./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL --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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:37:23,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:37:23,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:37:23,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:37:23,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:37:23,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:37:23,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:37:23,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:37:23,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:37:23,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:37:23,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:37:23,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:37:23,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:37:23,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:37:23,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:37:23,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:37:23,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:37:23,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:37:23,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:37:23,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:37:23,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:37:23,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:37:23,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:37:23,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:37:23,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:37:23,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:37:23,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:37:23,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:37:23,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:37:23,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:37:23,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:37:23,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:37:23,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:37:23,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:37:23,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:37:23,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:37:23,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:37:23,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:37:23,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:37:23,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:37:23,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:37:23,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-19 05:37:23,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:37:23,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:37:23,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:37:23,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:37:23,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:37:23,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:37:23,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:37:23,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:37:23,671 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:37:23,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:37:23,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:37:23,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:37:23,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:37:23,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:37:23,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:37:23,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:37:23,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:37:23,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:37:23,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:37:23,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:37:23,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:37:23,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:37:23,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:37:23,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:37:23,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:37:23,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:37:23,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:37:23,678 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:37:23,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:37:23,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:37:23,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:37:23,679 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_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-19 05:37:24,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:37:24,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:37:24,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:37:24,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:37:24,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:37:24,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 05:37:24,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/data/3b7e638e1/1c804168518143678c1d51dbb8ff903c/FLAG852d29a0d [2021-11-19 05:37:25,285 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:37:25,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 05:37:25,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/data/3b7e638e1/1c804168518143678c1d51dbb8ff903c/FLAG852d29a0d [2021-11-19 05:37:25,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/data/3b7e638e1/1c804168518143678c1d51dbb8ff903c [2021-11-19 05:37:25,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:37:25,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:37:25,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:37:25,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:37:25,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:37:25,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:37:25" (1/1) ... [2021-11-19 05:37:25,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d135438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:25, skipping insertion in model container [2021-11-19 05:37:25,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:37:25" (1/1) ... [2021-11-19 05:37:25,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:37:25,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:37:27,566 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_f155251d-5907-430b-bad2-9575290433e9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-19 05:37:27,606 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:37:27,643 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:37:28,071 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_f155251d-5907-430b-bad2-9575290433e9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-19 05:37:28,093 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:37:28,190 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:37:28,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28 WrapperNode [2021-11-19 05:37:28,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:37:28,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:37:28,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:37:28,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:37:28,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,537 INFO L137 Inliner]: procedures = 189, calls = 1289, calls flagged for inlining = 74, calls inlined = 74, statements flattened = 3219 [2021-11-19 05:37:28,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:37:28,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:37:28,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:37:28,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:37:28,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:37:28,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:37:28,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:37:28,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:37:28,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (1/1) ... [2021-11-19 05:37:28,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:37:28,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:37:28,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:37:28,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:37:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2021-11-19 05:37:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2021-11-19 05:37:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-19 05:37:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-19 05:37:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-11-19 05:37:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-11-19 05:37:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 05:37:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 05:37:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-19 05:37:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 05:37:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 05:37:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 05:37:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 05:37:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:37:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 05:37:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 05:37:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2021-11-19 05:37:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2021-11-19 05:37:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2021-11-19 05:37:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2021-11-19 05:37:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 05:37:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 05:37:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-11-19 05:37:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-11-19 05:37:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2021-11-19 05:37:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2021-11-19 05:37:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 05:37:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 05:37:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 05:37:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 05:37:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-19 