./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:47:44,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:47:44,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:47:44,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:47:44,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:47:44,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:47:44,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:47:44,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:47:44,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:47:44,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:47:44,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:47:44,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:47:44,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:47:44,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:47:44,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:47:44,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:47:44,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:47:44,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:47:44,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:47:44,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:47:44,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:47:44,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:47:44,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:47:44,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:47:44,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:47:44,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:47:44,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:47:44,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:47:44,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:47:44,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:47:44,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:47:44,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:47:44,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:47:44,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:47:44,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:47:44,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:47:44,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:47:44,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:47:44,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:47:44,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:47:44,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:47:44,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:47:44,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:47:44,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:47:44,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:47:44,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:47:44,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:47:44,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:47:44,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:47:44,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:47:44,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:47:44,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:47:44,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:47:44,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:47:44,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:47:44,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:47:44,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:47:44,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:47:44,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:47:44,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:47:44,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:47:44,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:47:44,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:47:44,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:47:44,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:47:44,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:47:44,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:47:44,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:47:44,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:47:44,527 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_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f [2021-12-06 18:47:44,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:47:44,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:47:44,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:47:44,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:47:44,710 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:47:44,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2021-12-06 18:47:44,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/data/6dc1ce5e7/dd8188c7110c4c0999eb34baa7d39152/FLAG380405315 [2021-12-06 18:47:45,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:47:45,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2021-12-06 18:47:45,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/data/6dc1ce5e7/dd8188c7110c4c0999eb34baa7d39152/FLAG380405315 [2021-12-06 18:47:45,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/data/6dc1ce5e7/dd8188c7110c4c0999eb34baa7d39152 [2021-12-06 18:47:45,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:47:45,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:47:45,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:47:45,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:47:45,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:47:45,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:47:45" (1/1) ... [2021-12-06 18:47:45,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272b81a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:45, skipping insertion in model container [2021-12-06 18:47:45,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:47:45" (1/1) ... [2021-12-06 18:47:45,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:47:46,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:47:47,398 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_f095a142-121e-43fb-8e1b-1795a836aae8/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c[382357,382370] [2021-12-06 18:47:47,418 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_f095a142-121e-43fb-8e1b-1795a836aae8/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c[383339,383352] [2021-12-06 18:47:47,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:47:47,562 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:47:48,328 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_f095a142-121e-43fb-8e1b-1795a836aae8/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c[382357,382370] [2021-12-06 18:47:48,330 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_f095a142-121e-43fb-8e1b-1795a836aae8/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c[383339,383352] [2021-12-06 18:47:48,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:47:48,389 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:47:48,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48 WrapperNode [2021-12-06 18:47:48,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:47:48,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:47:48,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:47:48,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:47:48,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:48,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:48,759 INFO L137 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2021-12-06 18:47:48,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:47:48,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:47:48,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:47:48,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:47:48,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:48,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:48,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:48,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:48,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:49,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:49,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:49,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:47:49,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:47:49,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:47:49,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:47:49,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (1/1) ... [2021-12-06 18:47:49,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:47:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:47:49,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:47:49,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:47:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:47:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 18:47:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 18:47:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 18:47:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 18:47:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 18:47:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 18:47:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 18:47:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 18:47:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 18:47:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 18:47:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:47:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 18:47:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 18:47:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:47:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:47:49,233 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:47:49,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:47:53,493 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:47:53,516 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:47:53,517 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-06 18:47:53,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:47:53 BoogieIcfgContainer [2021-12-06 18:47:53,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:47:53,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:47:53,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:47:53,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:47:53,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:47:45" (1/3) ... [2021-12-06 18:47:53,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edacc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:47:53, skipping insertion in model container [2021-12-06 18:47:53,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:48" (2/3) ... [2021-12-06 18:47:53,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edacc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:47:53, skipping insertion in model container [2021-12-06 18:47:53,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:47:53" (3/3) ... [2021-12-06 18:47:53,527 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-1.c [2021-12-06 18:47:53,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:47:53,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:47:53,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:47:53,581 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:47:53,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:47:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 18:47:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:47:53,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:53,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:53,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2021-12-06 18:47:53,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:53,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099101748] [2021-12-06 18:47:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:53,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:53,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:53,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099101748] [2021-12-06 18:47:53,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099101748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:53,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:53,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:47:53,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832248687] [2021-12-06 18:47:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:53,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:47:53,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:47:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:53,947 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:54,670 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2021-12-06 18:47:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:47:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 18:47:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:54,700 INFO L225 Difference]: With dead ends: 4802 [2021-12-06 18:47:54,701 INFO L226 Difference]: Without dead ends: 2427 [2021-12-06 18:47:54,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:47:54,714 INFO L933 BasicCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16708 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:54,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4437 Valid, 16708 Invalid, 610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-12-06 18:47:54,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2021-12-06 18:47:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-12-06 18:47:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2021-12-06 18:47:54,855 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2021-12-06 18:47:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:54,856 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2021-12-06 18:47:54,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2021-12-06 18:47:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:47:54,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:54,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:54,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:47:54,861 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2021-12-06 18:47:54,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:54,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727653265] [2021-12-06 18:47:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:54,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:54,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:54,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727653265] [2021-12-06 18:47:54,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727653265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:54,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:54,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:54,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331494143] [2021-12-06 18:47:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:54,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:54,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:54,990 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:55,383 INFO L93 Difference]: Finished difference Result 2662 states and 4765 transitions. [2021-12-06 18:47:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 18:47:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:55,396 INFO L225 Difference]: With dead ends: 2662 [2021-12-06 18:47:55,396 INFO L226 Difference]: Without dead ends: 2429 [2021-12-06 18:47:55,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:47:55,399 INFO L933 BasicCegarLoop]: 4130 mSDtfsCounter, 4303 mSDsluCounter, 12105 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4313 SdHoareTripleChecker+Valid, 16235 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:55,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4313 Valid, 16235 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-12-06 18:47:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2364. [2021-12-06 18:47:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8324720068906115) internal successors, (4255), 2325 states have internal predecessors, (4255), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-12-06 18:47:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4312 transitions. [2021-12-06 18:47:55,466 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4312 transitions. Word has length 68 [2021-12-06 18:47:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:55,466 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 4312 transitions. [2021-12-06 18:47:55,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4312 transitions. [2021-12-06 18:47:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:47:55,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:55,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:55,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:47:55,469 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2021-12-06 18:47:55,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:55,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478630895] [2021-12-06 18:47:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:55,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:55,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:55,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478630895] [2021-12-06 18:47:55,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478630895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:55,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:55,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:55,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555890182] [2021-12-06 18:47:55,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:55,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:55,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:55,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:55,545 INFO L87 Difference]: Start difference. First operand 2364 states and 4312 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:56,163 INFO L93 Difference]: Finished difference Result 2803 states and 4960 transitions. [2021-12-06 18:47:56,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:56,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 18:47:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:56,178 INFO L225 Difference]: With dead ends: 2803 [2021-12-06 18:47:56,178 INFO L226 Difference]: Without dead ends: 2570 [2021-12-06 18:47:56,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:56,180 INFO L933 BasicCegarLoop]: 4178 mSDtfsCounter, 4371 mSDsluCounter, 16296 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4380 SdHoareTripleChecker+Valid, 20474 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:56,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4380 Valid, 20474 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-12-06 18:47:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2473. [2021-12-06 18:47:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8176543721508496) internal successors, (4386), 2417 states have internal predecessors, (4386), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2021-12-06 18:47:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4467 transitions. [2021-12-06 18:47:56,272 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4467 transitions. Word has length 68 [2021-12-06 18:47:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:56,273 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4467 transitions. [2021-12-06 18:47:56,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4467 transitions. [2021-12-06 18:47:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:47:56,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:56,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:56,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:47:56,275 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2021-12-06 18:47:56,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:56,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546306783] [2021-12-06 18:47:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:56,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:56,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:56,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546306783] [2021-12-06 18:47:56,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546306783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:56,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:56,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:56,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075799621] [2021-12-06 18:47:56,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:56,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:56,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:56,363 INFO L87 Difference]: Start difference. First operand 2473 states and 4467 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:56,979 INFO L93 Difference]: Finished difference Result 3234 states and 5585 transitions. [2021-12-06 18:47:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:47:56,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 18:47:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:56,994 INFO L225 Difference]: With dead ends: 3234 [2021-12-06 18:47:56,994 INFO L226 Difference]: Without dead ends: 2892 [2021-12-06 18:47:56,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:47:56,997 INFO L933 BasicCegarLoop]: 4253 mSDtfsCounter, 4357 mSDsluCounter, 16449 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20702 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:56,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4365 Valid, 20702 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-12-06 18:47:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2680. [2021-12-06 18:47:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2586 states have (on average 1.7931167826759473) internal successors, (4637), 2592 states have internal predecessors, (4637), 58 states have call successors, (58), 30 states have call predecessors, (58), 34 states have return successors, (71), 61 states have call predecessors, (71), 58 states have call successors, (71) [2021-12-06 18:47:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4766 transitions. [2021-12-06 18:47:57,080 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4766 transitions. Word has length 68 [2021-12-06 18:47:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:57,081 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4766 transitions. [2021-12-06 18:47:57,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4766 transitions. [2021-12-06 18:47:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:47:57,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:57,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:57,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:47:57,083 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2021-12-06 18:47:57,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:57,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753563367] [2021-12-06 18:47:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:57,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:57,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:57,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753563367] [2021-12-06 18:47:57,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753563367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:57,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:57,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:57,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875622437] [2021-12-06 18:47:57,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:57,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:57,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:57,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:57,153 