58,104 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:46:58,222 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 22:47:03,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-06 22:47:07,511 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:47:07,526 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:47:07,526 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:47:07,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:07 BoogieIcfgContainer [2021-12-06 22:47:07,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:47:07,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:47:07,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:47:07,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:47:07,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:46:55" (1/3) ... [2021-12-06 22:47:07,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe784b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:47:07, skipping insertion in model container [2021-12-06 22:47:07,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:46:57" (2/3) ... [2021-12-06 22:47:07,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe784b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:47:07, skipping insertion in model container [2021-12-06 22:47:07,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:07" (3/3) ... [2021-12-06 22:47:07,535 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-12-06 22:47:07,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:47:07,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:47:07,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:47:07,583 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:47:07,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:47:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 1266 states, 884 states have (on average 1.3608597285067874) internal successors, (1203), 950 states have internal predecessors, (1203), 283 states have call successors, (283), 100 states have call predecessors, (283), 98 states have return successors, (278), 254 states have call predecessors, (278), 278 states have call successors, (278) [2021-12-06 22:47:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:47:07,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:07,622 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:47:07,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:07,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 517411944, now seen corresponding path program 1 times [2021-12-06 22:47:07,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:07,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247054938] [2021-12-06 22:47:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:07,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:47:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:47:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:47:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:47:08,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:08,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247054938] [2021-12-06 22:47:08,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247054938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:08,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:08,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:08,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068908975] [2021-12-06 22:47:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:08,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:08,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:08,095 INFO L87 Difference]: Start difference. First operand has 1266 states, 884 states have (on average 1.3608597285067874) internal successors, (1203), 950 states have internal predecessors, (1203), 283 states have call successors, (283), 100 states have call predecessors, (283), 98 states have return successors, (278), 254 states have call predecessors, (278), 278 states have call successors, (278) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:47:13,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:13,791 INFO L93 Difference]: Finished difference Result 4074 states and 6055 transitions. [2021-12-06 22:47:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:47:13,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-12-06 22:47:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:13,833 INFO L225 Difference]: With dead ends: 4074 [2021-12-06 22:47:13,833 INFO L226 Difference]: Without dead ends: 2789 [2021-12-06 22:47:13,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:13,851 INFO L933 BasicCegarLoop]: 1837 mSDtfsCounter, 2665 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 992 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2821 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 992 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:13,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2821 Valid, 3950 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [992 Valid, 1256 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-12-06 22:47:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-12-06 22:47:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2451. [2021-12-06 22:47:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1715 states have (on average 1.3521865889212827) internal successors, (2319), 1825 states have internal predecessors, (2319), 542 states have call successors, (542), 194 states have call predecessors, (542), 193 states have return successors, (537), 489 states have call predecessors, (537), 537 states have call successors, (537) [2021-12-06 22:47:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3398 transitions. [2021-12-06 22:47:14,111 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3398 transitions. Word has length 33 [2021-12-06 22:47:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:14,112 INFO L470 AbstractCegarLoop]: Abstraction has 2451 states and 3398 transitions. [2021-12-06 22:47:14,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:47:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3398 transitions. [2021-12-06 22:47:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:47:14,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:14,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:14,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:47:14,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:14,116 INFO L85 PathProgramCache]: Analyzing trace with hash -637694461, now seen corresponding path program 1 times [2021-12-06 22:47:14,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:14,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150451845] [2021-12-06 22:47:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:14,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:14,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:14,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150451845] [2021-12-06 22:47:14,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150451845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:14,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:14,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:47:14,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133864599] [2021-12-06 22:47:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:14,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:47:14,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:47:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:47:14,353 INFO L87 Difference]: Start difference. First operand 2451 states and 3398 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:19,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:22,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:22,412 INFO L93 Difference]: Finished difference Result 5444 states and 7661 transitions. [2021-12-06 22:47:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:47:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-12-06 22:47:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:22,429 INFO L225 Difference]: With dead ends: 5444 [2021-12-06 22:47:22,429 INFO L226 Difference]: Without dead ends: 3005 [2021-12-06 22:47:22,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:47:22,442 INFO L933 BasicCegarLoop]: 1834 mSDtfsCounter, 1044 mSDsluCounter, 8777 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 502 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 10611 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:22,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 10611 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 2200 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-12-06 22:47:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-12-06 22:47:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2453. [2021-12-06 22:47:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1717 states have (on average 1.351193942923704) internal successors, (2320), 1827 states have internal predecessors, (2320), 542 states have call successors, (542), 194 states have call predecessors, (542), 193 states have return successors, (537), 489 states have call predecessors, (537), 537 states have call successors, (537) [2021-12-06 22:47:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3399 transitions. [2021-12-06 22:47:22,536 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3399 transitions. Word has length 33 [2021-12-06 22:47:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:22,537 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3399 transitions. [2021-12-06 22:47:22,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3399 transitions. [2021-12-06 22:47:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:47:22,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:22,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:22,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:47:22,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash -580436159, now seen corresponding path program 1 times [2021-12-06 22:47:22,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:22,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658349947] [2021-12-06 22:47:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:22,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:22,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:22,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:22,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658349947] [2021-12-06 22:47:22,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658349947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:22,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:22,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:22,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520442284] [2021-12-06 22:47:22,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:22,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:22,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:22,725 INFO L87 Difference]: Start difference. First operand 2453 states and 3399 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:27,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:28,470 INFO L93 Difference]: Finished difference Result 8008 states and 12164 transitions. [2021-12-06 22:47:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:47:28,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-12-06 22:47:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:28,503 INFO L225 Difference]: With dead ends: 8008 [2021-12-06 22:47:28,503 INFO L226 Difference]: Without dead ends: 5567 [2021-12-06 22:47:28,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:28,517 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 2798 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 1024 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:28,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 4204 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 1309 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-12-06 22:47:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2021-12-06 22:47:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5205. [2021-12-06 22:47:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 3616 states have (on average 1.3393252212389382) internal successors, (4843), 3856 states have internal predecessors, (4843), 1115 states have call successors, (1115), 386 states have call predecessors, (1115), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-06 22:47:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7602 transitions. [2021-12-06 22:47:28,735 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7602 transitions. Word has length 33 [2021-12-06 22:47:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:28,736 INFO L470 AbstractCegarLoop]: Abstraction has 5205 states and 7602 transitions. [2021-12-06 22:47:28,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:28,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7602 transitions. [2021-12-06 22:47:28,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 22:47:28,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:28,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:28,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:47:28,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash -814198283, now seen corresponding path program 1 times [2021-12-06 22:47:28,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105836117] [2021-12-06 22:47:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:28,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:28,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:28,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105836117] [2021-12-06 22:47:28,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105836117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:28,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:28,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:28,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803178098] [2021-12-06 22:47:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:28,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:28,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:28,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:28,924 INFO L87 Difference]: Start difference. First operand 5205 states and 7602 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:32,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:32,619 INFO L93 Difference]: Finished difference Result 5559 states and 8181 transitions. [2021-12-06 22:47:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-12-06 22:47:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:32,650 INFO L225 Difference]: With dead ends: 5559 [2021-12-06 22:47:32,650 INFO L226 Difference]: Without dead ends: 5556 [2021-12-06 22:47:32,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:32,653 INFO L933 BasicCegarLoop]: 1598 mSDtfsCounter, 2114 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:32,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 2171 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 