05:37:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-19 05:37:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2021-11-19 05:37:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2021-11-19 05:37:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-19 05:37:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-19 05:37:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-19 05:37:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-19 05:37:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2021-11-19 05:37:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2021-11-19 05:37:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-11-19 05:37:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-11-19 05:37:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:37:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 05:37:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 05:37:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 05:37:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 05:37:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2021-11-19 05:37:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2021-11-19 05:37:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-19 05:37:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-19 05:37:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2021-11-19 05:37:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2021-11-19 05:37:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 05:37:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 05:37:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 05:37:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 05:37:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2021-11-19 05:37:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2021-11-19 05:37:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-19 05:37:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-19 05:37:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 05:37:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 05:37:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2021-11-19 05:37:28,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2021-11-19 05:37:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:37:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 05:37:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2021-11-19 05:37:28,968 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2021-11-19 05:37:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-19 05:37:28,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-19 05:37:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 05:37:28,968 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 05:37:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2021-11-19 05:37:28,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2021-11-19 05:37:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-19 05:37:28,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-19 05:37:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:37:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-11-19 05:37:28,971 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-11-19 05:37:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2021-11-19 05:37:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2021-11-19 05:37:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 05:37:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 05:37:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:37:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:37:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 05:37:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 05:37:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 05:37:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2021-11-19 05:37:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2021-11-19 05:37:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-19 05:37:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-19 05:37:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:37:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2021-11-19 05:37:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2021-11-19 05:37:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2021-11-19 05:37:28,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2021-11-19 05:37:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 05:37:28,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 05:37:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 05:37:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 05:37:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 05:37:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 05:37:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-19 05:37:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-19 05:37:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 05:37:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 05:37:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 05:37:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 05:37:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2021-11-19 05:37:28,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2021-11-19 05:37:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:37:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 05:37:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 05:37:28,982 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 05:37:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-19 05:37:28,983 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-19 05:37:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 05:37:28,987 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 05:37:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-19 05:37:28,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-19 05:37:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 05:37:28,988 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 05:37:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-11-19 05:37:28,990 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-11-19 05:37:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 05:37:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 05:37:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-19 05:37:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-19 05:37:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2021-11-19 05:37:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2021-11-19 05:37:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2021-11-19 05:37:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2021-11-19 05:37:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-19 05:37:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-19 05:37:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-19 05:37:28,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-19 05:37:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2021-11-19 05:37:28,999 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2021-11-19 05:37:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-19 05:37:28,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-19 05:37:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2021-11-19 05:37:29,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2021-11-19 05:37:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:37:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-19 05:37:29,000 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-19 05:37:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-19 05:37:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-19 05:37:29,001 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-19 05:37:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:37:29,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:37:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 05:37:29,002 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 05:37:29,924 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:37:29,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:37:30,291 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 05:37:53,436 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:37:53,469 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:37:53,473 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:37:53,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:37:53 BoogieIcfgContainer [2021-11-19 05:37:53,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:37:53,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:37:53,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:37:53,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:37:53,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:37:25" (1/3) ... [2021-11-19 05:37:53,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29b7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:37:53, skipping insertion in model container [2021-11-19 05:37:53,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:37:28" (2/3) ... [2021-11-19 05:37:53,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29b7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:37:53, skipping insertion in model container [2021-11-19 05:37:53,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:37:53" (3/3) ... [2021-11-19 05:37:53,491 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 05:37:53,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:37:53,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:37:53,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:37:53,589 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 [2021-11-19 05:37:53,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:37:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 1227 states, 835 states have (on average 1.362874251497006) internal successors, (1138), 878 states have internal predecessors, (1138), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-19 05:37:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 05:37:53,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:37:53,683 