INFO L87 Difference]: Start difference. First operand 2680 states and 4766 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:57,725 INFO L93 Difference]: Finished difference Result 3933 states and 6590 transitions. [2021-12-06 18:47:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:47:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 18:47:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:57,740 INFO L225 Difference]: With dead ends: 3933 [2021-12-06 18:47:57,740 INFO L226 Difference]: Without dead ends: 3384 [2021-12-06 18:47:57,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:47:57,758 INFO L933 BasicCegarLoop]: 4222 mSDtfsCounter, 4359 mSDsluCounter, 16452 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 20674 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:57,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4371 Valid, 20674 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2021-12-06 18:47:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3099. [2021-12-06 18:47:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2939 states have (on average 1.7526369513439946) internal successors, (5151), 2949 states have internal predecessors, (5151), 96 states have call successors, (96), 54 states have call predecessors, (96), 62 states have return successors, (131), 103 states have call predecessors, (131), 96 states have call successors, (131) [2021-12-06 18:47:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 5378 transitions. [2021-12-06 18:47:57,849 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 5378 transitions. Word has length 68 [2021-12-06 18:47:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:57,849 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 5378 transitions. [2021-12-06 18:47:57,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 5378 transitions. [2021-12-06 18:47:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:47:57,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:57,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:57,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:47:57,851 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2021-12-06 18:47:57,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:57,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314368781] [2021-12-06 18:47:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:57,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:57,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:57,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314368781] [2021-12-06 18:47:57,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314368781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:57,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:57,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:47:57,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504133580] [2021-12-06 18:47:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:57,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:47:57,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:47:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:57,906 INFO L87 Difference]: Start difference. First operand 3099 states and 5378 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:58,342 INFO L93 Difference]: Finished difference Result 4926 states and 8067 transitions. [2021-12-06 18:47:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:47:58,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 18:47:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:58,359 INFO L225 Difference]: With dead ends: 4926 [2021-12-06 18:47:58,359 INFO L226 Difference]: Without dead ends: 3959 [2021-12-06 18:47:58,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:58,364 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 4487 mSDsluCounter, 12256 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 16548 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:58,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 16548 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2021-12-06 18:47:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3628. [2021-12-06 18:47:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3380 states have (on average 1.7079881656804734) internal successors, (5773), 3399 states have internal predecessors, (5773), 150 states have call successors, (150), 84 states have call predecessors, (150), 96 states have return successors, (195), 152 states have call predecessors, (195), 150 states have call successors, (195) [2021-12-06 18:47:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 6118 transitions. [2021-12-06 18:47:58,465 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 6118 transitions. Word has length 68 [2021-12-06 18:47:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:58,466 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 6118 transitions. [2021-12-06 18:47:58,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 6118 transitions. [2021-12-06 18:47:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 18:47:58,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:58,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:58,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:47:58,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2021-12-06 18:47:58,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:58,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055975888] [2021-12-06 18:47:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:58,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 18:47:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:47:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 18:47:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 18:47:58,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055975888] [2021-12-06 18:47:58,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055975888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:47:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863298119] [2021-12-06 18:47:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:58,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:47:58,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:47:58,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:47:58,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:47:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:47:58,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:47:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 18:47:58,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:47:58,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863298119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:58,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:47:58,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 18:47:58,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656417605] [2021-12-06 18:47:58,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:58,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:58,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:58,765 INFO L87 Difference]: Start difference. First operand 3628 states and 6118 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 18:47:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:58,863 INFO L93 Difference]: Finished difference Result 6543 states and 10338 transitions. [2021-12-06 18:47:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2021-12-06 18:47:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:58,885 INFO L225 Difference]: With dead ends: 6543 [2021-12-06 18:47:58,885 INFO L226 Difference]: Without dead ends: 5047 [2021-12-06 18:47:58,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:58,891 INFO L933 BasicCegarLoop]: 4149 mSDtfsCounter, 4097 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:58,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4097 Valid, 4307 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-12-06 18:47:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 5017. [2021-12-06 18:47:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 4545 states have (on average 1.6387238723872388) internal successors, (7448), 4581 states have internal predecessors, (7448), 280 states have call successors, (280), 166 states have call predecessors, (280), 190 states have return successors, (363), 277 states have call predecessors, (363), 280 states have call successors, (363) [2021-12-06 18:47:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 8091 transitions. [2021-12-06 18:47:59,019 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 8091 transitions. Word has length 110 [2021-12-06 18:47:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:59,020 INFO L470 AbstractCegarLoop]: Abstraction has 5017 states and 8091 transitions. [2021-12-06 18:47:59,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 18:47:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 8091 transitions. [2021-12-06 18:47:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 18:47:59,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:59,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:59,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:47:59,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:47:59,226 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2021-12-06 18:47:59,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:59,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810215055] [2021-12-06 18:47:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:59,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:47:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:47:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:47:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 18:47:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:47:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 18:47:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 18:47:59,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:59,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810215055] [2021-12-06 18:47:59,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810215055] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:47:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541036347] [2021-12-06 18:47:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:59,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:47:59,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:47:59,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:47:59,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:47:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:47:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:47:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 18:47:59,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:47:59,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541036347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:59,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:47:59,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:47:59,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176705815] [2021-12-06 18:47:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:59,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:59,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:59,517 INFO L87 Difference]: Start difference. First operand 5017 states and 8091 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:47:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:59,674 INFO L93 Difference]: Finished difference Result 10629 states and 16263 transitions. [2021-12-06 18:47:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2021-12-06 18:47:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:59,701 INFO L225 Difference]: With dead ends: 10629 [2021-12-06 18:47:59,701 INFO L226 Difference]: Without dead ends: 7745 [2021-12-06 18:47:59,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:59,709 INFO L933 BasicCegarLoop]: 4297 mSDtfsCounter, 153 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 8434 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:59,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 8434 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2021-12-06 18:47:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7745. [2021-12-06 18:47:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 6832 states have (on average 1.5654274004683841) internal successors, (10695), 6893 states have internal predecessors, (10695), 535 states have call successors, (535), 328 states have call predecessors, (535), 376 states have return successors, (786), 539 states have call predecessors, (786), 535 states have call successors, (786) [2021-12-06 18:47:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 12016 transitions. [2021-12-06 18:47:59,916 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 12016 transitions. Word has length 110 [2021-12-06 18:47:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:59,916 INFO L470 AbstractCegarLoop]: Abstraction has 7745 states and 12016 transitions. [2021-12-06 18:47:59,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:47:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 12016 transitions. [2021-12-06 18:47:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 18:47:59,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:59,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:59,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:48:00,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 18:48:00,130 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2021-12-06 18:48:00,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:00,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889578012] [2021-12-06 18:48:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:00,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 18:48:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 18:48:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 18:48:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 18:48:00,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:00,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889578012] [2021-12-06 18:48:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889578012] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:00,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882953299] [2021-12-06 18:48:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:00,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:00,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:00,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:48:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:48:00,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 18:48:00,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:00,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882953299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:00,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:00,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 18:48:00,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268872130] [2021-12-06 18:48:00,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:00,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:00,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:00,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:00,466 INFO L87 Difference]: Start difference. First operand 7745 states and 12016 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 18:48:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:00,713 INFO L93 Difference]: Finished difference Result 18721 states and 27923 transitions. [2021-12-06 18:48:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2021-12-06 18:48:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:00,747 INFO L225 Difference]: With dead ends: 18721 [2021-12-06 18:48:00,747 INFO L226 Difference]: Without dead ends: 13113 [2021-12-06 18:48:00,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:00,765 INFO L933 BasicCegarLoop]: 4158 mSDtfsCounter, 4055 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 4316 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:00,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4055 Valid, 4316 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:00,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2021-12-06 18:48:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 12999. [2021-12-06 18:48:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12999 states, 11234 states have (on average 1.5087235178921132) internal successors, (16949), 11353 states have internal predecessors, (16949), 1021 states have call successors, (1021), 646 states have call predecessors, (1021), 742 states have return successors, (1484), 1015 states have call predecessors, (1484), 1021 states have call successors, (1484) [2021-12-06 18:48:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12999 states to 12999 states and 19454 transitions. [2021-12-06 18:48:01,141 INFO L78 Accepts]: Start accepts. Automaton has 12999 states and 19454 transitions. Word has length 142 [2021-12-06 18:48:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:01,141 INFO L470 AbstractCegarLoop]: Abstraction has 12999 states and 19454 transitions. [2021-12-06 18:48:01,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 18:48:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12999 states and 19454 transitions. [2021-12-06 18:48:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 18:48:01,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:01,160 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:01,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:48:01,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:01,361 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2021-12-06 18:48:01,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:01,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785022665] [2021-12-06 18:48:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 18:48:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 18:48:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 18:48:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 18:48:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 18:48:01,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785022665] [2021-12-06 18:48:01,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785022665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978314003] [2021-12-06 18:48:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:01,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:01,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:01,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:48:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:48:01,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 18:48:01,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:01,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978314003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:01,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:01,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:01,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869014578] [2021-12-06 18:48:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:01,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:01,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:01,679 INFO L87 Difference]: Start difference. First operand 12999 states and 19454 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:02,087 INFO L93 Difference]: Finished difference Result 25137 states and 37098 transitions. [2021-12-06 18:48:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:02,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2021-12-06 18:48:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:02,126 INFO L225 Difference]: With dead ends: 25137 [2021-12-06 18:48:02,126 INFO L226 Difference]: Without dead ends: 14273 [2021-12-06 18:48:02,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:02,153 INFO L933 BasicCegarLoop]: 4136 mSDtfsCounter, 4074 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:02,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4074 Valid, 4170 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14273 states. [2021-12-06 18:48:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273. [2021-12-06 18:48:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 12392 states have (on average 1.452792123950936) internal successors, (18003), 12511 states have internal predecessors, (18003), 1051 states have call successors, (1051), 732 states have call predecessors, (1051), 828 states have return successors, (1522), 1045 states have call predecessors, (1522), 1051 states have call successors, (1522) [2021-12-06 18:48:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 20576 transitions. [2021-12-06 18:48:02,574 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 20576 transitions. Word has length 159 [2021-12-06 18:48:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:02,575 INFO L470 AbstractCegarLoop]: Abstraction has 14273 states and 20576 transitions. [2021-12-06 18:48:02,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 20576 transitions. [2021-12-06 18:48:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 18:48:02,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:02,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:02,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:48:02,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:48:02,795 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2021-12-06 18:48:02,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:02,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904052590] [2021-12-06 18:48:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:02,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 18:48:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 18:48:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 18:48:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 18:48:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 18:48:02,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:02,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904052590] [2021-12-06 18:48:02,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904052590] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:02,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119366949] [2021-12-06 18:48:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:02,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:02,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:02,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:48:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:02,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 18:48:03,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:03,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119366949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:03,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:03,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:03,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071567236] [2021-12-06 18:48:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:03,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:03,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:03,073 INFO L87 Difference]: Start difference. First operand 14273 states and 20576 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:03,468 INFO L93 Difference]: Finished difference Result 23524 states and 33192 transitions. [2021-12-06 18:48:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:03,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2021-12-06 