22:47:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2021-12-06 22:47:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5204. [2021-12-06 22:47:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3616 states have (on average 1.3390486725663717) internal successors, (4842), 3855 states have internal predecessors, (4842), 1114 states have call successors, (1114), 386 states have call predecessors, (1114), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-06 22:47:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7600 transitions. [2021-12-06 22:47:32,869 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7600 transitions. Word has length 34 [2021-12-06 22:47:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:32,869 INFO L470 AbstractCegarLoop]: Abstraction has 5204 states and 7600 transitions. [2021-12-06 22:47:32,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7600 transitions. [2021-12-06 22:47:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 22:47:32,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:32,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:32,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:47:32,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 529115332, now seen corresponding path program 1 times [2021-12-06 22:47:32,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:32,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109009453] [2021-12-06 22:47:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:32,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:33,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:33,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109009453] [2021-12-06 22:47:33,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109009453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:33,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:33,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:33,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010433823] [2021-12-06 22:47:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:33,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:33,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:33,053 INFO L87 Difference]: Start difference. First operand 5204 states and 7600 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:37,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:37,284 INFO L93 Difference]: Finished difference Result 5558 states and 8179 transitions. [2021-12-06 22:47:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:37,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-12-06 22:47:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:37,311 INFO L225 Difference]: With dead ends: 5558 [2021-12-06 22:47:37,312 INFO L226 Difference]: Without dead ends: 5555 [2021-12-06 22:47:37,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:37,314 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 2110 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 638 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:37,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2220 Valid, 2160 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 638 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-12-06 22:47:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2021-12-06 22:47:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 5203. [2021-12-06 22:47:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 3616 states have (on average 1.3387721238938053) internal successors, (4841), 3854 states have internal predecessors, (4841), 1113 states have call successors, (1113), 386 states have call predecessors, (1113), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-06 22:47:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7598 transitions. [2021-12-06 22:47:37,570 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7598 transitions. Word has length 35 [2021-12-06 22:47:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:37,570 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 7598 transitions. [2021-12-06 22:47:37,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7598 transitions. [2021-12-06 22:47:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:47:37,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:37,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:37,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:47:37,572 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:37,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash -777830696, now seen corresponding path program 1 times [2021-12-06 22:47:37,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:37,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845622320] [2021-12-06 22:47:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:37,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:37,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:37,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845622320] [2021-12-06 22:47:37,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845622320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:37,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:37,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:37,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584118317] [2021-12-06 22:47:37,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:37,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:37,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:37,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:37,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:37,720 INFO L87 Difference]: Start difference. First operand 5203 states and 7598 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:42,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:42,288 INFO L93 Difference]: Finished difference Result 5557 states and 8177 transitions. [2021-12-06 22:47:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-12-06 22:47:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:42,311 INFO L225 Difference]: With dead ends: 5557 [2021-12-06 22:47:42,311 INFO L226 Difference]: Without dead ends: 5554 [2021-12-06 22:47:42,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:42,313 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 2105 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 638 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:42,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2215 Valid, 2159 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-06 22:47:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2021-12-06 22:47:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 5202. [2021-12-06 22:47:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 3616 states have (on average 1.3384955752212389) internal successors, (4840), 3853 states have internal predecessors, (4840), 1112 states have call successors, (1112), 386 states have call predecessors, (1112), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-06 22:47:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7596 transitions. [2021-12-06 22:47:42,501 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7596 transitions. Word has length 36 [2021-12-06 22:47:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:42,501 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 7596 transitions. [2021-12-06 22:47:42,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7596 transitions. [2021-12-06 22:47:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 22:47:42,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:42,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:42,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:47:42,503 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1656520263, now seen corresponding path program 1 times [2021-12-06 22:47:42,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:42,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599565785] [2021-12-06 22:47:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:42,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:42,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:42,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599565785] [2021-12-06 22:47:42,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599565785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:42,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:42,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:42,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650759706] [2021-12-06 22:47:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:42,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:42,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:42,644 INFO L87 Difference]: Start difference. First operand 5202 states and 7596 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:46,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:46,646 INFO L93 Difference]: Finished difference Result 5556 states and 8175 transitions. [2021-12-06 22:47:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-12-06 22:47:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:46,668 INFO L225 Difference]: With dead ends: 5556 [2021-12-06 22:47:46,668 INFO L226 Difference]: Without dead ends: 5527 [2021-12-06 22:47:46,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:46,673 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 2104 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 637 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:46,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2217 Valid, 2150 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 635 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 22:47:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2021-12-06 22:47:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5175. [2021-12-06 22:47:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 3599 states have (on average 1.3384273409280356) internal successors, (4817), 3834 states have internal predecessors, (4817), 1105 states have call successors, (1105), 383 states have call predecessors, (1105), 470 states have return successors, (1638), 1064 states have call predecessors, (1638), 1104 states have call successors, (1638) [2021-12-06 22:47:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 7560 transitions. [2021-12-06 22:47:46,859 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 7560 transitions. Word has length 37 [2021-12-06 22:47:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:46,860 INFO L470 AbstractCegarLoop]: Abstraction has 5175 states and 7560 transitions. [2021-12-06 22:47:46,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:47:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 7560 transitions. [2021-12-06 22:47:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 22:47:46,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:46,869 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:46,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:47:46,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:46,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:46,869 INFO L85 PathProgramCache]: Analyzing trace with hash 158448476, now seen corresponding path program 1 times [2021-12-06 22:47:46,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:46,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149112313] [2021-12-06 22:47:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:46,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:47:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:47:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:47:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:47:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:47:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:47:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:47:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:47:47,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:47,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149112313] [2021-12-06 22:47:47,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149112313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:47,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:47,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:47:47,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367133135] [2021-12-06 22:47:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:47,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:47:47,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:47:47,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:47:47,156 INFO L87 Difference]: Start difference. First operand 5175 states and 7560 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:47:51,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:53,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:53,829 INFO L93 Difference]: Finished difference Result 8374 states and 12311 transitions. [2021-12-06 22:47:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:47:53,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-06 22:47:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:53,840 INFO L225 Difference]: With dead ends: 8374 [2021-12-06 22:47:53,840 INFO L226 Difference]: Without dead ends: 3211 [2021-12-06 22:47:53,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:47:53,854 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 2036 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1377 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 4716 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1377 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:53,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 4716 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1377 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-12-06 22:47:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-12-06 22:47:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2805. [2021-12-06 22:47:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1971 states have (on average 1.3363774733637748) internal successors, (2634), 2091 states have internal predecessors, (2634), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:47:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4095 transitions. [2021-12-06 22:47:53,965 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4095 transitions. Word has length 113 [2021-12-06 22:47:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:53,965 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 4095 transitions. [2021-12-06 22:47:53,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:47:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4095 transitions. [2021-12-06 22:47:53,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 22:47:53,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:53,971 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:53,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:47:53,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash 382893013, now seen corresponding path program 1 times [2021-12-06 