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:37:53,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:37:53,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:37:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2026460203, now seen corresponding path program 1 times [2021-11-19 05:37:53,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:37:53,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008531405] [2021-11-19 05:37:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:37:53,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:37:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:37:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:37:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:37:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:37:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:37:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:37:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:37:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:37:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:37:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:37:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:37:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:37:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:37:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:37:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:37:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 05:37:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 05:37:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:37:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 05:37:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 05:37:55,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:37:55,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008531405] [2021-11-19 05:37:55,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008531405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:37:55,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:37:55,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:37:55,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593988751] [2021-11-19 05:37:55,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:37:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:37:55,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:37:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:37:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:37:55,108 INFO L87 Difference]: Start difference. First operand has 1227 states, 835 states have (on average 1.362874251497006) internal successors, (1138), 878 states have internal predecessors, (1138), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 05:37:57,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:37:59,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:38:05,794 INFO L93 Difference]: Finished difference Result 2859 states and 4316 transitions. [2021-11-19 05:38:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:38:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2021-11-19 05:38:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:38:05,839 INFO L225 Difference]: With dead ends: 2859 [2021-11-19 05:38:05,840 INFO L226 Difference]: Without dead ends: 1625 [2021-11-19 05:38:05,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:38:05,870 INFO L933 BasicCegarLoop]: 1639 mSDtfsCounter, 1892 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 1911 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1911 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:38:05,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 3129 Invalid, 2980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1911 Valid, 1067 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-11-19 05:38:05,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-11-19 05:38:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1215. [2021-11-19 05:38:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 830 states have (on average 1.355421686746988) internal successors, (1125), 866 states have internal predecessors, (1125), 318 states have call successors, (318), 67 states have call predecessors, (318), 66 states have return successors, (305), 302 states have call predecessors, (305), 305 states have call successors, (305) [2021-11-19 05:38:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1748 transitions. [2021-11-19 05:38:06,096 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1748 transitions. Word has length 171 [2021-11-19 05:38:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:38:06,097 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1748 transitions. [2021-11-19 05:38:06,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 05:38:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1748 transitions. [2021-11-19 05:38:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 05:38:06,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:38:06,104 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:38:06,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:38:06,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:38:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:38:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash -491852215, now seen corresponding path program 1 times [2021-11-19 05:38:06,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:38:06,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345277593] [2021-11-19 05:38:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:38:06,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:38:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:38:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:38:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:38:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:38:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:38:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:38:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:38:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:38:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:38:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 05:38:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 05:38:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 05:38:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 05:38:06,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:38:06,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345277593] [2021-11-19 05:38:06,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345277593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:38:06,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:38:06,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:38:06,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573933513] [2021-11-19 05:38:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:38:06,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:38:06,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:38:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:38:07,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:38:07,038 INFO L87 Difference]: Start difference. First operand 1215 states and 1748 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 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) [2021-11-19 05:38:09,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:38:21,033 INFO L93 Difference]: Finished difference Result 3188 states and 4819 transitions. [2021-11-19 05:38:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:38:21,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 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 171 [2021-11-19 05:38:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:38:21,077 INFO L225 Difference]: With dead ends: 3188 [2021-11-19 05:38:21,078 INFO L226 Difference]: Without dead ends: 3164 [2021-11-19 05:38:21,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:38:21,084 INFO L933 BasicCegarLoop]: 1810 mSDtfsCounter, 4810 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 3250 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5100 SdHoareTripleChecker+Valid, 4630 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3250 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:38:21,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5100 Valid, 4630 Invalid, 5633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3250 Valid, 2382 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2021-11-19 05:38:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-11-19 05:38:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2343. [2021-11-19 05:38:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1610 states have (on average 1.3571428571428572) internal successors, (2185), 1671 states have internal predecessors, (2185), 604 states have call successors, (604), 130 states have call predecessors, (604), 128 states have return successors, (592), 583 states have call predecessors, (592), 592 states have call successors, (592) [2021-11-19 05:38:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3381 transitions. [2021-11-19 05:38:21,324 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3381 transitions. Word has length 171 [2021-11-19 05:38:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:38:21,326 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3381 transitions. [2021-11-19 05:38:21,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 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) [2021-11-19 05:38:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3381 transitions. [2021-11-19 05:38:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 05:38:21,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:38:21,338 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:38:21,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:38:21,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:38:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:38:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1931608669, now seen corresponding path program 1 times [2021-11-19 05:38:21,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:38:21,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505620598] [2021-11-19 