18:48:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:03,499 INFO L225 Difference]: With dead ends: 23524 [2021-12-06 18:48:03,500 INFO L226 Difference]: Without dead ends: 15133 [2021-12-06 18:48:03,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:03,517 INFO L933 BasicCegarLoop]: 4158 mSDtfsCounter, 4087 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4323 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:03,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4087 Valid, 4323 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2021-12-06 18:48:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 15057. [2021-12-06 18:48:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15057 states, 13112 states have (on average 1.4276235509456987) internal successors, (18719), 13231 states have internal predecessors, (18719), 1063 states have call successors, (1063), 784 states have call predecessors, (1063), 880 states have return successors, (1586), 1057 states have call predecessors, (1586), 1063 states have call successors, (1586) [2021-12-06 18:48:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15057 states to 15057 states and 21368 transitions. [2021-12-06 18:48:03,958 INFO L78 Accepts]: Start accepts. Automaton has 15057 states and 21368 transitions. Word has length 159 [2021-12-06 18:48:03,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:03,959 INFO L470 AbstractCegarLoop]: Abstraction has 15057 states and 21368 transitions. [2021-12-06 18:48:03,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15057 states and 21368 transitions. [2021-12-06 18:48:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 18:48:03,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:03,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:04,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:48:04,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:04,179 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2021-12-06 18:48:04,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227422998] [2021-12-06 18:48:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:04,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 18:48:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 18:48:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 18:48:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:48:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-06 18:48:04,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:04,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227422998] [2021-12-06 18:48:04,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227422998] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:04,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918094599] [2021-12-06 18:48:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:04,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:04,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:04,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:04,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:48:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:04,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:04,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 18:48:04,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:04,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918094599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:04,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:04,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:04,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33325666] [2021-12-06 18:48:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:04,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:04,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:04,477 INFO L87 Difference]: Start difference. First operand 15057 states and 21368 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:05,064 INFO L93 Difference]: Finished difference Result 39229 states and 54558 transitions. [2021-12-06 18:48:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:05,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2021-12-06 18:48:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:05,124 INFO L225 Difference]: With dead ends: 39229 [2021-12-06 18:48:05,125 INFO L226 Difference]: Without dead ends: 26311 [2021-12-06 18:48:05,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:05,149 INFO L933 BasicCegarLoop]: 4171 mSDtfsCounter, 4101 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:05,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4101 Valid, 4332 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:05,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26311 states. [2021-12-06 18:48:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26311 to 25917. [2021-12-06 18:48:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25917 states, 22254 states have (on average 1.3840657859261256) internal successors, (30801), 22491 states have internal predecessors, (30801), 2013 states have call successors, (2013), 1456 states have call predecessors, (2013), 1648 states have return successors, (3594), 2001 states have call predecessors, (3594), 2013 states have call successors, (3594) [2021-12-06 18:48:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25917 states to 25917 states and 36408 transitions. [2021-12-06 18:48:06,010 INFO L78 Accepts]: Start accepts. Automaton has 25917 states and 36408 transitions. Word has length 160 [2021-12-06 18:48:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:06,010 INFO L470 AbstractCegarLoop]: Abstraction has 25917 states and 36408 transitions. [2021-12-06 18:48:06,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 25917 states and 36408 transitions. [2021-12-06 18:48:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 18:48:06,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:06,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:06,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:48:06,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 18:48:06,249 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2021-12-06 18:48:06,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:06,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926400050] [2021-12-06 18:48:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:06,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 18:48:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 18:48:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:48:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 18:48:06,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926400050] [2021-12-06 18:48:06,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926400050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920365605] [2021-12-06 18:48:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:06,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:06,369 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:06,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:48:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:06,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:48:06,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 18:48:06,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:06,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920365605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:06,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:06,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:06,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597705174] [2021-12-06 18:48:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:06,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:06,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:06,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:06,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:06,557 INFO L87 Difference]: Start difference. First operand 25917 states and 36408 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:07,245 INFO L93 Difference]: Finished difference Result 43629 states and 61363 transitions. [2021-12-06 18:48:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2021-12-06 18:48:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:07,286 INFO L225 Difference]: With dead ends: 43629 [2021-12-06 18:48:07,286 INFO L226 Difference]: Without dead ends: 24283 [2021-12-06 18:48:07,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:07,306 INFO L933 BasicCegarLoop]: 4135 mSDtfsCounter, 4088 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:07,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4088 Valid, 4168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24283 states. [2021-12-06 18:48:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24283 to 18907. [2021-12-06 18:48:07,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18907 states, 16412 states have (on average 1.364550329027541) internal successors, (22395), 16541 states have internal predecessors, (22395), 1365 states have call successors, (1365), 1032 states have call predecessors, (1365), 1128 states have return successors, (2238), 1349 states have call predecessors, (2238), 1365 states have call successors, (2238) [2021-12-06 18:48:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18907 states to 18907 states and 25998 transitions. [2021-12-06 18:48:07,954 INFO L78 Accepts]: Start accepts. Automaton has 18907 states and 25998 transitions. Word has length 160 [2021-12-06 18:48:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:07,954 INFO L470 AbstractCegarLoop]: Abstraction has 18907 states and 25998 transitions. [2021-12-06 18:48:07,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 18907 states and 25998 transitions. [2021-12-06 18:48:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 18:48:07,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:07,967 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:07,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:48:08,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 18:48:08,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2021-12-06 18:48:08,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:08,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162641427] [2021-12-06 18:48:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:08,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 18:48:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 18:48:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:48:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 18:48:08,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162641427] [2021-12-06 18:48:08,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162641427] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886618303] [2021-12-06 18:48:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:08,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:08,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:08,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:08,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:48:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:08,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:08,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:48:08,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:08,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886618303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:08,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:08,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:08,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230931753] [2021-12-06 18:48:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:08,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:08,462 INFO L87 Difference]: Start difference. First operand 18907 states and 25998 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:09,388 INFO L93 Difference]: Finished difference Result 50861 states and 68966 transitions. [2021-12-06 18:48:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:09,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2021-12-06 18:48:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:09,453 INFO L225 Difference]: With dead ends: 50861 [2021-12-06 18:48:09,453 INFO L226 Difference]: Without dead ends: 34101 [2021-12-06 18:48:09,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:09,476 INFO L933 BasicCegarLoop]: 4179 mSDtfsCounter, 4097 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:09,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4097 Valid, 4339 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34101 states. [2021-12-06 18:48:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34101 to 33235. [2021-12-06 18:48:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33235 states, 28504 states have (on average 1.3202708391804658) internal successors, (37633), 28761 states have internal predecessors, (37633), 2601 states have call successors, (2601), 1936 states have call predecessors, (2601), 2128 states have return successors, (5060), 2569 states have call predecessors, (5060), 2601 states have call successors, (5060) [2021-12-06 18:48:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33235 states to 33235 states and 45294 transitions. [2021-12-06 18:48:10,730 INFO L78 Accepts]: Start accepts. Automaton has 33235 states and 45294 transitions. Word has length 160 [2021-12-06 18:48:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 33235 states and 45294 transitions. [2021-12-06 18:48:10,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 33235 states and 45294 transitions. [2021-12-06 18:48:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 18:48:10,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:10,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:10,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 18:48:10,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 18:48:10,959 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2021-12-06 18:48:10,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:10,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866660258] [2021-12-06 18:48:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:10,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 18:48:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 18:48:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 18:48:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:48:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-06 18:48:11,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:11,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866660258] [2021-12-06 18:48:11,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866660258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:11,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:11,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:48:11,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447905030] [2021-12-06 18:48:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:11,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:11,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:11,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:48:11,043 INFO L87 Difference]: Start difference. First operand 33235 states and 45294 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 18:48:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:12,214 INFO L93 Difference]: Finished difference Result 63233 states and 84327 transitions. [2021-12-06 18:48:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:48:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2021-12-06 18:48:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:12,283 INFO L225 Difference]: With dead ends: 63233 [2021-12-06 18:48:12,283 INFO L226 Difference]: Without dead ends: 32143 [2021-12-06 18:48:12,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:12,328 INFO L933 BasicCegarLoop]: 4134 mSDtfsCounter, 280 mSDsluCounter, 12008 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 16142 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:12,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 16142 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32143 states. [2021-12-06 18:48:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32143 to 30151. [2021-12-06 18:48:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30151 states, 26072 states have (on average 1.321762810678122) internal successors, (34461), 26585 states have internal predecessors, (34461), 1981 states have call successors, (1981), 1488 states have call predecessors, (1981), 2096 states have return successors, (4149), 2093 states have call predecessors, (4149), 1981 states have call successors, (4149) [2021-12-06 18:48:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30151 states to 30151 states and 40591 transitions. [2021-12-06 18:48:13,511 INFO L78 Accepts]: Start accepts. Automaton has 30151 states and 40591 transitions. Word has length 160 [2021-12-06 18:48:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:13,511 INFO L470 AbstractCegarLoop]: Abstraction has 30151 states and 40591 transitions. [2021-12-06 18:48:13,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 18:48:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 30151 states and 40591 transitions. [2021-12-06 18:48:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 18:48:13,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:13,532 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:13,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:48:13,532 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -809968940, now seen corresponding path program 1 times [2021-12-06 18:48:13,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:13,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455641174] [2021-12-06 18:48:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:13,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 18:48:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 18:48:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:48:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 18:48:13,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:13,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455641174] [2021-12-06 18:48:13,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455641174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:13,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:13,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:48:13,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608489859] [2021-12-06 18:48:13,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:13,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:13,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:48:13,583 INFO L87 Difference]: Start difference. First operand 30151 states and 40591 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 18:48:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:14,702 INFO L93 Difference]: Finished difference Result 52785 states and 69916 transitions. [2021-12-06 18:48:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:48:14,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2021-12-06 18:48:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:14,755 INFO L225 Difference]: With dead ends: 52785 [2021-12-06 18:48:14,756 INFO L226 Difference]: Without dead ends: 24771 [2021-12-06 18:48:14,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:14,789 INFO L933 BasicCegarLoop]: 4133 mSDtfsCounter, 280 mSDsluCounter, 12007 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 16140 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:14,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 16140 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24771 states. [2021-12-06 18:48:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24771 to 22913. [2021-12-06 18:48:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22913 states, 19932 states have (on average 1.3432169375877985) internal successors, (26773), 20291 states have internal predecessors, (26773), 1455 states have call successors, (1455), 1100 states have call predecessors, (1455), 1524 states have return successors, (2819), 1529 states have call predecessors, (2819), 1455 states have call successors, (2819) [2021-12-06 18:48:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22913 states to 22913 states and 31047 transitions. [2021-12-06 18:48:15,795 INFO L78 Accepts]: Start accepts. Automaton has 22913 states and 31047 transitions. Word has length 160 [2021-12-06 18:48:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:15,795 INFO L470 AbstractCegarLoop]: Abstraction has 22913 states and 31047 transitions. [2021-12-06 18:48:15,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 18:48:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 22913 states and 31047 transitions. [2021-12-06 18:48:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 18:48:15,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:15,810 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:15,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:48:15,811 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1498858591, now seen corresponding path program 1 times [2021-12-06 18:48:15,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:15,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082220858] [2021-12-06 18:48:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:15,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 18:48:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 18:48:15,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:15,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082220858] [2021-12-06 18:48:15,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082220858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:15,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494592295] [2021-12-06 18:48:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:15,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:15,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:15,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:48:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:15,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:15,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:48:16,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:16,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494592295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:16,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:16,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:16,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326985260] [2021-12-06 18:48:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:16,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:16,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:16,052 INFO L87 Difference]: Start difference. First operand 22913 states and 31047 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:48:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:16,795 INFO L93 Difference]: Finished difference Result 36753 states and 50507 transitions. [2021-12-06 18:48:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:16,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2021-12-06 18:48:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:16,836 INFO L225 Difference]: With dead ends: 36753 [2021-12-06 18:48:16,836 INFO L226 Difference]: Without dead ends: 23011 [2021-12-06 18:48:16,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:16,862 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 129 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 8379 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:16,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 8379 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23011 