22:47:53,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:53,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251089893] [2021-12-06 22:47:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:53,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:47:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:47:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:47:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:47:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:47:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:47:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:47:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:47:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:47:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:47:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 22:47:54,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:54,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251089893] [2021-12-06 22:47:54,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251089893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:54,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:54,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:47:54,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516619493] [2021-12-06 22:47:54,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:54,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:47:54,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:47:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:47:54,228 INFO L87 Difference]: Start difference. First operand 2805 states and 4095 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:47:59,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:47:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:59,695 INFO L93 Difference]: Finished difference Result 5964 states and 8801 transitions. [2021-12-06 22:47:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:47:59,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2021-12-06 22:47:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:59,707 INFO L225 Difference]: With dead ends: 5964 [2021-12-06 22:47:59,707 INFO L226 Difference]: Without dead ends: 3188 [2021-12-06 22:47:59,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:47:59,715 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1395 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 945 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:59,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 5177 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 1609 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-12-06 22:47:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2021-12-06 22:47:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 2809. [2021-12-06 22:47:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 1975 states have (on average 1.3356962025316457) internal successors, (2638), 2095 states have internal predecessors, (2638), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:47:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 4099 transitions. [2021-12-06 22:47:59,850 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 4099 transitions. Word has length 142 [2021-12-06 22:47:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:59,850 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 4099 transitions. [2021-12-06 22:47:59,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:47:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 4099 transitions. [2021-12-06 22:47:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 22:47:59,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:59,856 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:59,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:47:59,856 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1859941735, now seen corresponding path program 1 times [2021-12-06 22:47:59,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:59,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699634884] [2021-12-06 22:47:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:59,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:47:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:47:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:48:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:48:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:48:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:48:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 22:48:00,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699634884] [2021-12-06 22:48:00,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699634884] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568171651] [2021-12-06 22:48:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:00,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:00,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:00,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:48:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:00,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 3691 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:48:00,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:48:00,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:48:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 22:48:01,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568171651] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:48:01,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:48:01,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 9 [2021-12-06 22:48:01,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640142285] [2021-12-06 22:48:01,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:48:01,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:48:01,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:48:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:48:01,009 INFO L87 Difference]: Start difference. First operand 2809 states and 4099 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 22:48:05,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:07,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:08,118 INFO L93 Difference]: Finished difference Result 5972 states and 8809 transitions. [2021-12-06 22:48:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:48:08,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 144 [2021-12-06 22:48:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:08,129 INFO L225 Difference]: With dead ends: 5972 [2021-12-06 22:48:08,129 INFO L226 Difference]: Without dead ends: 3192 [2021-12-06 22:48:08,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:48:08,137 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1948 mSDsluCounter, 6024 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 1345 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 7671 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1345 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:08,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 7671 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1345 Valid, 1884 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-12-06 22:48:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2021-12-06 22:48:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 2817. [2021-12-06 22:48:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 1983 states have (on average 1.334341906202723) internal successors, (2646), 2103 states have internal predecessors, (2646), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 4107 transitions. [2021-12-06 22:48:08,246 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 4107 transitions. Word has length 144 [2021-12-06 22:48:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:08,247 INFO L470 AbstractCegarLoop]: Abstraction has 2817 states and 4107 transitions. [2021-12-06 22:48:08,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 22:48:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 4107 transitions. [2021-12-06 22:48:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:48:08,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:08,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:08,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:48:08,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:08,454 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1150551971, now seen corresponding path program 2 times [2021-12-06 22:48:08,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:08,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772229002] [2021-12-06 22:48:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:08,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:48:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:48:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:48:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:48:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:48:08,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:08,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772229002] [2021-12-06 22:48:08,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772229002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:08,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:48:08,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:48:08,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455367461] [2021-12-06 22:48:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:08,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:48:08,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:08,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:48:08,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:48:08,727 INFO L87 Difference]: Start difference. First operand 2817 states and 4107 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:48:16,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:18,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:20,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:22,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:23,668 INFO L93 Difference]: Finished difference Result 9145 states and 13521 transitions. [2021-12-06 22:48:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:48:23,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2021-12-06 22:48:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:23,688 INFO L225 Difference]: With dead ends: 9145 [2021-12-06 22:48:23,689 INFO L226 Difference]: Without dead ends: 6357 [2021-12-06 22:48:23,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:48:23,697 INFO L933 BasicCegarLoop]: 3233 mSDtfsCounter, 3266 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 1743 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 10320 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1743 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:23,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3388 Valid, 10320 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1743 Valid, 3058 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2021-12-06 22:48:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2021-12-06 22:48:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 2821. [2021-12-06 22:48:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 1987 states have (on average 1.3336688475088072) internal successors, (2650), 2107 states have internal predecessors, (2650), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4111 transitions. [2021-12-06 22:48:23,856 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4111 transitions. Word has length 146 [2021-12-06 22:48:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:23,856 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 4111 transitions. [2021-12-06 22:48:23,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:48:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4111 transitions. [2021-12-06 22:48:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:48:23,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:23,862 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:23,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:48:23,862 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1010003361, now seen corresponding path program 1 times [2021-12-06 22:48:23,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:23,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070575117] [2021-12-06 22:48:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:23,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:48:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:48:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:48:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:48:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:48:24,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:24,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070575117] [2021-12-06 22:48:24,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070575117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:24,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581620690] [2021-12-06 22:48:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:24,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:24,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:24,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:24,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:48:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:24,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 3727 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 22:48:24,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:48:25,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:48:25,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581620690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:25,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:48:25,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-12-06 22:48:25,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292109847] [2021-12-06 22:48:25,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:25,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:48:25,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:48:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:48:25,117 INFO L87 Difference]: Start difference. First operand 2821 states and 4111 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:48:27,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:27,496 INFO L93 Difference]: Finished difference Result 5760 states and 8404 transitions. [2021-12-06 22:48:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:48:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2021-12-06 22:48:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:27,507 INFO L225 Difference]: With dead ends: 5760 [2021-12-06 22:48:27,507 INFO L226 Difference]: Without dead ends: 2968 [2021-12-06 22:48:27,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:48:27,516 INFO L933 BasicCegarLoop]: 1796 mSDtfsCounter, 130 mSDsluCounter, 12420 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 14216 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:27,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 