05:38:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:38:21,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:38:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:38:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:38:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:38:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:38:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:38:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:38:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:38:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:38:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:38:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 05:38:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:21,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 05:38:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 05:38:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 05:38:22,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:38:22,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505620598] [2021-11-19 05:38:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505620598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:38:22,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:38:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:38:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759586297] [2021-11-19 05:38:22,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:38:22,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:38:22,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:38:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:38:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:38:22,083 INFO L87 Difference]: Start difference. First operand 2343 states and 3381 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 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) [2021-11-19 05:38:24,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:26,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:28,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:30,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:38:48,025 INFO L93 Difference]: Finished difference Result 8568 states and 12822 transitions. [2021-11-19 05:38:48,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:38:48,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 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 172 [2021-11-19 05:38:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:38:48,114 INFO L225 Difference]: With dead ends: 8568 [2021-11-19 05:38:48,114 INFO L226 Difference]: Without dead ends: 6255 [2021-11-19 05:38:48,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:38:48,135 INFO L933 BasicCegarLoop]: 1938 mSDtfsCounter, 3919 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 2221 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 6395 SdHoareTripleChecker+Invalid, 6299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2221 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:38:48,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4206 Valid, 6395 Invalid, 6299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2221 Valid, 4074 Invalid, 4 Unknown, 0 Unchecked, 25.2s Time] [2021-11-19 05:38:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2021-11-19 05:38:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 4616. [2021-11-19 05:38:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 3183 states have (on average 1.3594093622368835) internal successors, (4327), 3296 states have internal predecessors, (4327), 1180 states have call successors, (1180), 256 states have call predecessors, (1180), 252 states have return successors, (1162), 1147 states have call predecessors, (1162), 1162 states have call successors, (1162) [2021-11-19 05:38:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6669 transitions. [2021-11-19 05:38:48,537 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6669 transitions. Word has length 172 [2021-11-19 05:38:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:38:48,539 INFO L470 AbstractCegarLoop]: Abstraction has 4616 states and 6669 transitions. [2021-11-19 05:38:48,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 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) [2021-11-19 05:38:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6669 transitions. [2021-11-19 05:38:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-19 05:38:48,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:38:48,543 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:38:48,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:38:48,544 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:38:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:38:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash 209883035, now seen corresponding path program 1 times [2021-11-19 05:38:48,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:38:48,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688458183] [2021-11-19 05:38:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:38:48,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:38:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:38:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:38:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:38:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:38:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:38:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:38:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:38:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:38:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:38:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:38:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 05:38:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 05:38:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:38:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-19 05:38:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-19 05:38:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 05:38:49,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:38:49,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688458183] [2021-11-19 05:38:49,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688458183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:38:49,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:38:49,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:38:49,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848708515] [2021-11-19 05:38:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:38:49,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:38:49,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:38:49,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:38:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:38:49,220 INFO L87 Difference]: Start difference. First operand 4616 states and 6669 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 05:38:51,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:53,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:55,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:38:57,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:39:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:39:10,734 INFO L93 Difference]: Finished difference Result 15335 states and 22651 transitions. [2021-11-19 05:39:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:39:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 174 [2021-11-19 05:39:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:39:10,864 INFO L225 Difference]: With dead ends: 15335 [2021-11-19 05:39:10,864 INFO L226 Difference]: Without dead ends: 10749 [2021-11-19 05:39:10,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:39:10,902 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 2988 mSDsluCounter, 3791 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 1871 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 5736 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1871 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:39:10,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3232 Valid, 5736 Invalid, 4677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1871 Valid, 2802 Invalid, 4 Unknown, 0 Unchecked, 20.8s Time] [2021-11-19 05:39:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10749 states. [2021-11-19 05:39:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10749 to 8938. [2021-11-19 05:39:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 6162 states have (on average 1.3620577734501784) internal successors, (8393), 6370 states have internal predecessors, (8393), 2280 states have call successors, (2280), 500 states have call predecessors, (2280), 495 states have return successors, (2262), 2235 states have call predecessors, (2262), 2262 states have call successors, (2262) [2021-11-19 05:39:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 12935 transitions. [2021-11-19 05:39:11,641 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 12935 transitions. Word has length 174 [2021-11-19 05:39:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:39:11,644 INFO L470 AbstractCegarLoop]: Abstraction has 8938 states and 12935 transitions. [2021-11-19 05:39:11,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 05:39:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 12935 transitions. [2021-11-19 05:39:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-19 05:39:11,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:39:11,654 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:39:11,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:39:11,655 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:39:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:39:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash 547971873, now seen corresponding path program 1 times [2021-11-19 05:39:11,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:39:11,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381186427] [2021-11-19 