states. [2021-12-06 18:48:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23011 to 22913. [2021-12-06 18:48:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22913 states, 19932 states have (on average 1.3233493879189244) internal successors, (26377), 20291 states have internal predecessors, (26377), 1455 states have call successors, (1455), 1100 states have call predecessors, (1455), 1524 states have return successors, (2819), 1529 states have call predecessors, (2819), 1455 states have call successors, (2819) [2021-12-06 18:48:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22913 states to 22913 states and 30651 transitions. [2021-12-06 18:48:17,748 INFO L78 Accepts]: Start accepts. Automaton has 22913 states and 30651 transitions. Word has length 162 [2021-12-06 18:48:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:17,748 INFO L470 AbstractCegarLoop]: Abstraction has 22913 states and 30651 transitions. [2021-12-06 18:48:17,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:48:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 22913 states and 30651 transitions. [2021-12-06 18:48:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 18:48:17,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:17,763 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:17,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 18:48:17,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 18:48:17,965 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1871536255, now seen corresponding path program 1 times [2021-12-06 18:48:17,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:17,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078796172] [2021-12-06 18:48:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:17,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 18:48:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 18:48:18,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078796172] [2021-12-06 18:48:18,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078796172] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172332635] [2021-12-06 18:48:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:18,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:18,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:18,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:48:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:18,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:48:18,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 18:48:18,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:18,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172332635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:18,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:18,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:18,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947088261] [2021-12-06 18:48:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:18,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:18,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:18,222 INFO L87 Difference]: Start difference. First operand 22913 states and 30651 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:18,977 INFO L93 Difference]: Finished difference Result 40677 states and 54485 transitions. [2021-12-06 18:48:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2021-12-06 18:48:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:19,014 INFO L225 Difference]: With dead ends: 40677 [2021-12-06 18:48:19,014 INFO L226 Difference]: Without dead ends: 21107 [2021-12-06 18:48:19,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:19,037 INFO L933 BasicCegarLoop]: 4134 mSDtfsCounter, 4109 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4109 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:19,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4109 Valid, 4166 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21107 states. [2021-12-06 18:48:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21107 to 20341. [2021-12-06 18:48:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 17776 states have (on average 1.2984360936093609) internal successors, (23081), 18072 states have internal predecessors, (23081), 1259 states have call successors, (1259), 952 states have call predecessors, (1259), 1304 states have return successors, (2297), 1320 states have call predecessors, (2297), 1259 states have call successors, (2297) [2021-12-06 18:48:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 26637 transitions. [2021-12-06 18:48:19,795 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 26637 transitions. Word has length 162 [2021-12-06 18:48:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:19,795 INFO L470 AbstractCegarLoop]: Abstraction has 20341 states and 26637 transitions. [2021-12-06 18:48:19,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 26637 transitions. [2021-12-06 18:48:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 18:48:19,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:19,805 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:19,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:48:20,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 18:48:20,006 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1892311936, now seen corresponding path program 1 times [2021-12-06 18:48:20,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:20,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303298014] [2021-12-06 18:48:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:20,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 18:48:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 18:48:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-06 18:48:20,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303298014] [2021-12-06 18:48:20,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303298014] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732947882] [2021-12-06 18:48:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:20,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:20,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:20,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:48:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:20,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:20,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 18:48:20,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:20,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732947882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:20,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:20,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:20,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694698944] [2021-12-06 18:48:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:20,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:20,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:20,240 INFO L87 Difference]: Start difference. First operand 20341 states and 26637 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:48:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:21,188 INFO L93 Difference]: Finished difference Result 33349 states and 43971 transitions. [2021-12-06 18:48:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2021-12-06 18:48:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:21,230 INFO L225 Difference]: With dead ends: 33349 [2021-12-06 18:48:21,230 INFO L226 Difference]: Without dead ends: 20431 [2021-12-06 18:48:21,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:21,254 INFO L933 BasicCegarLoop]: 4269 mSDtfsCounter, 122 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 8382 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:21,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 8382 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20431 states. [2021-12-06 18:48:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20431 to 20341. [2021-12-06 18:48:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 17776 states have (on average 1.2742461746174618) internal successors, (22651), 18072 states have internal predecessors, (22651), 1259 states have call successors, (1259), 952 states have call predecessors, (1259), 1304 states have return successors, (2297), 1320 states have call predecessors, (2297), 1259 states have call successors, (2297) [2021-12-06 18:48:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 26207 transitions. [2021-12-06 18:48:22,071 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 26207 transitions. Word has length 162 [2021-12-06 18:48:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:22,071 INFO L470 AbstractCegarLoop]: Abstraction has 20341 states and 26207 transitions. [2021-12-06 18:48:22,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:48:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 26207 transitions. [2021-12-06 18:48:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 18:48:22,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:22,081 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:22,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:48:22,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:22,282 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1316943992, now seen corresponding path program 1 times [2021-12-06 18:48:22,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:22,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776794488] [2021-12-06 18:48:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:22,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 18:48:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 18:48:22,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:22,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776794488] [2021-12-06 18:48:22,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776794488] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:22,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481753948] [2021-12-06 18:48:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:22,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:22,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:22,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:22,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:48:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:22,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 18:48:22,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:22,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481753948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:22,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:22,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:22,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823451526] [2021-12-06 18:48:22,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:22,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:22,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:22,539 INFO L87 Difference]: Start difference. First operand 20341 states and 26207 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:23,244 INFO L93 Difference]: Finished difference Result 28874 states and 37303 transitions. [2021-12-06 18:48:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:23,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2021-12-06 18:48:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:23,277 INFO L225 Difference]: With dead ends: 28874 [2021-12-06 18:48:23,277 INFO L226 Difference]: Without dead ends: 20371 [2021-12-06 18:48:23,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:23,292 INFO L933 BasicCegarLoop]: 4245 mSDtfsCounter, 143 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 8362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:23,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 8362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-12-06 18:48:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 20341. [2021-12-06 18:48:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 17776 states have (on average 1.2653577857785778) internal successors, (22493), 18072 states have internal predecessors, (22493), 1259 states have call successors, (1259), 952 states have call predecessors, (1259), 1304 states have return successors, (2297), 1320 states have call predecessors, (2297), 1259 states have call successors, (2297) [2021-12-06 18:48:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 26049 transitions. [2021-12-06 18:48:24,067 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 26049 transitions. Word has length 163 [2021-12-06 18:48:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:24,067 INFO L470 AbstractCegarLoop]: Abstraction has 20341 states and 26049 transitions. [2021-12-06 18:48:24,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 18:48:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 26049 transitions. [2021-12-06 18:48:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 18:48:24,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:24,077 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:24,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:48:24,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:24,277 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1712947354, now seen corresponding path program 1 times [2021-12-06 18:48:24,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:24,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397201797] [2021-12-06 18:48:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:24,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 18:48:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:48:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 18:48:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 18:48:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-06 18:48:24,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:24,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397201797] [2021-12-06 18:48:24,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397201797] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:24,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070946134] [2021-12-06 18:48:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:24,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:24,352 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:24,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:48:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:24,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:48:24,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 18:48:24,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:24,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070946134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:24,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:24,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:24,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368575456] [2021-12-06 18:48:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:24,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:24,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:24,523 INFO L87 Difference]: Start difference. First operand 20341 states and 26049 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:48:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:25,253 INFO L93 Difference]: Finished difference Result 33261 states and 41719 transitions. [2021-12-06 18:48:25,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:25,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2021-12-06 18:48:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:25,285 INFO L225 Difference]: With dead ends: 33261 [2021-12-06 18:48:25,285 INFO L226 Difference]: Without dead ends: 20343 [2021-12-06 18:48:25,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:25,298 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 124 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 8390 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:25,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 8390 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20343 states. [2021-12-06 18:48:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20343 to 20341. [2021-12-06 18:48:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 17776 states have (on average 1.2624887488748875) internal successors, (22442), 18072 states have internal predecessors, (22442), 1259 states have call successors, (1259), 952 states have call predecessors, (1259), 1304 states have return successors, (2276), 1320 states have call predecessors, (2276), 1259 states have call successors, (2276) [2021-12-06 18:48:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 25977 transitions. [2021-12-06 18:48:26,072 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 25977 transitions. Word has length 163 [2021-12-06 18:48:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:26,073 INFO L470 AbstractCegarLoop]: Abstraction has 20341 states and 25977 transitions. [2021-12-06 18:48:26,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:48:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 25977 transitions. [2021-12-06 18:48:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 18:48:26,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:26,082 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:26,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 18:48:26,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:26,283 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -349035639, now seen corresponding path program 1 times [2021-12-06 18:48:26,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:26,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631970970] [2021-12-06 18:48:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:26,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:48:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 18:48:26,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:26,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631970970] [2021-12-06 18:48:26,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631970970] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:26,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816228813] [2021-12-06 18:48:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:26,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:26,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:26,382 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:26,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 18:48:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:26,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:48:26,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 18:48:26,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:26,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816228813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:26,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:26,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2021-12-06 18:48:26,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904339701] [2021-12-06 18:48:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:26,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:26,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:48:26,601 INFO L87 Difference]: Start difference. First operand 20341 states and 25977 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:27,475 INFO L93 Difference]: Finished difference Result 38507 states and 48102 transitions. [2021-12-06 18:48:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:48:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 18:48:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:27,511 INFO L225 Difference]: With dead ends: 38507 [2021-12-06 18:48:27,511 INFO L226 Difference]: Without dead ends: 20305 [2021-12-06 18:48:27,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:48:27,535 INFO L933 BasicCegarLoop]: 4109 mSDtfsCounter, 4132 mSDsluCounter, 8085 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4141 SdHoareTripleChecker+Valid, 12194 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:27,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4141 Valid, 12194 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20305 states. [2021-12-06 18:48:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20305 to 20305. [2021-12-06 18:48:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20305 states, 17740 states have (on average 1.2474633596392333) internal successors, (22130), 18036 states have internal predecessors, (22130), 1259 states have call successors, (1259), 952 states have call predecessors, (1259), 1304 states have return successors, (2276), 1320 states have call predecessors, (2276), 1259 states have call successors, (2276) [2021-12-06 18:48:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20305 states to 20305 states and 25665 transitions. [2021-12-06 18:48:28,388 INFO L78 Accepts]: Start accepts. Automaton has 20305 states and 25665 transitions. Word has length 164 [2021-12-06 18:48:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:28,388 INFO L470 AbstractCegarLoop]: Abstraction has 20305 states and 25665 transitions. [2021-12-06 18:48:28,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:28,388 INFO L276 IsEmpty]: Start isEmpty. Operand 20305 states and 25665 transitions. [2021-12-06 18:48:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 18:48:28,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:28,397 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:28,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 18:48:28,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 18:48:28,599 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:28,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1441670841, now seen corresponding path program 1 times [2021-12-06 18:48:28,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:28,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277327647] [2021-12-06 18:48:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:28,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 18:48:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:48:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 18:48:28,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277327647] [2021-12-06 18:48:28,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277327647] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968041059] [2021-12-06 18:48:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:28,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:28,676 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:28,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 18:48:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:28,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:48:28,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-06 18:48:28,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:28,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968041059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:28,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:28,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 18:48:28,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51144605] [2021-12-06 18:48:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:28,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:28,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:48:28,851 INFO L87 Difference]: Start difference. First operand 20305 states and 25665 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:29,643 INFO L93 Difference]: Finished difference Result 32632 states and 40743 transitions. [2021-12-06 18:48:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:48:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 