14216 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 22:48:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-12-06 22:48:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2827. [2021-12-06 22:48:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 1993 states have (on average 1.3326643251379828) internal successors, (2656), 2111 states have internal predecessors, (2656), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 567 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4117 transitions. [2021-12-06 22:48:27,645 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4117 transitions. Word has length 146 [2021-12-06 22:48:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:27,646 INFO L470 AbstractCegarLoop]: Abstraction has 2827 states and 4117 transitions. [2021-12-06 22:48:27,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:48:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4117 transitions. [2021-12-06 22:48:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 22:48:27,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:27,654 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:27,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:48:27,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 22:48:27,855 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -953437803, now seen corresponding path program 1 times [2021-12-06 22:48:27,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:27,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108822402] [2021-12-06 22:48:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:27,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:48:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:48:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:48:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:48:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:48:28,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:28,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108822402] [2021-12-06 22:48:28,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108822402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:28,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084024743] [2021-12-06 22:48:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:28,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:28,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:28,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:28,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:48:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:28,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 3753 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:48:28,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 22:48:28,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:48:28,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084024743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:28,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:48:28,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:48:28,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213431424] [2021-12-06 22:48:28,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:28,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:48:28,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:48:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:48:28,882 INFO L87 Difference]: Start difference. First operand 2827 states and 4117 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:48:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:29,012 INFO L93 Difference]: Finished difference Result 5918 states and 8671 transitions. [2021-12-06 22:48:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:48:29,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2021-12-06 22:48:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:29,022 INFO L225 Difference]: With dead ends: 5918 [2021-12-06 22:48:29,022 INFO L226 Difference]: Without dead ends: 3120 [2021-12-06 22:48:29,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:48:29,028 INFO L933 BasicCegarLoop]: 1826 mSDtfsCounter, 134 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:29,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 3537 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:48:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2021-12-06 22:48:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2829. [2021-12-06 22:48:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 1995 states have (on average 1.3323308270676693) internal successors, (2658), 2113 states have internal predecessors, (2658), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 567 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 4119 transitions. [2021-12-06 22:48:29,149 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 4119 transitions. Word has length 152 [2021-12-06 22:48:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:29,150 INFO L470 AbstractCegarLoop]: Abstraction has 2829 states and 4119 transitions. [2021-12-06 22:48:29,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:48:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 4119 transitions. [2021-12-06 22:48:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 22:48:29,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:29,155 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:29,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:48:29,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:48:29,357 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash -192706453, now seen corresponding path program 1 times [2021-12-06 22:48:29,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:29,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511204464] [2021-12-06 22:48:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:29,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:48:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:48:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:48:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:48:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:48:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:48:29,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:29,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511204464] [2021-12-06 22:48:29,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511204464] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:29,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674797347] [2021-12-06 22:48:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:29,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:29,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:29,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:48:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:30,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 3803 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 22:48:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:48:30,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:48:30,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674797347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:30,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:48:30,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2021-12-06 22:48:30,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828165563] [2021-12-06 22:48:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:30,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:48:30,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:48:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:48:30,495 INFO L87 Difference]: Start difference. First operand 2829 states and 4119 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:48:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:30,732 INFO L93 Difference]: Finished difference Result 5924 states and 8677 transitions. [2021-12-06 22:48:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:48:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2021-12-06 22:48:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:30,743 INFO L225 Difference]: With dead ends: 5924 [2021-12-06 22:48:30,743 INFO L226 Difference]: Without dead ends: 3124 [2021-12-06 22:48:30,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:48:30,750 INFO L933 BasicCegarLoop]: 1824 mSDtfsCounter, 140 mSDsluCounter, 9002 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 10826 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:30,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 10826 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:48:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2021-12-06 22:48:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2831. [2021-12-06 22:48:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 1997 states have (on average 1.3319979969954931) internal successors, (2660), 2113 states have internal predecessors, (2660), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 569 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4121 transitions. [2021-12-06 22:48:30,925 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4121 transitions. Word has length 163 [2021-12-06 22:48:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:30,925 INFO L470 AbstractCegarLoop]: Abstraction has 2831 states and 4121 transitions. [2021-12-06 22:48:30,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:48:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4121 transitions. [2021-12-06 22:48:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 22:48:30,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:30,930 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:30,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:48:31,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:48:31,131 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2104273505, now seen corresponding path program 2 times [2021-12-06 22:48:31,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:31,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856088579] [2021-12-06 22:48:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:31,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:48:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:48:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:48:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:48:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:48:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:48:31,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:31,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856088579] [2021-12-06 22:48:31,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856088579] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:31,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851492153] [2021-12-06 22:48:31,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:48:31,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:31,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:31,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:48:31,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:48:31,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:48:31,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 3829 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:48:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:48:32,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:48:32,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851492153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:32,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:48:32,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2021-12-06 22:48:32,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268113596] [2021-12-06 22:48:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:32,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:48:32,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:48:32,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:48:32,394 INFO L87 Difference]: Start difference. First operand 2831 states and 4121 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 22:48:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:32,735 INFO L93 Difference]: Finished difference Result 5633 states and 8256 transitions. [2021-12-06 22:48:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:48:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2021-12-06 22:48:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:32,748 INFO L225 Difference]: With dead ends: 5633 [2021-12-06 22:48:32,748 INFO L226 Difference]: Without dead ends: 2831 [2021-12-06 22:48:32,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:48:32,756 INFO L933 BasicCegarLoop]: 2148 mSDtfsCounter, 1823 mSDsluCounter, 8153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 10301 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:32,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 10301 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:48:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-12-06 22:48:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2021-12-06 22:48:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 1997 states have (on average 1.3309964947421131) internal successors, (2658), 2113 states have internal predecessors, (2658), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 569 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4119 transitions. [2021-12-06 22:48:32,901 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4119 transitions. Word has length 169 [2021-12-06 22:48:32,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:32,901 INFO L470 AbstractCegarLoop]: Abstraction has 2831 states and 4119 transitions. [2021-12-06 22:48:32,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 22:48:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4119 transitions. [2021-12-06 22:48:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 22:48:32,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:32,906 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:32,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:48:33,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:48:33,108 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 523309547, now seen corresponding path program 3 times [2021-12-06 22:48:33,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135414641] [2021-12-06 22:48:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:33,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:48:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:48:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:48:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:48:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:48:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:48:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 22:48:33,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135414641] [2021-12-06 22:48:33,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135414641] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648287353] [2021-12-06 