05:39:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:11,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:39:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:39:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:39:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:39:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:39:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:39:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:39:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:39:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:39:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:39:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 05:39:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 05:39:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 05:39:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-19 05:39:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 05:39:12,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:39:12,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381186427] [2021-11-19 05:39:12,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381186427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:39:12,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:39:12,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:39:12,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994040307] [2021-11-19 05:39:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:39:12,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:39:12,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:39:12,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:39:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:39:12,454 INFO L87 Difference]: Start difference. First operand 8938 states and 12935 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 05:39:14,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:39:16,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:39:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:39:28,335 INFO L93 Difference]: Finished difference Result 33252 states and 49860 transitions. [2021-11-19 05:39:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:39:28,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 190 [2021-11-19 05:39:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:39:28,531 INFO L225 Difference]: With dead ends: 33252 [2021-11-19 05:39:28,532 INFO L226 Difference]: Without dead ends: 24341 [2021-11-19 05:39:28,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:39:28,594 INFO L933 BasicCegarLoop]: 1835 mSDtfsCounter, 4815 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 3247 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5107 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3247 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:39:28,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5107 Valid, 4867 Invalid, 5833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3247 Valid, 2584 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-19 05:39:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24341 states. [2021-11-19 05:39:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24341 to 17785. [2021-11-19 05:39:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17785 states, 12277 states have (on average 1.3627922130813717) internal successors, (16731), 12681 states have internal predecessors, (16731), 4524 states have call successors, (4524), 991 states have call predecessors, (4524), 983 states have return successors, (4504), 4448 states have call predecessors, (4504), 4504 states have call successors, (4504) [2021-11-19 05:39:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17785 states to 17785 states and 25759 transitions. [2021-11-19 05:39:29,962 INFO L78 Accepts]: Start accepts. Automaton has 17785 states and 25759 transitions. Word has length 190 [2021-11-19 05:39:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:39:29,963 INFO L470 AbstractCegarLoop]: Abstraction has 17785 states and 25759 transitions. [2021-11-19 05:39:29,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 05:39:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 17785 states and 25759 transitions. [2021-11-19 05:39:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-19 05:39:29,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:39:29,970 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:39:29,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:39:29,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:39:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:39:29,971 INFO L85 PathProgramCache]: Analyzing trace with hash 257665740, now seen corresponding path program 1 times [2021-11-19 05:39:29,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:39:29,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061430420] [2021-11-19 05:39:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:29,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:39:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:39:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:39:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:39:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:39:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:39:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:39:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:39:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:39:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:39:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 05:39:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 05:39:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 05:39:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-19 05:39:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-11-19 05:39:31,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:39:31,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061430420] [2021-11-19 05:39:31,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061430420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:39:31,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573050390] [2021-11-19 05:39:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:31,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:39:31,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:39:31,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:39:31,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:39:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:34,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:39:34,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:39:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-19 05:39:35,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:39:35,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573050390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:39:35,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:39:35,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-11-19 05:39:35,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347487969] [2021-11-19 05:39:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:39:35,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:39:35,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:39:35,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:39:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:39:35,295 INFO L87 Difference]: Start difference. First operand 17785 states and 25759 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-19 05:39:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:39:36,491 INFO L93 Difference]: Finished difference Result 35605 states and 51567 transitions. [2021-11-19 05:39:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:39:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 192 [2021-11-19 05:39:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:39:36,633 INFO L225 Difference]: With dead ends: 35605 [2021-11-19 05:39:36,634 INFO L226 Difference]: Without dead ends: 17833 [2021-11-19 05:39:36,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:39:36,736 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 6 mSDsluCounter, 6895 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8623 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:39:36,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8623 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:39:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17833 states. [2021-11-19 05:39:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17833 to 17788. [2021-11-19 05:39:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17788 states, 12279 states have (on average 1.3628145614463718) internal successors, (16734), 12684 states have internal predecessors, (16734), 4524 states have call successors, (4524), 991 states have call predecessors, (4524), 984 states have return successors, (4505), 4448 states have call predecessors, (4505), 4504 states have call successors, (4505) [2021-11-19 05:39:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 25763 transitions. [2021-11-19 05:39:38,515 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 25763 transitions. Word has length 192 [2021-11-19 05:39:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:39:38,516 INFO L470 AbstractCegarLoop]: Abstraction has 17788 states and 25763 transitions. [2021-11-19 05:39:38,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-19 05:39:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 25763 transitions. [2021-11-19 05:39:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-19 05:39:38,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:39:38,523 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:39:38,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:39:38,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:39:38,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:39:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:39:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 724073131, now seen corresponding path program 1 times [2021-11-19 05:39:38,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:39:38,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502421710] [2021-11-19 