18:48:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:29,667 INFO L225 Difference]: With dead ends: 32632 [2021-12-06 18:48:29,668 INFO L226 Difference]: Without dead ends: 14459 [2021-12-06 18:48:29,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:48:29,690 INFO L933 BasicCegarLoop]: 4125 mSDtfsCounter, 87 mSDsluCounter, 12399 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 16524 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:29,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 16524 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14459 states. [2021-12-06 18:48:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14459 to 13762. [2021-12-06 18:48:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13762 states, 12045 states have (on average 1.2704856787048568) internal successors, (15303), 12230 states have internal predecessors, (15303), 848 states have call successors, (848), 648 states have call predecessors, (848), 867 states have return successors, (1373), 885 states have call predecessors, (1373), 848 states have call successors, (1373) [2021-12-06 18:48:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13762 states to 13762 states and 17524 transitions. [2021-12-06 18:48:30,291 INFO L78 Accepts]: Start accepts. Automaton has 13762 states and 17524 transitions. Word has length 164 [2021-12-06 18:48:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:30,291 INFO L470 AbstractCegarLoop]: Abstraction has 13762 states and 17524 transitions. [2021-12-06 18:48:30,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 13762 states and 17524 transitions. [2021-12-06 18:48:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 18:48:30,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:30,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:30,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-06 18:48:30,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 18:48:30,497 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:30,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash 468634376, now seen corresponding path program 1 times [2021-12-06 18:48:30,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:30,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427422499] [2021-12-06 18:48:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:30,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:48:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:48:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 18:48:30,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427422499] [2021-12-06 18:48:30,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427422499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684491100] [2021-12-06 18:48:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:30,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:30,584 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:30,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 18:48:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:30,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:48:30,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 18:48:30,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:30,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684491100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:30,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:30,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 18:48:30,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781103671] [2021-12-06 18:48:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:30,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:30,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:48:30,752 INFO L87 Difference]: Start difference. First operand 13762 states and 17524 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:31,311 INFO L93 Difference]: Finished difference Result 25284 states and 31345 transitions. [2021-12-06 18:48:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:48:31,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 18:48:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:31,333 INFO L225 Difference]: With dead ends: 25284 [2021-12-06 18:48:31,333 INFO L226 Difference]: Without dead ends: 13654 [2021-12-06 18:48:31,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:48:31,348 INFO L933 BasicCegarLoop]: 4124 mSDtfsCounter, 49 mSDsluCounter, 12386 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16510 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:31,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16510 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2021-12-06 18:48:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 13318. [2021-12-06 18:48:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13318 states, 11623 states have (on average 1.2582809945797127) internal successors, (14625), 11793 states have internal predecessors, (14625), 848 states have call successors, (848), 648 states have call predecessors, (848), 845 states have return successors, (1275), 878 states have call predecessors, (1275), 848 states have call successors, (1275) [2021-12-06 18:48:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13318 states to 13318 states and 16748 transitions. [2021-12-06 18:48:31,905 INFO L78 Accepts]: Start accepts. Automaton has 13318 states and 16748 transitions. Word has length 164 [2021-12-06 18:48:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:31,905 INFO L470 AbstractCegarLoop]: Abstraction has 13318 states and 16748 transitions. [2021-12-06 18:48:31,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13318 states and 16748 transitions. [2021-12-06 18:48:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 18:48:31,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:31,910 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:31,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 18:48:32,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 18:48:32,112 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1060818162, now seen corresponding path program 1 times [2021-12-06 18:48:32,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:32,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751905319] [2021-12-06 18:48:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:32,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 18:48:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 18:48:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:48:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:48:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 18:48:32,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751905319] [2021-12-06 18:48:32,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751905319] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332983105] [2021-12-06 18:48:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:32,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:32,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:32,192 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:32,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 18:48:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:32,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:48:32,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-06 18:48:32,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:32,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332983105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:32,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:32,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 18:48:32,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354737341] [2021-12-06 18:48:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:32,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:32,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:32,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:48:32,369 INFO L87 Difference]: Start difference. First operand 13318 states and 16748 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:32,862 INFO L93 Difference]: Finished difference Result 22320 states and 27307 transitions. [2021-12-06 18:48:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:48:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 18:48:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:32,877 INFO L225 Difference]: With dead ends: 22320 [2021-12-06 18:48:32,877 INFO L226 Difference]: Without dead ends: 11134 [2021-12-06 18:48:32,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:48:32,886 INFO L933 BasicCegarLoop]: 4124 mSDtfsCounter, 10 mSDsluCounter, 12371 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16495 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:32,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16495 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11134 states. [2021-12-06 18:48:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11134 to 11094. [2021-12-06 18:48:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11094 states, 9786 states have (on average 1.2682403433476395) internal successors, (12411), 9871 states have internal predecessors, (12411), 684 states have call successors, (684), 520 states have call predecessors, (684), 622 states have return successors, (896), 704 states have call predecessors, (896), 684 states have call successors, (896) [2021-12-06 18:48:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11094 states to 11094 states and 13991 transitions. [2021-12-06 18:48:33,346 INFO L78 Accepts]: Start accepts. Automaton has 11094 states and 13991 transitions. Word has length 164 [2021-12-06 18:48:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:33,346 INFO L470 AbstractCegarLoop]: Abstraction has 11094 states and 13991 transitions. [2021-12-06 18:48:33,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 18:48:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 11094 states and 13991 transitions. [2021-12-06 18:48:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-06 18:48:33,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:33,351 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:33,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 18:48:33,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:33,553 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash -283314742, now seen corresponding path program 1 times [2021-12-06 18:48:33,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235345324] [2021-12-06 18:48:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:33,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 18:48:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:48:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:48:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:48:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 18:48:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-06 18:48:33,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:33,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235345324] [2021-12-06 18:48:33,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235345324] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:33,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918919576] [2021-12-06 18:48:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:33,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:33,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:33,642 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:33,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 18:48:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:33,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:48:33,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 18:48:33,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:33,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918919576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:33,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:33,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 18:48:33,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47452833] [2021-12-06 18:48:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:33,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:33,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:33,830 INFO L87 Difference]: Start difference. First operand 11094 states and 13991 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 18:48:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:34,069 INFO L93 Difference]: Finished difference Result 14092 states and 17355 transitions. [2021-12-06 18:48:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 201 [2021-12-06 18:48:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:34,077 INFO L225 Difference]: With dead ends: 14092 [2021-12-06 18:48:34,077 INFO L226 Difference]: Without dead ends: 4934 [2021-12-06 18:48:34,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:34,085 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 124 mSDsluCounter, 4104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 8346 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:34,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 8346 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4934 states. [2021-12-06 18:48:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4934 to 4934. [2021-12-06 18:48:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4508 states have (on average 1.4605146406388643) internal successors, (6584), 4529 states have internal predecessors, (6584), 238 states have call successors, (238), 170 states have call predecessors, (238), 186 states have return successors, (263), 236 states have call predecessors, (263), 238 states have call successors, (263) [2021-12-06 18:48:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 7085 transitions. [2021-12-06 18:48:34,231 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 7085 transitions. Word has length 201 [2021-12-06 18:48:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:34,231 INFO L470 AbstractCegarLoop]: Abstraction has 4934 states and 7085 transitions. [2021-12-06 18:48:34,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 18:48:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 7085 transitions. [2021-12-06 18:48:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-06 18:48:34,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:34,234 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:34,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 18:48:34,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f095a142-121e-43fb-8e1b-1795a836aae8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:34,435 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1365254827, now seen corresponding path program 1 times [2021-12-06 18:48:34,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:34,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105859096] [2021-12-06 18:48:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:34,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 18:48:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:48:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 18:48:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 18:48:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 18:48:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 18:48:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 18:48:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 18:48:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 18:48:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 18:48:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 18:48:34,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:34,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105859096] [2021-12-06 18:48:34,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105859096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:34,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:34,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:48:34,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976514176] [2021-12-06 18:48:34,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:34,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:48:34,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:48:34,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:48:34,550 INFO L87 Difference]: Start difference. First operand 4934 states and 7085 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 18:48:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:35,206 INFO L93 Difference]: Finished difference Result 5110 states and 7269 transitions. [2021-12-06 18:48:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:48:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 202 [2021-12-06 18:48:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:35,210 INFO L225 Difference]: With dead ends: 5110 [2021-12-06 18:48:35,210 INFO L226 Difference]: Without dead ends: 2123 [2021-12-06 18:48:35,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:48:35,212 INFO L933 BasicCegarLoop]: 4272 mSDtfsCounter, 4620 mSDsluCounter, 16367 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 20639 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:35,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4653 Valid, 20639 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:48:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2021-12-06 18:48:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2021-12-06 18:48:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2021-12-06 18:48:35,231 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 202 [2021-12-06 18:48:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:35,231 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2021-12-06 18:48:35,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 18:48:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2021-12-06 18:48:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1692 [2021-12-06 18:48:35,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:35,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:35,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 18:48:35,247 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -392702449, now seen corresponding path program 1 times [2021-12-06 18:48:35,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:35,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280358349] [2021-12-06 18:48:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:35,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:35,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:35,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280358349] [2021-12-06 18:48:35,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280358349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:35,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:35,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:48:35,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589155616] [2021-12-06 18:48:35,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:35,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:35,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:35,956 INFO L87 Difference]: Start difference. First operand 2123 states and 3959 transitions. Second operand has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:39,680 INFO L93 Difference]: Finished difference Result 6058 states and 11375 transitions. [2021-12-06 18:48:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1691 [2021-12-06 18:48:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:39,686 INFO L225 Difference]: With dead ends: 6058 [2021-12-06 18:48:39,686 INFO L226 Difference]: Without dead ends: 3938 [2021-12-06 18:48:39,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:39,688 INFO L933 BasicCegarLoop]: 1264 mSDtfsCounter, 576 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 2591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 7542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2591 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:39,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 1418 Invalid, 7542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2591 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 18:48:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-12-06 18:48:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3922. [2021-12-06 18:48:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3921 states have (on average 1.7309359857179292) internal successors, (6787), 3921 states have internal predecessors, (6787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6787 transitions. [2021-12-06 18:48:39,723 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6787 transitions. Word has length 1691 [2021-12-06 18:48:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:39,724 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 6787 transitions. [2021-12-06 18:48:39,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6787 transitions. [2021-12-06 18:48:39,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2021-12-06 18:48:39,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:39,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:39,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 18:48:39,742 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1724111650, now seen corresponding path program 1 times [2021-12-06 18:48:39,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528683749] [2021-12-06 18:48:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:39,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:40,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528683749] [2021-12-06 18:48:40,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528683749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:40,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:40,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:48:40,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421273105] [2021-12-06 18:48:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:40,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:40,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:40,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:40,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:40,170 INFO L87 Difference]: Start difference. First operand 3922 states and 6787 transitions. Second operand has 3 states, 3 states have (on average 567.3333333333334) internal successors, (1702), 2 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:43,731 INFO L93 Difference]: Finished difference Result 11273 states and 19664 transitions. [2021-12-06 18:48:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 567.3333333333334) internal successors, (1702), 2 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1702 [2021-12-06 18:48:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:43,738 INFO L225 Difference]: With dead ends: 11273 [2021-12-06 18:48:43,739 INFO L226 Difference]: Without dead ends: 7354 [2021-12-06 18:48:43,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:43,742 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 2704 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 2374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2374 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:43,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2704 Valid, 1698 Invalid, 6848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2374 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 18:48:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2021-12-06 18:48:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7352. [2021-12-06 18:48:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 7351 states have (on average 1.5521697728200246) internal