22:48:33,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:48:33,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:33,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:33,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:48:33,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 22:48:33,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:48:33,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 22:48:33,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 22:48:34,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:48:34,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648287353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:34,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:48:34,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [9] total 21 [2021-12-06 22:48:34,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357578329] [2021-12-06 22:48:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:34,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:48:34,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:48:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:48:34,312 INFO L87 Difference]: Start difference. First operand 2831 states and 4119 transitions. Second operand has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 11 states have internal predecessors, (113), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:48:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:36,583 INFO L93 Difference]: Finished difference Result 5975 states and 8817 transitions. [2021-12-06 22:48:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 22:48:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 11 states have internal predecessors, (113), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 175 [2021-12-06 22:48:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:36,593 INFO L225 Difference]: With dead ends: 5975 [2021-12-06 22:48:36,594 INFO L226 Difference]: Without dead ends: 3173 [2021-12-06 22:48:36,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 22:48:36,599 INFO L933 BasicCegarLoop]: 3807 mSDtfsCounter, 1940 mSDsluCounter, 39678 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 43485 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:36,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 43485 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 22:48:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2021-12-06 22:48:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 2830. [2021-12-06 22:48:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 1996 states have (on average 1.3296593186372745) internal successors, (2654), 2112 states have internal predecessors, (2654), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 569 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-06 22:48:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4115 transitions. [2021-12-06 22:48:36,748 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4115 transitions. Word has length 175 [2021-12-06 22:48:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:36,748 INFO L470 AbstractCegarLoop]: Abstraction has 2830 states and 4115 transitions. [2021-12-06 22:48:36,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 11 states have internal predecessors, (113), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:48:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4115 transitions. [2021-12-06 22:48:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-06 22:48:36,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:36,758 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:36,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:48:36,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:36,960 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1247268916, now seen corresponding path program 1 times [2021-12-06 22:48:36,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:36,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679350222] [2021-12-06 22:48:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:36,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:48:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:48:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:48:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:48:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:48:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:48:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:48:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:48:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:48:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:48:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:48:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:48:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:48:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:48:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:48:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 22:48:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:48:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:48:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-06 22:48:37,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:37,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679350222] [2021-12-06 22:48:37,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679350222] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:37,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5141367] [2021-12-06 22:48:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:37,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:37,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:37,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:48:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 4255 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 22:48:37,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 51 proven. 16 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:48:38,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:48:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 22:48:39,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5141367] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:48:39,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:48:39,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2021-12-06 22:48:39,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866810255] [2021-12-06 22:48:39,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:48:39,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 22:48:39,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 22:48:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:48:39,057 INFO L87 Difference]: Start difference. First operand 2830 states and 4115 transitions. Second operand has 21 states, 21 states have (on average 14.476190476190476) internal successors, (304), 14 states have internal predecessors, (304), 6 states have call successors, (65), 9 states have call predecessors, (65), 6 states have return successors, (57), 9 states have call predecessors, (57), 6 states have call successors, (57) [2021-12-06 22:48:48,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:48:51,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:05,517 INFO L93 Difference]: Finished difference Result 7277 states and 10807 transitions. [2021-12-06 22:49:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 22:49:05,518 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.476190476190476) internal successors, (304), 14 states have internal predecessors, (304), 6 states have call successors, (65), 9 states have call predecessors, (65), 6 states have return successors, (57), 9 states have call predecessors, (57), 6 states have call successors, (57) Word has length 215 [2021-12-06 22:49:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:05,533 INFO L225 Difference]: With dead ends: 7277 [2021-12-06 22:49:05,533 INFO L226 Difference]: Without dead ends: 4460 [2021-12-06 22:49:05,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=2113, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 22:49:05,539 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 12886 mSDsluCounter, 22400 mSDsCounter, 0 mSdLazyCounter, 15743 mSolverCounterSat, 8129 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13103 SdHoareTripleChecker+Valid, 24395 SdHoareTripleChecker+Invalid, 23874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8129 IncrementalHoareTripleChecker+Valid, 15743 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:05,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13103 Valid, 24395 Invalid, 23874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8129 Valid, 15743 Invalid, 2 Unknown, 0 Unchecked, 25.0s Time] [2021-12-06 22:49:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2021-12-06 22:49:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 3004. [2021-12-06 22:49:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2107 states have (on average 1.3279544375889891) internal successors, (2798), 2224 states have internal predecessors, (2798), 623 states have call successors, (623), 202 states have call predecessors, (623), 273 states have return successors, (820), 644 states have call predecessors, (820), 622 states have call successors, (820) [2021-12-06 22:49:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 4241 transitions. [2021-12-06 22:49:05,700 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 4241 transitions. Word has length 215 [2021-12-06 22:49:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:05,701 INFO L470 AbstractCegarLoop]: Abstraction has 3004 states and 4241 transitions. [2021-12-06 22:49:05,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.476190476190476) internal successors, (304), 14 states have internal predecessors, (304), 6 states have call successors, (65), 9 states have call predecessors, (65), 6 states have return successors, (57), 9 states have call predecessors, (57), 6 states have call successors, (57) [2021-12-06 22:49:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 4241 transitions. [2021-12-06 22:49:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-06 22:49:05,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:05,707 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:05,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:05,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 22:49:05,910 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1644850792, now seen corresponding path program 2 times [2021-12-06 22:49:05,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:05,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217330525] [2021-12-06 22:49:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:05,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:49:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:49:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:49:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:49:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:49:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:49:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:49:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:49:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:49:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:49:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:49:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 22:49:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 22:49:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-06 22:49:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:49:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:49:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-06 22:49:06,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:06,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217330525] [2021-12-06 22:49:06,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217330525] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:06,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892907933] [2021-12-06 22:49:06,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:49:06,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:49:06,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:49:06,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:49:06,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 4281 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:49:06,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 22:49:07,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:49:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892907933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:07,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:49:07,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 12 [2021-12-06 22:49:07,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014558711] [2021-12-06 22:49:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:07,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:49:07,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:49:07,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:49:07,156 INFO L87 Difference]: Start difference. First operand 3004 states and 4241 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 22:49:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:07,365 INFO L93 Difference]: Finished difference Result 6282 states and 8924 transitions. [2021-12-06 22:49:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:49:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 221 [2021-12-06 22:49:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:07,375 INFO L225 Difference]: With dead ends: 6282 [2021-12-06 22:49:07,375 INFO L226 Difference]: Without dead ends: 3307 [2021-12-06 22:49:07,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:49:07,380 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 132 mSDsluCounter, 9320 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 11216 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:07,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 11216 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:49:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-12-06 22:49:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3014. [2021-12-06 22:49:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 2115 states have (on average 1.3267139479905437) internal successors, (2806), 2230 states have internal predecessors, (2806), 623 states have call successors, (623), 202 states have call predecessors, (623), 275 states have return successors, (826), 648 states have call predecessors, (826), 622 states have call successors, (826) [2021-12-06 22:49:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4255 transitions. [2021-12-06 22:49:07,522 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4255 transitions. Word has length 221 [2021-12-06 22:49:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:07,522 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 4255 transitions. [2021-12-06 22:49:07,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 