./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:37:21,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:37:21,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:37:21,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:37:21,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:37:21,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:37:21,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:37:21,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:37:21,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:37:21,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:37:21,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:37:21,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:37:21,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:37:21,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:37:21,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:37:21,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:37:21,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:37:21,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:37:21,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:37:21,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:37:21,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:37:21,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:37:21,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:37:21,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:37:21,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:37:21,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:37:21,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:37:21,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:37:21,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:37:21,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:37:21,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:37:21,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:37:21,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:37:21,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:37:21,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:37:21,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:37:21,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:37:21,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:37:21,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:37:21,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:37:21,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:37:21,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-11-19 04:37:21,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:37:21,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:37:21,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:37:21,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:37:21,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:37:21,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:37:21,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:37:21,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:37:21,561 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:37:21,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:37:21,573 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:37:21,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:37:21,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:37:21,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:37:21,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:37:21,574 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:37:21,574 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:37:21,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:37:21,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:37:21,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:37:21,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:37:21,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:37:21,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:37:21,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:37:21,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:37:21,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:37:21,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:37:21,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:37:21,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:37:21,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:37:21,577 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2021-11-19 04:37:21,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:37:21,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:37:21,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:37:21,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:37:21,962 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:37:21,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2021-11-19 04:37:22,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/data/1694d534e/6268bee01e474530b773671865c215ea/FLAGc25511fdd [2021-11-19 04:37:22,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:37:22,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2021-11-19 04:37:22,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/data/1694d534e/6268bee01e474530b773671865c215ea/FLAGc25511fdd [2021-11-19 04:37:23,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/data/1694d534e/6268bee01e474530b773671865c215ea [2021-11-19 04:37:23,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:37:23,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:37:23,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:37:23,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:37:23,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:37:23,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433da264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23, skipping insertion in model container [2021-11-19 04:37:23,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:37:23,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:37:23,539 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2021-11-19 04:37:23,544 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2021-11-19 04:37:23,546 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2021-11-19 04:37:23,551 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2021-11-19 04:37:23,554 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2021-11-19 04:37:23,559 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:37:23,568 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:37:23,615 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2021-11-19 04:37:23,616 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2021-11-19 04:37:23,618 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2021-11-19 04:37:23,622 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2021-11-19 04:37:23,623 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_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2021-11-19 04:37:23,626 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:37:23,662 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:37:23,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23 WrapperNode [2021-11-19 04:37:23,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:37:23,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:37:23,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:37:23,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:37:23,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:37:23,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:37:23,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:37:23,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:37:23,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (1/1) ... [2021-11-19 04:37:23,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:37:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:23,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:37:23,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:37:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:37:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:37:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:37:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:37:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:37:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:37:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:37:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:37:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:37:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:37:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:37:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:37:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:37:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:37:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:37:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:37:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:37:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:37:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:37:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:37:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:37:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:37:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:37:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:37:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:37:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:37:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:37:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:37:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:37:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:37:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:37:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:37:23,884 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:37:23,884 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:37:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:37:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:37:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:37:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:37:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:37:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:37:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:37:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:37:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:37:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:37:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:37:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:37:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:37:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:37:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:37:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:37:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:37:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:37:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-19 