successors, (11410), 7351 states have internal predecessors, (11410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 11410 transitions. [2021-12-06 18:48:43,801 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 11410 transitions. Word has length 1702 [2021-12-06 18:48:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:43,801 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 11410 transitions. [2021-12-06 18:48:43,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 567.3333333333334) internal successors, (1702), 2 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 11410 transitions. [2021-12-06 18:48:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2021-12-06 18:48:43,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:43,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:43,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 18:48:43,821 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1364008172, now seen corresponding path program 1 times [2021-12-06 18:48:43,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:43,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975628689] [2021-12-06 18:48:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:43,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 18:48:44,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:44,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975628689] [2021-12-06 18:48:44,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975628689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:44,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:44,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:48:44,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415650602] [2021-12-06 18:48:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:44,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:44,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:44,257 INFO L87 Difference]: Start difference. First operand 7352 states and 11410 transitions. Second operand has 3 states, 3 states have (on average 571.0) internal successors, (1713), 2 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:47,981 INFO L93 Difference]: Finished difference Result 21496 states and 33473 transitions. [2021-12-06 18:48:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:47,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 571.0) internal successors, (1713), 2 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1720 [2021-12-06 18:48:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:47,993 INFO L225 Difference]: With dead ends: 21496 [2021-12-06 18:48:47,993 INFO L226 Difference]: Without dead ends: 14147 [2021-12-06 18:48:47,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:47,997 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 3172 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 2130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3172 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 6903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2130 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:47,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3172 Valid, 1171 Invalid, 6903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2130 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 18:48:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14147 states. [2021-12-06 18:48:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14147 to 14147. [2021-12-06 18:48:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14147 states, 14146 states have (on average 1.4807719496677505) internal successors, (20947), 14146 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14147 states to 14147 states and 20947 transitions. [2021-12-06 18:48:48,113 INFO L78 Accepts]: Start accepts. Automaton has 14147 states and 20947 transitions. Word has length 1720 [2021-12-06 18:48:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:48,113 INFO L470 AbstractCegarLoop]: Abstraction has 14147 states and 20947 transitions. [2021-12-06 18:48:48,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.0) internal successors, (1713), 2 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 14147 states and 20947 transitions. [2021-12-06 18:48:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2021-12-06 18:48:48,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:48,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:48,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 18:48:48,139 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1866362777, now seen corresponding path program 1 times [2021-12-06 18:48:48,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:48,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452198145] [2021-12-06 18:48:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:48,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:48,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452198145] [2021-12-06 18:48:48,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452198145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:48,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:48,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:48:48,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864092633] [2021-12-06 18:48:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:48,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:48,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:48,622 INFO L87 Difference]: Start difference. First operand 14147 states and 20947 transitions. Second operand has 3 states, 3 states have (on average 598.6666666666666) internal successors, (1796), 2 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:52,291 INFO L93 Difference]: Finished difference Result 35094 states and 51444 transitions. [2021-12-06 18:48:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 598.6666666666666) internal successors, (1796), 2 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1796 [2021-12-06 18:48:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:52,309 INFO L225 Difference]: With dead ends: 35094 [2021-12-06 18:48:52,309 INFO L226 Difference]: Without dead ends: 20950 [2021-12-06 18:48:52,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:52,318 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 2419 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4815 mSolverCounterSat, 1700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1700 IncrementalHoareTripleChecker+Valid, 4815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:52,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2419 Valid, 1817 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1700 Valid, 4815 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 18:48:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20950 states. [2021-12-06 18:48:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20950 to 20949. [2021-12-06 18:48:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20949 states, 20948 states have (on average 1.2382566354783273) internal successors, (25939), 20948 states have internal predecessors, (25939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20949 states to 20949 states and 25939 transitions. [2021-12-06 18:48:52,491 INFO L78 Accepts]: Start accepts. Automaton has 20949 states and 25939 transitions. Word has length 1796 [2021-12-06 18:48:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:52,492 INFO L470 AbstractCegarLoop]: Abstraction has 20949 states and 25939 transitions. [2021-12-06 18:48:52,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.6666666666666) internal successors, (1796), 2 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20949 states and 25939 transitions. [2021-12-06 18:48:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1801 [2021-12-06 18:48:52,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:52,520 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:52,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 18:48:52,520 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1373398464, now seen corresponding path program 1 times [2021-12-06 18:48:52,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:52,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272368503] [2021-12-06 18:48:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:52,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 18:48:53,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272368503] [2021-12-06 18:48:53,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272368503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:53,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:53,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:48:53,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433451479] [2021-12-06 18:48:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:53,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:53,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:53,269 INFO L87 Difference]: Start difference. First operand 20949 states and 25939 transitions. Second operand has 3 states, 3 states have (on average 564.3333333333334) internal successors, (1693), 2 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:57,104 INFO L93 Difference]: Finished difference Result 62285 states and 77083 transitions. [2021-12-06 18:48:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 564.3333333333334) internal successors, (1693), 2 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1800 [2021-12-06 18:48:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:57,140 INFO L225 Difference]: With dead ends: 62285 [2021-12-06 18:48:57,140 INFO L226 Difference]: Without dead ends: 41339 [2021-12-06 18:48:57,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:57,157 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 157 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 5871 mSolverCounterSat, 1398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 7269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1398 IncrementalHoareTripleChecker+Valid, 5871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:57,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 2409 Invalid, 7269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1398 Valid, 5871 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 18:48:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41339 states. [2021-12-06 18:48:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41339 to 39631. [2021-12-06 18:48:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39631 states, 39630 states have (on average 1.174160989149634) internal successors, (46532), 39630 states have internal predecessors, (46532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39631 states to 39631 states and 46532 transitions. [2021-12-06 18:48:57,488 INFO L78 Accepts]: Start accepts. Automaton has 39631 states and 46532 transitions. Word has length 1800 [2021-12-06 18:48:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:57,490 INFO L470 AbstractCegarLoop]: Abstraction has 39631 states and 46532 transitions. [2021-12-06 18:48:57,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 564.3333333333334) internal successors, (1693), 2 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 39631 states and 46532 transitions. [2021-12-06 18:48:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1856 [2021-12-06 18:48:57,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:57,529 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:57,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 18:48:57,529 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1896895504, now seen corresponding path program 1 times [2021-12-06 18:48:57,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:57,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654111072] [2021-12-06 18:48:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:57,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:58,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654111072] [2021-12-06 18:48:58,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654111072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:58,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:58,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:48:58,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225659009] [2021-12-06 18:48:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:58,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:58,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:58,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:58,052 INFO L87 Difference]: Start difference. First operand 39631 states and 46532 transitions. Second operand has 3 states, 3 states have (on average 618.3333333333334) internal successors, (1855), 3 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:02,274 INFO L93 Difference]: Finished difference Result 113298 states and 133362 transitions. [2021-12-06 18:49:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:02,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 618.3333333333334) internal successors, (1855), 3 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1855 [2021-12-06 18:49:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:02,338 INFO L225 Difference]: With dead ends: 113298 [2021-12-06 18:49:02,338 INFO L226 Difference]: Without dead ends: 73670 [2021-12-06 18:49:02,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:02,355 INFO L933 BasicCegarLoop]: 3980 mSDtfsCounter, 1694 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 5446 mSolverCounterSat, 1889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1889 IncrementalHoareTripleChecker+Valid, 5446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:02,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 4219 Invalid, 7335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1889 Valid, 5446 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 18:49:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73670 states. [2021-12-06 18:49:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73670 to 71906. [2021-12-06 18:49:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71906 states, 71905 states have (on average 1.1324108198317224) internal successors, (81426), 71905 states have internal predecessors, (81426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71906 states to 71906 states and 81426 transitions. [2021-12-06 18:49:02,950 INFO L78 Accepts]: Start accepts. Automaton has 71906 states and 81426 transitions. Word has length 1855 [2021-12-06 18:49:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:02,950 INFO L470 AbstractCegarLoop]: Abstraction has 71906 states and 81426 transitions. [2021-12-06 18:49:02,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 618.3333333333334) internal successors, (1855), 3 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 71906 states and 81426 transitions. [2021-12-06 18:49:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1903 [2021-12-06 18:49:03,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:03,012 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:03,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 18:49:03,012 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -248850531, now seen corresponding path program 1 times [2021-12-06 18:49:03,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:03,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505157874] [2021-12-06 18:49:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:03,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 18:49:03,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:03,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505157874] [2021-12-06 18:49:03,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505157874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:03,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:03,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:03,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366058753] [2021-12-06 18:49:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:03,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:03,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:03,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:03,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:03,539 INFO L87 Difference]: Start difference. First operand 71906 states and 81426 transitions. Second operand has 3 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:07,678 INFO L93 Difference]: Finished difference Result 182873 states and 208668 transitions. [2021-12-06 18:49:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:07,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1902 [2021-12-06 18:49:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:07,779 INFO L225 Difference]: With dead ends: 182873 [2021-12-06 18:49:07,779 INFO L226 Difference]: Without dead ends: 110970 [2021-12-06 18:49:07,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:07,795 INFO L933 BasicCegarLoop]: 3636 mSDtfsCounter, 2049 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 4781 mSolverCounterSat, 2201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 6982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2201 IncrementalHoareTripleChecker+Valid, 4781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:07,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2049 Valid, 3873 Invalid, 6982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2201 Valid, 4781 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 18:49:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110970 states. [2021-12-06 18:49:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110970 to 105864. [2021-12-06 18:49:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105864 states, 105863 states have (on average 1.111001955357396) internal successors, (117614), 105863 states have internal predecessors, (117614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105864 states to 105864 states and 117614 transitions. [2021-12-06 18:49:08,692 INFO L78 Accepts]: Start accepts. Automaton has 105864 states and 117614 transitions. Word has length 1902 [2021-12-06 18:49:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:08,692 INFO L470 AbstractCegarLoop]: Abstraction has 105864 states and 117614 transitions. [2021-12-06 18:49:08,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 105864 states and 117614 transitions. [2021-12-06 18:49:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1983 [2021-12-06 18:49:08,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:08,766 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:08,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 18:49:08,766 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash 771340454, now seen corresponding path program 1 times [2021-12-06 18:49:08,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:08,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806998034] [2021-12-06 18:49:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:08,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 18:49:09,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806998034] [2021-12-06 18:49:09,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806998034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:09,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:09,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:09,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375163552] [2021-12-06 18:49:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:09,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:09,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:09,360 INFO L87 Difference]: Start difference. First operand 105864 states and 117614 transitions. Second operand has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:13,534 INFO L93 Difference]: Finished difference Result 257595 states and 285107 transitions. [2021-12-06 18:49:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:13,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1982 [2021-12-06 18:49:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:13,688 INFO L225 Difference]: With dead ends: 257595 [2021-12-06 18:49:13,688 INFO L226 Difference]: Without dead ends: 151734 [2021-12-06 18:49:13,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:13,748 INFO L933 BasicCegarLoop]: 1512 mSDtfsCounter, 1900 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 5800 mSolverCounterSat, 1260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 7060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1260 IncrementalHoareTripleChecker+Valid, 5800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:13,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 1675 Invalid, 7060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1260 Valid, 5800 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 18:49:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151734 states. [2021-12-06 18:49:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151734 to 146613. [2021-12-06 18:49:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146613 states, 146612 states have (on average 1.0801162251384606) internal successors, (158358), 146612 states have internal predecessors, (158358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146613 states to 146613 states and 158358 transitions. [2021-12-06 18:49:15,095 INFO L78 Accepts]: Start accepts. Automaton has 146613 states and 158358 transitions. Word has length 1982 [2021-12-06 18:49:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:15,096 INFO L470 AbstractCegarLoop]: Abstraction has 146613 states and 158358 transitions. [2021-12-06 18:49:15,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 146613 states and 158358 transitions. [2021-12-06 18:49:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2048 [2021-12-06 18:49:15,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:15,203 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:15,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 18:49:15,203 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash 801931031, now seen corresponding path program 1 times [2021-12-06 18:49:15,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:15,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705951488] [2021-12-06 18:49:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:15,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-06 18:49:16,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:16,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705951488] [2021-12-06 18:49:16,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705951488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:16,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:16,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:16,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300545921] [2021-12-06 18:49:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:16,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:16,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:16,030 INFO L87 Difference]: Start difference. First operand 146613 states and 158358 transitions. Second operand has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:20,460 INFO L93 Difference]: Finished difference Result 315307 states and 340794 transitions. [2021-12-06 18:49:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2047 [2021-12-06 18:49:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:20,640 INFO L225 Difference]: With dead ends: 315307 [2021-12-06 18:49:20,641 INFO L226 Difference]: Without dead ends: 168697 [2021-12-06 18:49:20,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:20,692 INFO L933 BasicCegarLoop]: 3265 mSDtfsCounter, 1874 