22:49:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4255 transitions. [2021-12-06 22:49:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 22:49:07,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:07,528 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:07,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:49:07,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:49:07,731 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash -156965362, now seen corresponding path program 3 times [2021-12-06 22:49:07,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:07,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845976279] [2021-12-06 22:49:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:07,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:49:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:49:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:49:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:49:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:49:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:49:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:49:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:49:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:49:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:49:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:49:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 22:49:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:49:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:49:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:49:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:49:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 22:49:09,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845976279] [2021-12-06 22:49:09,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845976279] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795953273] [2021-12-06 22:49:09,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:49:09,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:09,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:09,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:09,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:49:10,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 22:49:10,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:49:10,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 3333 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 22:49:10,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-06 22:49:10,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:49:10,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795953273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:10,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:49:10,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 26 [2021-12-06 22:49:10,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532790587] [2021-12-06 22:49:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:10,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:49:10,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:49:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:49:10,714 INFO L87 Difference]: Start difference. First operand 3014 states and 4255 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 22:49:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:23,568 INFO L93 Difference]: Finished difference Result 7806 states and 11251 transitions. [2021-12-06 22:49:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:49:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 227 [2021-12-06 22:49:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:23,585 INFO L225 Difference]: With dead ends: 7806 [2021-12-06 22:49:23,585 INFO L226 Difference]: Without dead ends: 4788 [2021-12-06 22:49:23,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:49:23,593 INFO L933 BasicCegarLoop]: 1876 mSDtfsCounter, 4575 mSDsluCounter, 6798 mSDsCounter, 0 mSdLazyCounter, 7107 mSolverCounterSat, 1700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 8807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1700 IncrementalHoareTripleChecker+Valid, 7107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:23,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4746 Valid, 8674 Invalid, 8807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1700 Valid, 7107 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2021-12-06 22:49:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2021-12-06 22:49:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4271. [2021-12-06 22:49:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 3006 states have (on average 1.329673985362608) internal successors, (3997), 3171 states have internal predecessors, (3997), 888 states have call successors, (888), 299 states have call predecessors, (888), 376 states have return successors, (1124), 896 states have call predecessors, (1124), 887 states have call successors, (1124) [2021-12-06 22:49:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 6009 transitions. [2021-12-06 22:49:23,823 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 6009 transitions. Word has length 227 [2021-12-06 22:49:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:23,824 INFO L470 AbstractCegarLoop]: Abstraction has 4271 states and 6009 transitions. [2021-12-06 22:49:23,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 22:49:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 6009 transitions. [2021-12-06 22:49:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-06 22:49:23,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:23,831 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:23,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:49:24,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:24,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash -437264244, now seen corresponding path program 1 times [2021-12-06 22:49:24,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:24,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305779485] [2021-12-06 22:49:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:24,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:49:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:49:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:49:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:49:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:49:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:49:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:49:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:49:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:49:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:49:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:49:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 22:49:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 22:49:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:49:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:49:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-06 22:49:24,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305779485] [2021-12-06 22:49:24,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305779485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:24,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:49:24,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:49:24,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326330829] [2021-12-06 22:49:24,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:24,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:49:24,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:49:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:49:24,384 INFO L87 Difference]: Start difference. First operand 4271 states and 6009 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (26), 9 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 22:49:33,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:35,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:38,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:40,563 INFO L93 Difference]: Finished difference Result 9475 states and 13658 transitions. [2021-12-06 22:49:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:49:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (26), 9 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 229 [2021-12-06 22:49:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:40,582 INFO L225 Difference]: With dead ends: 9475 [2021-12-06 22:49:40,582 INFO L226 Difference]: Without dead ends: 5233 [2021-12-06 22:49:40,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:49:40,590 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 1253 mSDsluCounter, 3919 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 713 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:40,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 5451 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2965 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2021-12-06 22:49:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2021-12-06 22:49:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 4278. [2021-12-06 22:49:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 3013 states have (on average 1.3289080650514438) internal successors, (4004), 3178 states have internal predecessors, (4004), 888 states have call successors, (888), 299 states have call predecessors, (888), 376 states have return successors, (1124), 896 states have call predecessors, (1124), 887 states have call successors, (1124) [2021-12-06 22:49:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 6016 transitions. [2021-12-06 22:49:40,843 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 6016 transitions. Word has length 229 [2021-12-06 22:49:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:40,844 INFO L470 AbstractCegarLoop]: Abstraction has 4278 states and 6016 transitions. [2021-12-06 22:49:40,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (26), 9 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 22:49:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 6016 transitions. [2021-12-06 22:49:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-06 22:49:40,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:40,851 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:40,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:49:40,851 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1834744857, now seen corresponding path program 1 times [2021-12-06 22:49:40,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:40,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401133368] [2021-12-06 22:49:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:40,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:49:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:49:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:49:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:49:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:49:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:49:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:49:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:49:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:49:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:49:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:49:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:49:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 22:49:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 22:49:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 22:49:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:49:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:49:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-06 22:49:41,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401133368] [2021-12-06 22:49:41,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401133368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:41,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:49:41,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:49:41,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688760973] [2021-12-06 22:49:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:41,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:49:41,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:49:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:49:41,146 INFO L87 Difference]: Start difference. First operand 4278 states and 6016 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 22:49:46,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:48,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:49,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:52,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:54,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:49:54,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:54,848 INFO L93 Difference]: Finished difference Result 9629 states and 13839 transitions. [2021-12-06 22:49:54,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:49:54,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 247 [2021-12-06 22:49:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:54,868 INFO L225 Difference]: With dead ends: 9629 [2021-12-06 22:49:54,868 INFO L226 Difference]: Without dead ends: 5380 [2021-12-06 22:49:54,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:49:54,878 INFO L933 BasicCegarLoop]: 1829 mSDtfsCounter, 1370 mSDsluCounter, 5488 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 868 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 7317 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:54,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 7317 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 2014 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2021-12-06 22:49:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2021-12-06 22:49:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 4280. [2021-12-06 22:49:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3015 states have (on average 1.3286898839137644) internal successors, (4006), 3180 states have internal predecessors, (4006), 888 states have call successors, (888), 299 states have call predecessors, (888), 376 states have return successors, (1124), 896 states have call predecessors, (1124), 887 states have call successors, (1124) [2021-12-06 22:49:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 6018 transitions. [2021-12-06 22:49:55,135 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 6018 transitions. Word has length 247 [2021-12-06 22:49:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:55,135 INFO L470 AbstractCegarLoop]: Abstraction has 4280 states and 6018 transitions. [2021-12-06 22:49:55,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 22:49:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 6018 transitions. [2021-12-06 22:49:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 22:49:55,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:55,143 