05:39:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:38,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:39:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:39:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:39:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:39:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:39:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:39:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:39:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:39:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:39:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-19 05:39:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 05:39:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-19 05:39:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-19 05:39:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-19 05:39:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-19 05:39:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:39:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 05:39:39,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:39:39,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502421710] [2021-11-19 05:39:39,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502421710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:39:39,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439829788] [2021-11-19 05:39:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:39,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:39:39,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:39:39,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:39:39,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:39:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:44,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 05:39:44,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:39:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-19 05:39:45,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:39:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 05:39:46,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439829788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:39:46,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:39:46,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-11-19 05:39:46,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500484861] [2021-11-19 05:39:46,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:39:46,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 05:39:46,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:39:46,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 05:39:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:39:46,708 INFO L87 Difference]: Start difference. First operand 17788 states and 25763 transitions. Second operand has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 05:39:48,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:39:50,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:39:52,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:40:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:40:09,957 INFO L93 Difference]: Finished difference Result 42125 states and 62737 transitions. [2021-11-19 05:40:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:40:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 197 [2021-11-19 05:40:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:40:10,213 INFO L225 Difference]: With dead ends: 42125 [2021-11-19 05:40:10,213 INFO L226 Difference]: Without dead ends: 24350 [2021-11-19 05:40:10,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:40:10,267 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 1231 mSDsluCounter, 8804 mSDsCounter, 0 mSdLazyCounter, 4290 mSolverCounterSat, 1028 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 10404 SdHoareTripleChecker+Invalid, 5321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 4290 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:40:10,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 10404 Invalid, 5321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1028 Valid, 4290 Invalid, 3 Unknown, 0 Unchecked, 21.5s Time] [2021-11-19 05:40:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24350 states. [2021-11-19 05:40:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24350 to 17794. [2021-11-19 05:40:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17794 states, 12283 states have (on average 1.3627778230074086) internal successors, (16739), 12688 states have internal predecessors, (16739), 4525 states have call successors, (4525), 992 states have call predecessors, (4525), 985 states have return successors, (4506), 4449 states have call predecessors, (4506), 4505 states have call successors, (4506) [2021-11-19 05:40:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17794 states to 17794 states and 25770 transitions. [2021-11-19 05:40:11,437 INFO L78 Accepts]: Start accepts. Automaton has 17794 states and 25770 transitions. Word has length 197 [2021-11-19 05:40:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:40:11,438 INFO L470 AbstractCegarLoop]: Abstraction has 17794 states and 25770 transitions. [2021-11-19 05:40:11,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 05:40:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17794 states and 25770 transitions. [2021-11-19 05:40:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-19 05:40:11,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:11,444 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:40:11,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:40:11,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 05:40:11,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:40:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash 218100524, now seen corresponding path program 2 times [2021-11-19 05:40:11,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:40:11,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135556974] [2021-11-19 05:40:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:11,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:40:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:40:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:40:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:40:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:40:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:40:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:40:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:40:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-19 05:40:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-19 05:40:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-19 05:40:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-19 05:40:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-19 05:40:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-19 05:40:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-11-19 05:40:12,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:40:12,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135556974] [2021-11-19 05:40:12,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135556974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:40:12,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2364843] [2021-11-19 05:40:12,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:40:12,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:40:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:40:12,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:40:12,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:40:19,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 05:40:19,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:40:19,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-19 05:40:19,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2021-11-19 05:40:21,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:40:21,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2364843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:40:21,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:40:21,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-11-19 05:40:21,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571277267] [2021-11-19 05:40:21,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:40:21,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:40:21,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:40:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:40:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:40:21,278 INFO L87 Difference]: Start difference. First operand 17794 states and 25770 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 05:40:23,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:40:25,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:40:27,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:40:29,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:40:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:40:40,234 INFO L93 Difference]: Finished difference Result 51704 states and 75452 transitions. [2021-11-19 05:40:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:40:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 202 [2021-11-19 05:40:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:40:40,624 INFO L225 Difference]: With dead ends: 51704 [2021-11-19 05:40:40,624 INFO L226 Difference]: Without dead ends: 33945 [2021-11-19 05:40:40,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2021-11-19 05:40:40,703 INFO L933 BasicCegarLoop]: 3208 mSDtfsCounter, 2506 mSDsluCounter, 31742 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 285 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 34950 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:40:40,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 34950 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 2863 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2021-11-19 05:40:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33945 states. [2021-11-19 05:40:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33945 to 30922. [2021-11-19 05:40:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30922 states, 21337 states have (on average 1.363640624267704) internal successors, (29096), 22049 states have internal predecessors, (29096), 7865 states have call successors, (7865), 1714 states have call predecessors, (7865), 1719 states have return successors, (7888), 7746 states have call predecessors, (7888), 7845 states have call successors, (7888) [2021-11-19 05:40:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30922 states to 30922 states and 44849 transitions. [2021-11-19 05:40:43,022 INFO L78 Accepts]: Start accepts. Automaton has 30922 states and 44849 transitions. Word has length 202 [2021-11-19 05:40:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:40:43,023 INFO L470 AbstractCegarLoop]: Abstraction has 30922 states and 44849 transitions. [2021-11-19 05:40:43,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 05:40:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 30922 states and 44849 transitions. [2021-11-19 05:40:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-19 05:40:43,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:43,032 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-19 05:40:43,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:40:43,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:40:43,233 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:40:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1447437160, now seen corresponding path program 1 times [2021-11-19 05:40:43,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:40:43,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277209599] [2021-11-19 05:40:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:43,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:40:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:40:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:40:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:40:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:40:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:40:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:40:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:40:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:40:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-19 05:40:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-19 05:40:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-19 05:40:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-19 05:40:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-19 05:40:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:40:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 05:40:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-19 05:40:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-19 05:40:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:40:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-19 05:40:44,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:40:44,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277209599] [2021-11-19 05:40:44,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277209599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:40:44,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057866863] [2021-11-19 05:40:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:44,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:40:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:40:44,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:40:44,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:40:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:55,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:40:55,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 116 proven. 3 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-19 05:40:56,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:40:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-19 05:40:58,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057866863] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:40:58,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:40:58,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2021-11-19 05:40:58,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399170158] [2021-11-19 05:40:58,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:40:58,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:40:58,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:40:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:40:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:40:58,384 INFO L87 Difference]: Start difference. First operand 30922 states and 44849 transitions. Second operand has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 05:41:00,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:41:02,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:41:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:20,962 INFO L93 Difference]: Finished difference Result 73366 states and 109406 transitions. [2021-11-19 05:41:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:41:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 223 [2021-11-19 05:41:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:21,349 INFO L225 Difference]: With dead ends: 73366 [2021-11-19 05:41:21,349 INFO L226 Difference]: Without dead ends: 42454 [2021-11-19 05:41:21,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 501 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 05:41:21,456 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 1913 mSDsluCounter, 10797 mSDsCounter, 0 mSdLazyCounter, 4759 mSolverCounterSat, 1894 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 12401 SdHoareTripleChecker+Invalid, 6655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1894 IncrementalHoareTripleChecker+Valid, 4759 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:21,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 12401 Invalid, 6655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1894 Valid, 4759 Invalid, 2 Unknown, 0 Unchecked, 20.0s Time] [2021-11-19 05:41:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42454 states. [2021-11-19 05:41:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42454 to 30923. [2021-11-19 05:41:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30923 states, 21338 states have (on average 1.3636704470896992) internal successors, (29098), 22050 states have internal predecessors, (29098), 7865 states have call successors, (7865), 1714 states have call predecessors, (7865), 1719 states have return successors, (7888), 7746 states have call predecessors, (7888), 7845 states have call successors, (7888) [2021-11-19 05:41:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30923 states to 30923 states and 44851 transitions. [2021-11-19 05:41:23,615 INFO L78 Accepts]: Start accepts. Automaton has 30923 states and 44851 transitions. Word has length 223 [2021-11-19 05:41:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:23,616 INFO L470 AbstractCegarLoop]: Abstraction has 30923 states and 44851 transitions. [2021-11-19 05:41:23,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 05:41:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30923 states and 44851 transitions. [2021-11-19 05:41:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 05:41:23,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:23,626 INFO L514 BasicCegarLoop]: trace histogram [15, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-19 05:41:23,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-19 05:41:23,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:41:23,839 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:41:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash 608309673, now seen corresponding path program 2 times [2021-11-19 05:41:23,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:41:23,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084989534] [2021-11-19 05:41:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:23,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:41:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:41:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:41:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:41:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:41:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 05:41:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:41:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 05:41:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:41:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:41:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:41:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:41:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:41:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:41:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 05:41:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-19 05:41:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-19 05:41:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-19 05:41:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-19 05:41:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:41:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 05:41:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-19 05:41:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-19 05:41:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 05:41:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2021-11-19 05:41:25,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:41:25,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084989534] [2021-11-19 05:41:25,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084989534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:41:25,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940212508] [2021-11-19 05:41:25,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:41:25,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:41:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:41:25,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:41:25,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f155251d-5907-430b-bad2-9575290433e9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process