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4877 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 6699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 4877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:20,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1874 Valid, 3450 Invalid, 6699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1822 Valid, 4877 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 18:49:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168697 states. [2021-12-06 18:49:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168697 to 153398. [2021-12-06 18:49:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153398 states, 153397 states have (on average 1.0771918616400582) internal successors, (165238), 153397 states have internal predecessors, (165238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153398 states to 153398 states and 165238 transitions. [2021-12-06 18:49:22,124 INFO L78 Accepts]: Start accepts. Automaton has 153398 states and 165238 transitions. Word has length 2047 [2021-12-06 18:49:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:22,125 INFO L470 AbstractCegarLoop]: Abstraction has 153398 states and 165238 transitions. [2021-12-06 18:49:22,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 153398 states and 165238 transitions. [2021-12-06 18:49:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2074 [2021-12-06 18:49:22,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:22,378 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:22,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 18:49:22,378 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:22,379 INFO L85 PathProgramCache]: Analyzing trace with hash -638783846, now seen corresponding path program 1 times [2021-12-06 18:49:22,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:22,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675475355] [2021-12-06 18:49:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:22,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 18:49:23,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675475355] [2021-12-06 18:49:23,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675475355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:23,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:23,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:23,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826546109] [2021-12-06 18:49:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:23,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:23,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:23,098 INFO L87 Difference]: Start difference. First operand 153398 states and 165238 transitions. Second operand has 3 states, 3 states have (on average 625.0) internal successors, (1875), 3 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:27,818 INFO L93 Difference]: Finished difference Result 351004 states and 379108 transitions. [2021-12-06 18:49:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:27,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 625.0) internal successors, (1875), 3 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2073 [2021-12-06 18:49:27,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:28,088 INFO L225 Difference]: With dead ends: 351004 [2021-12-06 18:49:28,088 INFO L226 Difference]: Without dead ends: 197609 [2021-12-06 18:49:28,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:28,120 INFO L933 BasicCegarLoop]: 3657 mSDtfsCounter, 1825 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 6103 mSolverCounterSat, 835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 6938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 6103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:28,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 3849 Invalid, 6938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [835 Valid, 6103 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 18:49:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197609 states. [2021-12-06 18:49:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197609 to 190763. [2021-12-06 18:49:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190763 states, 190762 states have (on average 1.0780711043079858) internal successors, (205655), 190762 states have internal predecessors, (205655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190763 states to 190763 states and 205655 transitions. [2021-12-06 18:49:29,804 INFO L78 Accepts]: Start accepts. Automaton has 190763 states and 205655 transitions. Word has length 2073 [2021-12-06 18:49:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:29,805 INFO L470 AbstractCegarLoop]: Abstraction has 190763 states and 205655 transitions. [2021-12-06 18:49:29,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 625.0) internal successors, (1875), 3 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 190763 states and 205655 transitions. [2021-12-06 18:49:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2258 [2021-12-06 18:49:30,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:30,075 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:30,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 18:49:30,075 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1462866573, now seen corresponding path program 1 times [2021-12-06 18:49:30,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:30,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749610150] [2021-12-06 18:49:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:30,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-06 18:49:30,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:30,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749610150] [2021-12-06 18:49:30,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749610150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:30,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:30,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:49:30,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306822235] [2021-12-06 18:49:30,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:30,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:30,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:30,895 INFO L87 Difference]: Start difference. First operand 190763 states and 205655 transitions. Second operand has 3 states, 3 states have (on average 711.0) internal successors, (2133), 2 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:35,021 INFO L93 Difference]: Finished difference Result 415487 states and 447273 transitions. [2021-12-06 18:49:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:35,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 711.0) internal successors, (2133), 2 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2257 [2021-12-06 18:49:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:35,293 INFO L225 Difference]: With dead ends: 415487 [2021-12-06 18:49:35,293 INFO L226 Difference]: Without dead ends: 222989 [2021-12-06 18:49:35,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:35,352 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 1611 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4490 mSolverCounterSat, 1344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 5834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 4490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:35,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1611 Valid, 2198 Invalid, 5834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1344 Valid, 4490 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 18:49:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222989 states. [2021-12-06 18:49:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222989 to 222989. [2021-12-06 18:49:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222989 states, 222988 states have (on average 1.0390424596839292) internal successors, (231694), 222988 states have internal predecessors, (231694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222989 states to 222989 states and 231694 transitions. [2021-12-06 18:49:37,459 INFO L78 Accepts]: Start accepts. Automaton has 222989 states and 231694 transitions. Word has length 2257 [2021-12-06 18:49:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:37,460 INFO L470 AbstractCegarLoop]: Abstraction has 222989 states and 231694 transitions. [2021-12-06 18:49:37,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 711.0) internal successors, (2133), 2 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 222989 states and 231694 transitions. [2021-12-06 18:49:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2261 [2021-12-06 18:49:37,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:37,781 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:37,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 18:49:37,783 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -154123679, now seen corresponding path program 1 times [2021-12-06 18:49:37,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:37,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403154605] [2021-12-06 18:49:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:37,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 902 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2021-12-06 18:49:38,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:38,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403154605] [2021-12-06 18:49:38,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403154605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:38,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:38,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:38,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058502818] [2021-12-06 18:49:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:38,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:38,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:38,697 INFO L87 Difference]: Start difference. First operand 222989 states and 231694 transitions. Second operand has 3 states, 3 states have (on average 651.0) internal successors, (1953), 3 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:42,857 INFO L93 Difference]: Finished difference Result 527481 states and 548654 transitions. [2021-12-06 18:49:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:42,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 651.0) internal successors, (1953), 3 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2260 [2021-12-06 18:49:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:43,208 INFO L225 Difference]: With dead ends: 527481 [2021-12-06 18:49:43,208 INFO L226 Difference]: Without dead ends: 304495 [2021-12-06 18:49:43,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:43,397 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 2410 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:43,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 936 Invalid, 5105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 18:49:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304495 states. [2021-12-06 18:49:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304495 to 304490. [2021-12-06 18:49:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304490 states, 304489 states have (on average 1.0349634962182541) internal successors, (315135), 304489 states have internal predecessors, (315135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304490 states to 304490 states and 315135 transitions. [2021-12-06 18:49:46,228 INFO L78 Accepts]: Start accepts. Automaton has 304490 states and 315135 transitions. Word has length 2260 [2021-12-06 18:49:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:46,229 INFO L470 AbstractCegarLoop]: Abstraction has 304490 states and 315135 transitions. [2021-12-06 18:49:46,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.0) internal successors, (1953), 3 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 304490 states and 315135 transitions. [2021-12-06 18:49:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2294 [2021-12-06 18:49:46,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:46,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:46,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 18:49:46,539 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 561525883, now seen corresponding path program 1 times [2021-12-06 18:49:46,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:46,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038905839] [2021-12-06 18:49:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:46,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-06 18:49:47,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:47,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038905839] [2021-12-06 18:49:47,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038905839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:47,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:47,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:47,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658577820] [2021-12-06 18:49:47,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:47,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:47,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:47,366 INFO L87 Difference]: Start difference. First operand 304490 states and 315135 transitions. Second operand has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:51,977 INFO L93 Difference]: Finished difference Result 673523 states and 697389 transitions. [2021-12-06 18:49:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:51,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2293 [2021-12-06 18:49:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:52,365 INFO L225 Difference]: With dead ends: 673523 [2021-12-06 18:49:52,365 INFO L226 Difference]: Without dead ends: 369036 [2021-12-06 18:49:52,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:52,417 INFO L933 BasicCegarLoop]: 3040 mSDtfsCounter, 1431 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:52,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3284 Invalid, 5148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 18:49:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369036 states. [2021-12-06 18:49:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369036 to 362217. [2021-12-06 18:49:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362217 states, 362216 states have (on average 1.0307661726704507) internal successors, (373360), 362216 states have internal predecessors, (373360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362217 states to 362217 states and 373360 transitions. [2021-12-06 18:49:56,038 INFO L78 Accepts]: Start accepts. Automaton has 362217 states and 373360 transitions. Word has length 2293 [2021-12-06 18:49:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:56,038 INFO L470 AbstractCegarLoop]: Abstraction has 362217 states and 373360 transitions. [2021-12-06 18:49:56,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 362217 states and 373360 transitions. [2021-12-06 18:49:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2317 [2021-12-06 18:49:56,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:56,401 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:56,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 18:49:56,401 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1489134407, now seen corresponding path program 1 times [2021-12-06 18:49:56,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:56,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138398496] [2021-12-06 18:49:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:56,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 998 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-06 18:49:57,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:57,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138398496] [2021-12-06 18:49:57,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138398496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:57,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:57,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:57,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028139694] [2021-12-06 18:49:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:57,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:57,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:57,257 INFO L87 Difference]: Start difference. First operand 362217 states and 373360 transitions. Second operand has 3 states, 3 states have (on average 724.6666666666666) internal successors, (2174), 3 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:01,688 INFO L93 Difference]: Finished difference Result 746518 states and 769480 transitions. [2021-12-06 18:50:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:50:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 724.6666666666666) internal successors, (2174), 3 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2316 [2021-12-06 18:50:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:02,128 INFO L225 Difference]: With dead ends: 746518 [2021-12-06 18:50:02,129 INFO L226 Difference]: Without dead ends: 382597 [2021-12-06 18:50:02,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:02,232 INFO L933 BasicCegarLoop]: 3029 mSDtfsCounter, 1546 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 4537 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 4923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 4537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:02,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 3245 Invalid, 4923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 4537 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 18:50:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382597 states. [2021-12-06 18:50:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382597 to 365610. [2021-12-06 18:50:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365610 states, 365609 states have (on average 1.0298871198466122) internal successors, (376536), 365609 states have internal predecessors, (376536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365610 states to 365610 states and 376536 transitions. [2021-12-06 18:50:06,036 INFO L78 Accepts]: Start accepts. Automaton has 365610 states and 376536 transitions. Word has length 2316 [2021-12-06 18:50:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:06,037 INFO L470 AbstractCegarLoop]: Abstraction has 365610 states and 376536 transitions. [2021-12-06 18:50:06,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 724.6666666666666) internal successors, (2174), 3 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 365610 states and 376536 transitions. [2021-12-06 18:50:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2321 [2021-12-06 18:50:06,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:06,260 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:06,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 18:50:06,260 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:06,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1403128206, now seen corresponding path program 1 times [2021-12-06 18:50:06,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:06,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509589040] [2021-12-06 18:50:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:06,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 686 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-06 18:50:07,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:07,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509589040] [2021-12-06 18:50:07,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509589040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:07,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:07,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:50:07,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456584828] [2021-12-06 18:50:07,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:07,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:50:07,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:50:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:07,154 INFO L87 Difference]: Start difference. First operand 365610 states and 376536 transitions. Second operand has 3 states, 3 states have (on average 732.0) internal successors, (2196), 3 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:11,779 INFO L93 Difference]: Finished difference Result 783876 states and 807623 transitions. [2021-12-06 18:50:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:50:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 732.0) internal successors, (2196), 3 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2320 [2021-12-06 18:50:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:12,299 INFO L225 Difference]: With dead ends: 783876 [2021-12-06 18:50:12,299 INFO L226 Difference]: Without dead ends: 414862 [2021-12-06 18:50:12,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:12,412 INFO L933 BasicCegarLoop]: 2958 mSDtfsCounter, 1801 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 4570 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 5093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 4570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:12,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1801 Valid, 3182 Invalid, 5093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 4570 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 18:50:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414862 states. [2021-12-06 18:50:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414862 to 411443. [2021-12-06 18:50:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411443 states, 411442 states have (on average 1.0275324347052561) internal successors, (422770), 411442 states have internal predecessors, (422770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411443 states to 411443 states and 422770 transitions. [2021-12-06 18:50:16,477 INFO L78 Accepts]: Start accepts. Automaton has 411443 states and 422770 transitions. Word has length 2320 [2021-12-06 18:50:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:16,478 INFO L470 AbstractCegarLoop]: Abstraction has 411443 states and 422770 transitions. [2021-12-06 18:50:16,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 732.0) internal successors, (2196), 3 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 411443 states and 422770 transitions. [2021-12-06 18:50:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2397 [2021-12-06 18:50:16,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:16,936 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:16,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-06 18:50:16,937 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1168327604, now seen corresponding path program 1 times [2021-12-06 18:50:16,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:16,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493638004] [2021-12-06 18:50:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:16,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 734 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-12-06 18:50:17,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493638004] [2021-12-06 18:50:17,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493638004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:17,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:17,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:50:17,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120498338] [2021-12-06 