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:55,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:49:55,143 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1313952446, now seen corresponding path program 1 times [2021-12-06 22:49:55,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:55,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390635013] [2021-12-06 22:49:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:55,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:49:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:49:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:49:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:49:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:49:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:49:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:49:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 22:49:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:49:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:49:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:49:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 22:49:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 22:49:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:49:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:49:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-06 22:49:55,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390635013] [2021-12-06 22:49:55,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390635013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323025650] [2021-12-06 22:49:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:55,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:55,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:55,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:49:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:55,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 4151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:49:56,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:49:56,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:49:56,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323025650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:56,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:49:56,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-12-06 22:49:56,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510540168] [2021-12-06 22:49:56,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:56,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:49:56,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:49:56,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:49:56,237 INFO L87 Difference]: Start difference. First operand 4280 states and 6018 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 22:49:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:56,540 INFO L93 Difference]: Finished difference Result 8878 states and 12487 transitions. [2021-12-06 22:49:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:49:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 233 [2021-12-06 22:49:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:56,554 INFO L225 Difference]: With dead ends: 8878 [2021-12-06 22:49:56,554 INFO L226 Difference]: Without dead ends: 4627 [2021-12-06 22:49:56,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:49:56,562 INFO L933 BasicCegarLoop]: 1813 mSDtfsCounter, 259 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 5371 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:56,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 5371 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:49:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-12-06 22:49:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4135. [2021-12-06 22:49:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 2907 states have (on average 1.326453388372893) internal successors, (3856), 3064 states have internal predecessors, (3856), 854 states have call successors, (854), 296 states have call predecessors, (854), 373 states have return successors, (1065), 863 states have call predecessors, (1065), 853 states have call successors, (1065) [2021-12-06 22:49:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 5775 transitions. [2021-12-06 22:49:56,782 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 5775 transitions. Word has length 233 [2021-12-06 22:49:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:56,782 INFO L470 AbstractCegarLoop]: Abstraction has 4135 states and 5775 transitions. [2021-12-06 22:49:56,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 22:49:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 5775 transitions. [2021-12-06 22:49:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-06 22:49:56,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:56,787 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:56,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:56,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 22:49:56,989 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 400319568, now seen corresponding path program 1 times [2021-12-06 22:49:56,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:56,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485550991] [2021-12-06 22:49:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:56,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:49:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:49:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:49:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:49:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:49:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:49:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:49:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:49:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:49:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:49:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:49:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:49:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:49:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:49:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 22:49:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 22:49:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 22:49:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 22:49:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:49:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:49:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 22:49:58,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:58,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485550991] [2021-12-06 22:49:58,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485550991] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:58,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922760448] [2021-12-06 22:49:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:58,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:58,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:58,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:58,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:49:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:59,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 4430 conjuncts, 100 conjunts are in the unsatisfiable core [2021-12-06 22:49:59,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:59,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:49:59,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:49:59,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:49:59,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:50:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 53 proven. 14 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 22:50:00,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:50:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-06 22:50:03,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922760448] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:50:03,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:50:03,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 13] total 42 [2021-12-06 22:50:03,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677697322] [2021-12-06 22:50:03,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:50:03,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 22:50:03,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:50:03,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 22:50:03,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 22:50:03,026 INFO L87 Difference]: Start difference. First operand 4135 states and 5775 transitions. Second operand has 42 states, 39 states have (on average 6.564102564102564) internal successors, (256), 32 states have internal predecessors, (256), 17 states have call successors, (61), 12 states have call predecessors, (61), 13 states have return successors, (52), 19 states have call predecessors, (52), 17 states have call successors, (52) [2021-12-06 22:50:36,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:38,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:40,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:42,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:44,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:46,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:48,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:50,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:50:52,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:51:06,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:51:08,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:51:10,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:51:12,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:51:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:48,090 INFO L93 Difference]: Finished difference Result 8383 states and 12068 transitions. [2021-12-06 22:51:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-06 22:51:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 6.564102564102564) internal successors, (256), 32 states have internal predecessors, (256), 17 states have call successors, (61), 12 states have call predecessors, (61), 13 states have return successors, (52), 19 states have call predecessors, (52), 17 states have call successors, (52) Word has length 247 [2021-12-06 22:51:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:48,104 INFO L225 Difference]: With dead ends: 8383 [2021-12-06 22:51:48,104 INFO L226 Difference]: Without dead ends: 4277 [2021-12-06 22:51:48,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 538 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=969, Invalid=7403, Unknown=0, NotChecked=0, Total=8372 [2021-12-06 22:51:48,113 INFO L933 BasicCegarLoop]: 3225 mSDtfsCounter, 17437 mSDsluCounter, 45324 mSDsCounter, 0 mSdLazyCounter, 33779 mSolverCounterSat, 11316 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17521 SdHoareTripleChecker+Valid, 48549 SdHoareTripleChecker+Invalid, 48349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 11316 IncrementalHoareTripleChecker+Valid, 33779 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 3242 IncrementalHoareTripleChecker+Unchecked, 98.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:48,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17521 Valid, 48549 Invalid, 48349 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [11316 Valid, 33779 Invalid, 12 Unknown, 3242 Unchecked, 98.5s Time] [2021-12-06 22:51:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-12-06 22:51:48,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3033. [2021-12-06 22:51:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2130 states have (on average 1.3215962441314555) internal successors, (2815), 2247 states have internal predecessors, (2815), 621 states have call successors, (621), 206 states have call predecessors, (621), 281 states have return successors, (807), 646 states have call predecessors, (807), 620 states have call successors, (807) [2021-12-06 22:51:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4243 transitions. [2021-12-06 22:51:48,308 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4243 transitions. Word has length 247 [2021-12-06 22:51:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:48,309 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4243 transitions. [2021-12-06 22:51:48,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 6.564102564102564) internal successors, (256), 32 states have internal predecessors, (256), 17 states have call successors, (61), 12 states have call predecessors, (61), 13 states have return successors, (52), 19 states have call predecessors, (52), 17 states have call successors, (52) [2021-12-06 22:51:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4243 transitions. [2021-12-06 22:51:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-12-06 22:51:48,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:48,314 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:48,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:51:48,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 22:51:48,516 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 395576055, now seen corresponding path program 1 times [2021-12-06 22:51:48,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:48,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695071524] [2021-12-06 22:51:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:48,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:51:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:51:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:51:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:51:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:51:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:51:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:51:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:51:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:51:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:51:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:51:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:51:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 22:51:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 22:51:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 22:51:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:51:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:51:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:51:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:51:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:51:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:51:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 22:51:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-06 22:51:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:51:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:51:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-06 