04:37:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:37:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:37:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:37:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:37:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:37:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:37:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:37:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:37:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:37:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:37:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:37:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:37:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:37:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:37:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:37:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:37:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:37:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:37:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:37:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:37:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:37:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:37:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:37:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:37:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:37:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:37:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:37:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:37:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:37:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:37:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:37:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:37:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:37:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:37:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:37:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:37:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:37:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:37:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:37:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:37:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:37:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:37:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:37:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:37:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:37:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:37:24,197 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:37:24,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:37:24,735 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:37:24,748 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:37:24,751 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-19 04:37:24,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:24 BoogieIcfgContainer [2021-11-19 04:37:24,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:37:24,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:37:24,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:37:24,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:37:24,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:37:23" (1/3) ... [2021-11-19 04:37:24,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1b75c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:24, skipping insertion in model container [2021-11-19 04:37:24,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:23" (2/3) ... [2021-11-19 04:37:24,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1b75c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:24, skipping insertion in model container [2021-11-19 04:37:24,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:24" (3/3) ... [2021-11-19 04:37:24,773 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2021-11-19 04:37:24,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:37:24,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2021-11-19 04:37:24,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:37:24,837 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 04:37:24,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2021-11-19 04:37:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 83 states have (on average 2.2048192771084336) internal successors, (183), 155 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:37:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:37:24,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:24,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:24,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1035457678, now seen corresponding path program 1 times [2021-11-19 04:37:24,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:24,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456088754] [2021-11-19 04:37:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:24,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:25,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:25,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456088754] [2021-11-19 04:37:25,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456088754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:25,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:25,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:37:25,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211561339] [2021-11-19 04:37:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:25,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:37:25,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:37:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:25,184 INFO L87 Difference]: Start difference. First operand has 160 states, 83 states have (on average 2.2048192771084336) internal successors, (183), 155 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:25,495 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2021-11-19 04:37:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:37:25,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:37:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:25,510 INFO L225 Difference]: With dead ends: 194 [2021-11-19 04:37:25,510 INFO L226 Difference]: Without dead ends: 190 [2021-11-19 04:37:25,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:25,521 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 331 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:25,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 104 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:37:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-19 04:37:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2021-11-19 04:37:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 82 states have (on average 1.9146341463414633) internal successors, (157), 149 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2021-11-19 04:37:25,582 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 7 [2021-11-19 04:37:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:25,582 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2021-11-19 04:37:25,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2021-11-19 04:37:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:37:25,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:25,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:25,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:37:25,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1035457679, now seen corresponding path program 1 times [2021-11-19 04:37:25,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:25,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197953152] [2021-11-19 04:37:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:25,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:25,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:25,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197953152] [2021-11-19 04:37:25,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197953152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:25,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:25,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:37:25,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756341209] [2021-11-19 04:37:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:25,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:37:25,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:25,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:37:25,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:25,727 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:26,051 INFO L93 Difference]: Finished difference Result 189 states and 198 transitions. [2021-11-19 04:37:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:37:26,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:37:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:26,058 INFO L225 Difference]: With dead ends: 189 [2021-11-19 04:37:26,058 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 04:37:26,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:26,060 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 260 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:26,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 130 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:37:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 04:37:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 149. [2021-11-19 04:37:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 82 states have (on average 1.8658536585365855) internal successors, (153), 145 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2021-11-19 04:37:26,087 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 7 [2021-11-19 04:37:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:26,087 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2021-11-19 04:37:26,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2021-11-19 04:37:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 04:37:26,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:26,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:26,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:37:26,089 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1299257372, now seen corresponding path program 1 times [2021-11-19 04:37:26,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:26,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748190986] [2021-11-19 04:37:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:26,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:26,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:26,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748190986] [2021-11-19 04:37:26,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748190986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:26,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:26,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:37:26,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952604327] [2021-11-19 04:37:26,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:26,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:37:26,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:37:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:37:26,271 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:26,795 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2021-11-19 04:37:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:37:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 04:37:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:26,797 INFO L225 Difference]: With dead ends: 155 [2021-11-19 04:37:26,797 INFO L226 Difference]: Without dead ends: 155 [2021-11-19 04:37:26,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:37:26,799 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 250 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:26,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 107 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:37:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-19 04:37:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2021-11-19 04:37:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 91 states have (on average 1.7472527472527473) internal successors, (159), 143 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 162 transitions. [2021-11-19 04:37:26,819 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 162 transitions. Word has length 14 [2021-11-19 04:37:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:26,819 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 162 transitions. [2021-11-19 04:37:26,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 162 transitions. [2021-11-19 04:37:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 04:37:26,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:26,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:26,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:37:26,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1299257371, now seen corresponding path program 1 times [2021-11-19 04:37:26,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:26,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574016228] [2021-11-19 04:37:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:26,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:26,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:26,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574016228] [2021-11-19 04:37:26,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574016228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:26,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:26,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:37:26,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750570359] [2021-11-19 04:37:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:26,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:37:26,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:37:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:37:26,964 INFO L87 Difference]: Start difference. First operand 147 states and 162 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:27,464 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2021-11-19 04:37:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:37:27,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 04:37:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:27,466 INFO L225 Difference]: With dead ends: 143 [2021-11-19 04:37:27,466 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 04:37:27,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:37:27,468 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 139 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:27,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 151 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:37:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 04:37:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-19 04:37:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 139 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2021-11-19 04:37:27,476 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 14 [2021-11-19 04:37:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:27,477 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2021-11-19 04:37:27,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2021-11-19 04:37:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 04:37:27,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:27,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:27,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:37:27,478 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1036131901, now seen corresponding path program 1 times [2021-11-19 04:37:27,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:27,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535668712] [2021-11-19 04:37:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:27,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:27,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:27,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535668712] [2021-11-19 04:37:27,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535668712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:27,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:27,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:37:27,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045065149] [2021-11-19 04:37:27,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:27,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:37:27,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:37:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:37:27,568 INFO L87 Difference]: Start difference. First operand 143 states and 158 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:27,970 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2021-11-19 04:37:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:37:27,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 04:37:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:27,972 INFO L225 Difference]: With dead ends: 150 [2021-11-19 04:37:27,972 INFO L226 Difference]: Without dead ends: 150 [2021-11-19 04:37:27,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:37:27,974 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 243 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:27,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 107 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:37:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-19 04:37:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2021-11-19 04:37:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 91 states have (on average 1.6923076923076923) internal successors, (154), 138 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2021-11-19 04:37:27,981 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 21 [2021-11-19 04:37:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:27,981 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2021-11-19 04:37:27,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2021-11-19 04:37:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 04:37:27,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:27,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:27,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:37:27,983 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:27,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:27,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1036131902, now seen corresponding path program 1 times [2021-11-19 04:37:27,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:27,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243734530] [2021-11-19 04:37:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:27,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:28,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:28,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243734530] [2021-11-19 04:37:28,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243734530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:28,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:28,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:37:28,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577441291] [2021-11-19 04:37:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:28,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:37:28,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:37:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:37:28,138 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:28,660 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2021-11-19 04:37:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:37:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 04:37:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:28,662 INFO L225 Difference]: With dead ends: 142 [2021-11-19 04:37:28,662 INFO L226 Difference]: Without dead ends: 142 [2021-11-19 04:37:28,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:37:28,664 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 142 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:28,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 148 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:37:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-19 04:37:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2021-11-19 04:37:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 135 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2021-11-19 04:37:28,674 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 21 [2021-11-19 04:37:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:28,675 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2021-11-19 04:37:28,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2021-11-19 04:37:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 04:37:28,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:28,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:28,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:37:28,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr22REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash 287913318, now seen corresponding path program 1 times [2021-11-19 04:37:28,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:28,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846267476] [2021-11-19 04:37:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:28,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:28,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:28,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846267476] [2021-11-19 04:37:28,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846267476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:28,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:28,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:37:28,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107313262] [2021-11-19 04:37:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:28,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:37:28,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:37:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:28,772 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:28,918 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2021-11-19 04:37:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:37:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-19 04:37:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:28,924 INFO L225 Difference]: With dead ends: 145 [2021-11-19 04:37:28,924 INFO L226 Difference]: Without dead ends: 145 [2021-11-19 04:37:28,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:28,929 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 194 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:28,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 122 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:37:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-19 04:37:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2021-11-19 04:37:28,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 130 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-11-19 04:37:28,940 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 27 [2021-11-19 04:37:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:28,940 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-11-19 04:37:28,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-11-19 04:37:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 04:37:28,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:28,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:28,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:37:28,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr23REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:28,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash 287913319, now seen corresponding path program 1 times [2021-11-19 04:37:28,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:28,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613760832] [2021-11-19 04:37:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:28,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:29,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:29,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613760832] [2021-11-19 04:37:29,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613760832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:29,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:29,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:37:29,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192131996] [2021-11-19 04:37:29,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:29,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:37:29,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:37:29,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:29,054 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:29,207 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2021-11-19 04:37:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:37:29,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-19 04:37:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:29,209 INFO L225 Difference]: With dead ends: 140 [2021-11-19 04:37:29,209 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 04:37:29,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:29,210 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 184 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:29,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 119 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:37:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 04:37:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2021-11-19 04:37:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 125 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2021-11-19 04:37:29,216 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 27 [2021-11-19 04:37:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:29,217 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2021-11-19 04:37:29,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2021-11-19 04:37:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:37:29,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:29,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:29,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:37:29,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr51REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1806871348, now seen corresponding path program 1 times [2021-11-19 04:37:29,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:29,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314163001] [2021-11-19 04:37:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:29,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:29,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:29,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314163001] [2021-11-19 04:37:29,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314163001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:29,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:29,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 04:37:29,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327985642] [2021-11-19 04:37:29,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:29,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:37:29,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:29,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:37:29,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:37:29,352 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:29,736 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2021-11-19 04:37:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:37:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-19 04:37:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:29,739 INFO L225 Difference]: With dead ends: 172 [2021-11-19 04:37:29,739 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 04:37:29,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:37:29,740 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 806 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:29,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 84 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:37:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 04:37:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 131. [2021-11-19 04:37:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 94 states have (on average 1.553191489361702) internal successors, (146), 127 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2021-11-19 04:37:29,746 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 29 [2021-11-19 04:37:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:29,746 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2021-11-19 04:37:29,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2021-11-19 04:37:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:37:29,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:29,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:29,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:37:29,748 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr52REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1806871349, now seen corresponding path program 1 times [2021-11-19 04:37:29,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:29,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798803181] [2021-11-19 04:37:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:29,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:29,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:29,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798803181] [2021-11-19 04:37:29,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798803181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:29,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:29,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:37:29,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508767058] [2021-11-19 04:37:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:29,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:37:29,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:29,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:37:29,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:37:29,995 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:30,633 INFO L93 Difference]: Finished difference Result 220 states and 241 transitions. [2021-11-19 04:37:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:37:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-19 04:37:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:30,636 INFO L225 Difference]: With dead ends: 220 [2021-11-19 04:37:30,636 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 04:37:30,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:37:30,637 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 461 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:30,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 79 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 04:37:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 04:37:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 167. [2021-11-19 04:37:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 130 states have (on average 1.5461538461538462) internal successors, (201), 163 states have internal predecessors, (201), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 204 transitions. [2021-11-19 04:37:30,644 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 204 transitions. Word has length 29 [2021-11-19 04:37:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:30,645 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 204 transitions. [2021-11-19 04:37:30,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 204 transitions. [2021-11-19 04:37:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 04:37:30,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:30,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:30,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:37:30,648 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 178437886, now seen corresponding path program 1 times [2021-11-19 04:37:30,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:30,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810426104] [2021-11-19 04:37:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:30,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:30,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:30,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810426104] [2021-11-19 04:37:30,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810426104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:30,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:30,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:37:30,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590731806] [2021-11-19 04:37:30,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:30,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:37:30,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:30,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:37:30,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:30,709 INFO L87 Difference]: Start difference. First operand 167 states and 204 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:30,949 INFO L93 Difference]: Finished difference Result 205 states and 233 transitions. [2021-11-19 04:37:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:37:30,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-11-19 04:37:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:30,952 INFO L225 Difference]: With dead ends: 205 [2021-11-19 04:37:30,952 INFO L226 Difference]: Without dead ends: 205 [2021-11-19 04:37:30,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:37:30,953 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 367 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:30,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 124 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:37:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-19 04:37:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2021-11-19 04:37:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.5271317829457365) internal successors, (197), 161 states have internal predecessors, (197), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 200 transitions. [2021-11-19 04:37:30,961 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 200 transitions. Word has length 30 [2021-11-19 04:37:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:30,961 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 200 transitions. [2021-11-19 04:37:30,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 200 transitions. [2021-11-19 04:37:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 04:37:30,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:30,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:30,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 04:37:30,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr55REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:30,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1349028874, now seen corresponding path program 1 times [2021-11-19 04:37:30,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:30,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29939260] [2021-11-19 04:37:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:30,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:31,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:31,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29939260] [2021-11-19 04:37:31,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29939260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:31,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:31,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-19 04:37:31,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325344072] [2021-11-19 04:37:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:31,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 04:37:31,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 04:37:31,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-19 04:37:31,611 INFO L87 Difference]: Start difference. First operand 165 states and 200 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:33,309 INFO L93 Difference]: Finished difference Result 201 states and 232 transitions. [2021-11-19 04:37:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 04:37:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-11-19 04:37:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:33,316 INFO L225 Difference]: With dead ends: 201 [2021-11-19 04:37:33,316 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 04:37:33,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=351, Invalid=1289, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 04:37:33,318 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 364 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:33,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 128 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 04:37:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 04:37:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 171. [2021-11-19 04:37:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.4779411764705883) internal successors, (201), 167 states have internal predecessors, (201), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2021-11-19 04:37:33,334 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 33 [2021-11-19 04:37:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:33,334 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2021-11-19 04:37:33,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2021-11-19 04:37:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 04:37:33,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:33,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:33,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 04:37:33,337 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr31ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash 755626526, now seen corresponding path program 1 times [2021-11-19 04:37:33,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:33,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023288750] [2021-11-19 04:37:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:33,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:33,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:33,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:33,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023288750] [2021-11-19 04:37:33,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023288750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:33,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:33,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:37:33,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183836908] [2021-11-19 04:37:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:33,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:37:33,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:37:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:33,413 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:33,546 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2021-11-19 04:37:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:37:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-11-19 04:37:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:33,549 INFO L225 Difference]: With dead ends: 169 [2021-11-19 04:37:33,549 INFO L226 Difference]: Without dead ends: 169 [2021-11-19 04:37:33,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:33,551 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:33,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 126 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:37:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-19 04:37:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-11-19 04:37:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 135 states have (on average 1.474074074074074) internal successors, (199), 165 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2021-11-19 04:37:33,563 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 35 [2021-11-19 04:37:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:33,563 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2021-11-19 04:37:33,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2021-11-19 04:37:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 04:37:33,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:33,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:33,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 04:37:33,571 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr69ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:33,571 INFO L85 PathProgramCache]: Analyzing trace with hash -814677363, now seen corresponding path program 1 times [2021-11-19 04:37:33,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:33,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674837765] [2021-11-19 04:37:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:33,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:33,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:33,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674837765] [2021-11-19 04:37:33,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674837765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:33,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:33,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:37:33,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273795953] [2021-11-19 04:37:33,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:33,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:37:33,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:37:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:37:33,669 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:33,927 INFO L93 Difference]: Finished difference Result 205 states and 232 transitions. [2021-11-19 04:37:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:37:33,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-11-19 04:37:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:33,929 INFO L225 Difference]: With dead ends: 205 [2021-11-19 04:37:33,929 INFO L226 Difference]: Without dead ends: 205 [2021-11-19 04:37:33,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:37:33,930 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 319 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:33,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 134 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:37:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-19 04:37:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 170. [2021-11-19 04:37:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.4705882352941178) internal successors, (200), 166 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2021-11-19 04:37:33,939 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 39 [2021-11-19 04:37:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:33,941 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2021-11-19 04:37:33,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:37:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2021-11-19 04:37:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 04:37:33,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:33,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:33,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 04:37:33,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr32REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 67 more)] === [2021-11-19 04:37:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1143593272, now seen corresponding path program 1 times [2021-11-19 04:37:33,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:33,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979386599] [2021-11-19 04:37:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:33,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:37:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:37:34,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:34,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979386599] [2021-11-19 04:37:34,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979386599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:37:34,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302445360] [2021-11-19 04:37:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:34,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:37:34,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:34,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:37:34,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ded8d-658a-41d5-9ae6-7c1ea1e6db1b/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:37:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:34,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-19 04:37:34,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:37:34,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:37:34,960 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:37:34,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 04:37:35,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 04:37:35,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 04:37:35,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 04:37:35,274 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 04:37:35,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-19 04:37:35,385 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 04:37:35,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-11-19 04:37:35,820 INFO L354 Elim1Store]: treesize reduction 124, result has 26.2 percent of original size [2021-11-19 04:37:35,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 71 [2021-11-19 04:37:36,102 INFO L354 Elim1Store]: treesize reduction 88, result has 23.5 percent of original size [2021-11-19 04:37:36,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 83 treesize of output 81 [2021-11-19 04:37:36,451 INFO L354 Elim1Store]: treesize reduction 172, result has 19.2 percent of original size [2021-11-19 04:37:36,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 112 treesize of output 107 [2021-11-19 04:37:42,458 INFO L354 Elim1Store]: treesize reduction 110, result has 38.2 percent of original size [2021-11-19 04:37:42,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 145 treesize of output 191 [2021-11-19 04:37:43,449 INFO L354 Elim1Store]: treesize reduction 630, result has 11.6 percent of original size [2021-11-19 04:37:43,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 44 case distinctions, treesize of input 195 treesize of output 166