18:50:17,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:17,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:50:17,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:50:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:50:17,891 INFO L87 Difference]: Start difference. First operand 411443 states and 422770 transitions. Second operand has 4 states, 4 states have (on average 538.25) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:24,033 INFO L93 Difference]: Finished difference Result 824609 states and 847282 transitions. [2021-12-06 18:50:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:50:24,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 538.25) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2396 [2021-12-06 18:50:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:24,533 INFO L225 Difference]: With dead ends: 824609 [2021-12-06 18:50:24,533 INFO L226 Difference]: Without dead ends: 411468 [2021-12-06 18:50:24,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:50:24,648 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 3720 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 8718 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 9307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 8718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:24,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3720 Valid, 1180 Invalid, 9307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 8718 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-06 18:50:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411468 states. [2021-12-06 18:50:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411468 to 408046. [2021-12-06 18:50:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408046 states, 408045 states have (on average 1.0273303189599186) internal successors, (419197), 408045 states have internal predecessors, (419197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408046 states to 408046 states and 419197 transitions. [2021-12-06 18:50:28,561 INFO L78 Accepts]: Start accepts. Automaton has 408046 states and 419197 transitions. Word has length 2396 [2021-12-06 18:50:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:28,562 INFO L470 AbstractCegarLoop]: Abstraction has 408046 states and 419197 transitions. [2021-12-06 18:50:28,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 538.25) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 408046 states and 419197 transitions. [2021-12-06 18:50:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2408 [2021-12-06 18:50:28,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:28,792 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:28,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-06 18:50:28,792 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:28,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -107042649, now seen corresponding path program 1 times [2021-12-06 18:50:28,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631864041] [2021-12-06 18:50:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:28,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-06 18:50:30,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631864041] [2021-12-06 18:50:30,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631864041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:30,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:30,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:50:30,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022488161] [2021-12-06 18:50:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:30,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:50:30,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:30,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:50:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:50:30,574 INFO L87 Difference]: Start difference. First operand 408046 states and 419197 transitions. Second operand has 5 states, 5 states have (on average 433.2) internal successors, (2166), 4 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:41,734 INFO L93 Difference]: Finished difference Result 922999 states and 948281 transitions. [2021-12-06 18:50:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:50:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 433.2) internal successors, (2166), 4 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2407 [2021-12-06 18:50:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:42,363 INFO L225 Difference]: With dead ends: 922999 [2021-12-06 18:50:42,363 INFO L226 Difference]: Without dead ends: 509900 [2021-12-06 18:50:42,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:50:42,497 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 5662 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 17552 mSolverCounterSat, 1819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 19371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1819 IncrementalHoareTripleChecker+Valid, 17552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:42,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 1461 Invalid, 19371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1819 Valid, 17552 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-12-06 18:50:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509900 states. [2021-12-06 18:50:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509900 to 408018. [2021-12-06 18:50:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408018 states, 408017 states have (on average 1.02300394346314) internal successors, (417403), 408017 states have internal predecessors, (417403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408018 states to 408018 states and 417403 transitions. [2021-12-06 18:50:46,837 INFO L78 Accepts]: Start accepts. Automaton has 408018 states and 417403 transitions. Word has length 2407 [2021-12-06 18:50:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:46,839 INFO L470 AbstractCegarLoop]: Abstraction has 408018 states and 417403 transitions. [2021-12-06 18:50:46,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 433.2) internal successors, (2166), 4 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 408018 states and 417403 transitions. [2021-12-06 18:50:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2562 [2021-12-06 18:50:47,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:47,263 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:47,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-06 18:50:47,264 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -820317484, now seen corresponding path program 1 times [2021-12-06 18:50:47,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:47,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393722400] [2021-12-06 18:50:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:47,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 1131 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-12-06 18:50:48,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:48,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393722400] [2021-12-06 18:50:48,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393722400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:48,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:48,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:50:48,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262890697] [2021-12-06 18:50:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:48,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:50:48,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:50:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:48,215 INFO L87 Difference]: Start difference. First operand 408018 states and 417403 transitions. Second operand has 3 states, 3 states have (on average 750.6666666666666) internal successors, (2252), 3 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:50:52,850 INFO L93 Difference]: Finished difference Result 816037 states and 834809 transitions. [2021-12-06 18:50:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:50:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 750.6666666666666) internal successors, (2252), 3 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2561 [2021-12-06 18:50:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:50:53,480 INFO L225 Difference]: With dead ends: 816037 [2021-12-06 18:50:53,480 INFO L226 Difference]: Without dead ends: 408022 [2021-12-06 18:50:53,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:53,562 INFO L933 BasicCegarLoop]: 2833 mSDtfsCounter, 1757 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 4376 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 4726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 4376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:50:53,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1757 Valid, 3111 Invalid, 4726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 4376 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 18:50:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408022 states. [2021-12-06 18:50:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408022 to 408018. [2021-12-06 18:50:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408018 states, 408017 states have (on average 1.0185286397380502) internal successors, (415577), 408017 states have internal predecessors, (415577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408018 states to 408018 states and 415577 transitions. [2021-12-06 18:50:57,432 INFO L78 Accepts]: Start accepts. Automaton has 408018 states and 415577 transitions. Word has length 2561 [2021-12-06 18:50:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:50:57,433 INFO L470 AbstractCegarLoop]: Abstraction has 408018 states and 415577 transitions. [2021-12-06 18:50:57,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 750.6666666666666) internal successors, (2252), 3 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:50:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 408018 states and 415577 transitions. [2021-12-06 18:50:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2564 [2021-12-06 18:50:57,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:50:57,896 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:50:57,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-06 18:50:57,896 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:50:57,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:50:57,897 INFO L85 PathProgramCache]: Analyzing trace with hash 300300250, now seen corresponding path program 1 times [2021-12-06 18:50:57,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:50:57,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311827771] [2021-12-06 18:50:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:50:57,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:50:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:50:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 1237 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2021-12-06 18:50:58,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:50:58,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311827771] [2021-12-06 18:50:58,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311827771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:50:58,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:50:58,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:50:58,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941054546] [2021-12-06 18:50:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:50:58,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:50:58,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:50:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:50:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:50:58,817 INFO L87 Difference]: Start difference. First operand 408018 states and 415577 transitions. Second operand has 3 states, 3 states have (on average 727.0) internal successors, (2181), 3 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:51:03,844 INFO L93 Difference]: Finished difference Result 833039 states and 848433 transitions. [2021-12-06 18:51:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:51:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 727.0) internal successors, (2181), 3 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2563 [2021-12-06 18:51:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:51:04,361 INFO L225 Difference]: With dead ends: 833039 [2021-12-06 18:51:04,361 INFO L226 Difference]: Without dead ends: 425024 [2021-12-06 18:51:04,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:51:04,503 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 1688 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 4892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:51:04,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 1326 Invalid, 4892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 4566 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 18:51:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425024 states. [2021-12-06 18:51:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425024 to 416512. [2021-12-06 18:51:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416512 states, 416511 states have (on average 1.018112366780229) internal successors, (424055), 416511 states have internal predecessors, (424055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416512 states to 416512 states and 424055 transitions. [2021-12-06 18:51:08,751 INFO L78 Accepts]: Start accepts. Automaton has 416512 states and 424055 transitions. Word has length 2563 [2021-12-06 18:51:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:51:08,751 INFO L470 AbstractCegarLoop]: Abstraction has 416512 states and 424055 transitions. [2021-12-06 18:51:08,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 727.0) internal successors, (2181), 3 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 416512 states and 424055 transitions. [2021-12-06 18:51:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2614 [2021-12-06 18:51:08,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:51:08,987 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:51:08,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 18:51:08,988 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:51:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:51:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2145146304, now seen corresponding path program 1 times [2021-12-06 18:51:08,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:51:08,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638785211] [2021-12-06 18:51:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:51:08,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:51:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:51:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-12-06 18:51:10,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:51:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638785211] [2021-12-06 18:51:10,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638785211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:51:10,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:51:10,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:51:10,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637082434] [2021-12-06 18:51:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:51:10,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:51:10,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:51:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:51:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:51:10,308 INFO L87 Difference]: Start difference. First operand 416512 states and 424055 transitions. Second operand has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:51:15,510 INFO L93 Difference]: Finished difference Result 933247 states and 950035 transitions. [2021-12-06 18:51:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:51:15,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2613 [2021-12-06 18:51:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:51:16,124 INFO L225 Difference]: With dead ends: 933247 [2021-12-06 18:51:16,124 INFO L226 Difference]: Without dead ends: 515024 [2021-12-06 18:51:16,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:51:16,260 INFO L933 BasicCegarLoop]: 2982 mSDtfsCounter, 1381 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4683 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 5255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 4683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:51:16,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 3175 Invalid, 5255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 4683 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 18:51:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515024 states. [2021-12-06 18:51:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515024 to 503093. [2021-12-06 18:51:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503093 states, 503092 states have (on average 1.0151443473559507) internal successors, (510711), 503092 states have internal predecessors, (510711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503093 states to 503093 states and 510711 transitions. [2021-12-06 18:51:21,224 INFO L78 Accepts]: Start accepts. Automaton has 503093 states and 510711 transitions. Word has length 2613 [2021-12-06 18:51:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:51:21,225 INFO L470 AbstractCegarLoop]: Abstraction has 503093 states and 510711 transitions. [2021-12-06 18:51:21,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 503093 states and 510711 transitions. [2021-12-06 18:51:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2677 [2021-12-06 18:51:21,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:51:21,555 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:51:21,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 18:51:21,555 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:51:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:51:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 829705153, now seen corresponding path program 1 times [2021-12-06 18:51:21,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:51:21,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356716830] [2021-12-06 18:51:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:51:21,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:51:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:51:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 1531 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-12-06 18:51:22,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:51:22,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356716830] [2021-12-06 18:51:22,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356716830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:51:22,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:51:22,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:51:22,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908530866] [2021-12-06 18:51:22,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:51:22,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:51:22,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:51:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:51:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:51:22,804 INFO L87 Difference]: Start difference. First operand 503093 states and 510711 transitions. Second operand has 3 states, 3 states have (on average 736.0) internal successors, (2208), 3 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:51:28,511 INFO L93 Difference]: Finished difference Result 1099631 states and 1116328 transitions. [2021-12-06 18:51:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:51:28,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 736.0) internal successors, (2208), 3 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2676 [2021-12-06 18:51:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:51:29,189 INFO L225 Difference]: With dead ends: 1099631 [2021-12-06 18:51:29,190 INFO L226 Difference]: Without dead ends: 596541 [2021-12-06 18:51:29,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:51:29,298 INFO L933 BasicCegarLoop]: 2973 mSDtfsCounter, 1675 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4769 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 4769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:51:29,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 3172 Invalid, 5360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 4769 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-06 18:51:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596541 states. [2021-12-06 18:51:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596541 to 584593. [2021-12-06 18:51:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584593 states, 584592 states have (on average 1.0135701480690806) internal successors, (592525), 584592 states have internal predecessors, (592525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584593 states to 584593 states and 592525 transitions. [2021-12-06 18:51:35,119 INFO L78 Accepts]: Start accepts. Automaton has 584593 states and 592525 transitions. Word has length 2676 [2021-12-06 18:51:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:51:35,120 INFO L470 AbstractCegarLoop]: Abstraction has 584593 states and 592525 transitions. [2021-12-06 18:51:35,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 736.0) internal successors, (2208), 3 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:51:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 584593 states and 592525 transitions. [2021-12-06 18:51:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2688 [2021-12-06 18:51:35,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:51:35,606 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:51:35,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-06 18:51:35,606 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:51:35,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:51:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash -116152385, now seen corresponding path program 1 times [2021-12-06 18:51:35,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:51:35,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150213252] [2021-12-06 18:51:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:51:35,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:51:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:51:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 1425 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-12-06 18:51:36,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:51:36,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150213252] [2021-12-06 18:51:36,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150213252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:51:36,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:51:36,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:51:36,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54871805] [2021-12-06 18:51:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:51:36,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:51:36,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:51:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:51:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:51:36,625 INFO L87 Difference]: Start difference. First operand 584593 states and 592525 transitions. Second operand has 3 states, 3 states have (on average 730.0) internal successors, (2190), 3 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)