22:51:49,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:49,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695071524] [2021-12-06 22:51:49,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695071524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:51:49,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938414371] [2021-12-06 22:51:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:49,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:51:49,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:51:49,063 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:51:49,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:51:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 4743 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 22:51:51,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:51:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-06 22:51:51,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:51:51,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938414371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:51,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:51:51,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 14 [2021-12-06 22:51:51,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144115535] [2021-12-06 22:51:51,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:51,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:51:51,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:51:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:51:51,627 INFO L87 Difference]: Start difference. First operand 3033 states and 4243 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 22:51:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:51,894 INFO L93 Difference]: Finished difference Result 6126 states and 8574 transitions. [2021-12-06 22:51:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:51:51,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 300 [2021-12-06 22:51:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:51,903 INFO L225 Difference]: With dead ends: 6126 [2021-12-06 22:51:51,903 INFO L226 Difference]: Without dead ends: 3122 [2021-12-06 22:51:51,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:51,907 INFO L933 BasicCegarLoop]: 1798 mSDtfsCounter, 71 mSDsluCounter, 10703 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12501 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:51,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 12501 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:51:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2021-12-06 22:51:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3039. [2021-12-06 22:51:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 2135 states have (on average 1.3208430913348945) internal successors, (2820), 2251 states have internal predecessors, (2820), 621 states have call successors, (621), 206 states have call predecessors, (621), 282 states have return successors, (808), 648 states have call predecessors, (808), 620 states have call successors, (808) [2021-12-06 22:51:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 4249 transitions. [2021-12-06 22:51:52,085 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 4249 transitions. Word has length 300 [2021-12-06 22:51:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:52,085 INFO L470 AbstractCegarLoop]: Abstraction has 3039 states and 4249 transitions. [2021-12-06 22:51:52,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 22:51:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 4249 transitions. [2021-12-06 22:51:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-06 22:51:52,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:52,089 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:52,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:51:52,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:51:52,290 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 218155309, now seen corresponding path program 2 times [2021-12-06 22:51:52,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685866052] [2021-12-06 22:51:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:52,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:51:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:51:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:51:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:51:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:51:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:51:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:51:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:51:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:51:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:51:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:51:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:51:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:51:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 22:51:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 22:51:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 22:51:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:51:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:51:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:51:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:51:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:51:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:51:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-06 22:51:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 22:51:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:51:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:51:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 24 proven. 38 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-12-06 22:51:56,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685866052] [2021-12-06 22:51:56,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685866052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:51:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597940391] [2021-12-06 22:51:56,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:51:56,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:51:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:51:56,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:51:56,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8455151-4836-4a39-8242-668bfb10a6be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:52:03,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:52:03,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:03,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 4769 conjuncts, 239 conjunts are in the unsatisfiable core [2021-12-06 22:52:03,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:03,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:52:04,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-06 22:52:04,982 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:52:04,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 22:52:05,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:52:05,504 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:52:05,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:52:07,199 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:52:07,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:52:07,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 22:52:08,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 22:52:08,844 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:52:08,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-06 22:52:08,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:08,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 22:52:09,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:52:09,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:09,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:52:11,119 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 22:52:11,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 22:52:11,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:11,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 22:52:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 105 proven. 115 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 22:52:15,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:23,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597940391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:52:23,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:23,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 45] total 79 [2021-12-06 22:52:23,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850386254] [2021-12-06 22:52:23,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:23,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-12-06 22:52:23,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-12-06 22:52:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=7508, Unknown=1, NotChecked=0, Total=7832 [2021-12-06 22:52:23,079 INFO L87 Difference]: Start difference. First operand 3039 states and 4249 transitions. Second operand has 79 states, 75 states have (on average 4.226666666666667) internal successors, (317), 60 states have internal predecessors, (317), 29 states have call successors, (73), 13 states have call predecessors, (73), 23 states have return successors, (70), 38 states have call predecessors, (70), 29 states have call successors, (70) [2021-12-06 22:55:06,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:08,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:10,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:12,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:14,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:16,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:18,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:20,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:22,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:24,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:26,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:28,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:30,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:32,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:34,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:36,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:39,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:41,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:43,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:45,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:51,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:55:56,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 22:56:10,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:12,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:14,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:16,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:20,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:22,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:25,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:27,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:29,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:31,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:33,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:35,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:37,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:39,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:41,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:43,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:45,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:47,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:49,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:51,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:53,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:55,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:57,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:56:59,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:00,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:02,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:04,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:06,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:08,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:10,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:12,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:14,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:16,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:18,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:20,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:22,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:24,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:26,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:28,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:57:29,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:58:52,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:58:54,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:58:56,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:58:58,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:00,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:02,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:04,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:06,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:08,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:10,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:12,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:14,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:16,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:18,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:20,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:22,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:24,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:26,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:28,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:30,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:32,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:34,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:36,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:38,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:40,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:42,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:44,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:46,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:48,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:50,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:52,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:54,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:56,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:58,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:00,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:02,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:04,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []