./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/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 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:58:44,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:58:44,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:58:44,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:58:44,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:58:44,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:58:44,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:58:44,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:58:44,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:58:44,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:58:44,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:58:44,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:58:44,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:58:44,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:58:44,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:58:44,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:58:44,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:58:44,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:58:44,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:58:44,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:58:44,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:58:44,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:58:44,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:58:44,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:58:44,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:58:44,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:58:44,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:58:44,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:58:44,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:58:44,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:58:44,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:58:44,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:58:44,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:58:44,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:58:44,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:58:44,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:58:44,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:58:44,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:58:44,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:58:44,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:58:44,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:58:44,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:58:44,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:58:44,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:58:44,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:58:44,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:58:44,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:58:44,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:58:44,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:58:44,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:58:44,456 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:58:44,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:58:44,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:58:44,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:58:44,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:58:44,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:58:44,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:58:44,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:58:44,460 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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 [2021-12-07 00:58:44,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:58:44,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:58:44,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:58:44,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:58:44,661 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:58:44,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2021-12-07 00:58:44,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/data/a734036a2/9f146247b86a40f68b9dfe2e8dc2ddc9/FLAG918f3d0cb [2021-12-07 00:58:45,358 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:58:45,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2021-12-07 00:58:45,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/data/a734036a2/9f146247b86a40f68b9dfe2e8dc2ddc9/FLAG918f3d0cb [2021-12-07 00:58:45,754 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/data/a734036a2/9f146247b86a40f68b9dfe2e8dc2ddc9 [2021-12-07 00:58:45,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:58:45,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:58:45,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:58:45,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:58:45,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:58:45,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:45" (1/1) ... [2021-12-07 00:58:45,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37dc7089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:45, skipping insertion in model container [2021-12-07 00:58:45,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:45" (1/1) ... [2021-12-07 00:58:45,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:58:45,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:58:47,307 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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[375709,375722] [2021-12-07 00:58:47,339 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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[383339,383352] [2021-12-07 00:58:47,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:58:47,507 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:58:48,280 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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[375709,375722] [2021-12-07 00:58:48,288 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_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[383339,383352] [2021-12-07 00:58:48,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:58:48,345 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:58:48,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48 WrapperNode [2021-12-07 00:58:48,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:58:48,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:58:48,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:58:48,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:58:48,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:48,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:48,759 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2021-12-07 00:58:48,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:58:48,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:58:48,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:58:48,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:58:48,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:48,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:48,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:48,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:48,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:49,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:49,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:49,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:58:49,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:58:49,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:58:49,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:58:49,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (1/1) ... [2021-12-07 00:58:49,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:58:49,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:49,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:49,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:58:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:58:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-07 00:58:49,154 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-07 00:58:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-07 00:58:49,154 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-07 00:58:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-07 00:58:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-07 00:58:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-07 00:58:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-07 00:58:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-07 00:58:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-07 00:58:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-07 00:58:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-07 00:58:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:58:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:58:49,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:58:49,243 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:58:49,245 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:58:53,343 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:58:53,366 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:58:53,367 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-07 00:58:53,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:53 BoogieIcfgContainer [2021-12-07 00:58:53,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:58:53,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:58:53,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:58:53,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:58:53,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:58:45" (1/3) ... [2021-12-07 00:58:53,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4e410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:58:53, skipping insertion in model container [2021-12-07 00:58:53,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:48" (2/3) ... [2021-12-07 00:58:53,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4e410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:58:53, skipping insertion in model container [2021-12-07 00:58:53,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:53" (3/3) ... [2021-12-07 00:58:53,376 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.04.cil-1.c [2021-12-07 00:58:53,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:58:53,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 00:58:53,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:58:53,427 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 [2021-12-07 00:58:53,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 00:58:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-07 00:58:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:53,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:53,486 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] [2021-12-07 00:58:53,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:53,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-12-07 00:58:53,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:53,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037762043] [2021-12-07 00:58:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:53,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:53,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037762043] [2021-12-07 00:58:53,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037762043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:53,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:53,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:58:53,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141029401] [2021-12-07 00:58:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:53,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:58:53,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:58:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:58:53,810 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:58:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:54,453 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2021-12-07 00:58:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:58:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-07 00:58:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:54,485 INFO L225 Difference]: With dead ends: 4778 [2021-12-07 00:58:54,485 INFO L226 Difference]: Without dead ends: 2352 [2021-12-07 00:58:54,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:58:54,495 INFO L933 BasicCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16584 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:54,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 16584 Invalid, 331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:58:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-12-07 00:58:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2021-12-07 00:58:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-07 00:58:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2021-12-07 00:58:54,653 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2021-12-07 00:58:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:54,654 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2021-12-07 00:58:54,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:58:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2021-12-07 00:58:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:54,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:54,658 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] [2021-12-07 00:58:54,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:58:54,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2021-12-07 00:58:54,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:54,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376870927] [2021-12-07 00:58:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:54,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:54,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:54,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376870927] [2021-12-07 00:58:54,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376870927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:54,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:54,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:58:54,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932372281] [2021-12-07 00:58:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:54,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:58:54,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:58:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:58:54,806 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-07 00:58:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:55,624 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2021-12-07 00:58:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:58:55,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2021-12-07 00:58:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:55,639 INFO L225 Difference]: With dead ends: 2738 [2021-12-07 00:58:55,639 INFO L226 Difference]: Without dead ends: 2573 [2021-12-07 00:58:55,641 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 [2021-12-07 00:58:55,643 INFO L933 BasicCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16618 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:55,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 16618 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:58:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-12-07 00:58:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2021-12-07 00:58:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-07 00:58:55,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2021-12-07 00:58:55,716 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2021-12-07 00:58:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:55,716 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2021-12-07 00:58:55,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-07 00:58:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2021-12-07 00:58:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:55,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:55,721 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] [2021-12-07 00:58:55,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:58:55,721 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2021-12-07 00:58:55,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:55,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189194219] [2021-12-07 00:58:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:55,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:55,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189194219] [2021-12-07 00:58:55,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189194219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:55,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:55,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:58:55,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536290949] [2021-12-07 00:58:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:55,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:55,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:58:55,855 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:56,343 INFO L93 Difference]: Finished difference Result 2912 states and 5180 transitions. [2021-12-07 00:58:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:58:56,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:58:56,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:56,360 INFO L225 Difference]: With dead ends: 2912 [2021-12-07 00:58:56,360 INFO L226 Difference]: Without dead ends: 2579 [2021-12-07 00:58:56,363 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 [2021-12-07 00:58:56,364 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 4490 mSDsluCounter, 12205 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 16430 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:56,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4502 Valid, 16430 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:58:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2021-12-07 00:58:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2466. [2021-12-07 00:58:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8239669421487603) internal successors, (4414), 2423 states have internal predecessors, (4414), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-07 00:58:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4479 transitions. [2021-12-07 00:58:56,433 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4479 transitions. Word has length 90 [2021-12-07 00:58:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:56,433 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4479 transitions. [2021-12-07 00:58:56,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4479 transitions. [2021-12-07 00:58:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:56,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:56,436 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] [2021-12-07 00:58:56,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:58:56,436 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2021-12-07 00:58:56,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:56,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922886711] [2021-12-07 00:58:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:56,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:56,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:56,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922886711] [2021-12-07 00:58:56,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922886711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:56,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:56,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:58:56,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080281117] [2021-12-07 00:58:56,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:56,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:56,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:56,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:58:56,533 INFO L87 Difference]: Start difference. First operand 2466 states and 4479 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:57,333 INFO L93 Difference]: Finished difference Result 3127 states and 5499 transitions. [2021-12-07 00:58:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:58:57,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:58:57,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:57,346 INFO L225 Difference]: With dead ends: 3127 [2021-12-07 00:58:57,346 INFO L226 Difference]: Without dead ends: 2794 [2021-12-07 00:58:57,348 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 [2021-12-07 00:58:57,349 INFO L933 BasicCegarLoop]: 4289 mSDtfsCounter, 4619 mSDsluCounter, 16469 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 20758 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:57,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4630 Valid, 20758 Invalid, 1213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:58:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-12-07 00:58:57,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2623. [2021-12-07 00:58:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8064137661321862) internal successors, (4619), 2561 states have internal predecessors, (4619), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-07 00:58:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4712 transitions. [2021-12-07 00:58:57,408 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4712 transitions. Word has length 90 [2021-12-07 00:58:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:57,409 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 4712 transitions. [2021-12-07 00:58:57,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4712 transitions. [2021-12-07 00:58:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:57,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:57,410 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] [2021-12-07 00:58:57,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:58:57,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2021-12-07 00:58:57,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:57,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422159589] [2021-12-07 00:58:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:57,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:57,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:57,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422159589] [2021-12-07 00:58:57,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422159589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:57,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:57,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:58:57,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092299248] [2021-12-07 00:58:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:57,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:57,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:58:57,496 INFO L87 Difference]: Start difference. First operand 2623 states and 4712 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:58,296 INFO L93 Difference]: Finished difference Result 3702 states and 6372 transitions. [2021-12-07 00:58:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:58:58,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:58:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:58,311 INFO L225 Difference]: With dead ends: 3702 [2021-12-07 00:58:58,311 INFO L226 Difference]: Without dead ends: 3212 [2021-12-07 00:58:58,314 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 [2021-12-07 00:58:58,315 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 4584 mSDsluCounter, 16719 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 21094 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:58,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 21094 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:58:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-12-07 00:58:58,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2939. [2021-12-07 00:58:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2833 states have (on average 1.7762089657606777) internal successors, (5032), 2839 states have internal predecessors, (5032), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2021-12-07 00:58:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5185 transitions. [2021-12-07 00:58:58,387 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5185 transitions. Word has length 90 [2021-12-07 00:58:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:58,387 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 5185 transitions. [2021-12-07 00:58:58,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5185 transitions. [2021-12-07 00:58:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:58,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:58,389 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] [2021-12-07 00:58:58,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:58:58,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2021-12-07 00:58:58,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:58,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211047082] [2021-12-07 00:58:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:58,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:58,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211047082] [2021-12-07 00:58:58,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211047082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:58,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:58,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:58:58,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896184468] [2021-12-07 00:58:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:58,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:58,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:58:58,464 INFO L87 Difference]: Start difference. First operand 2939 states and 5185 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:59,449 INFO L93 Difference]: Finished difference Result 5072 states and 8441 transitions. [2021-12-07 00:58:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:58:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:58:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:59,474 INFO L225 Difference]: With dead ends: 5072 [2021-12-07 00:58:59,474 INFO L226 Difference]: Without dead ends: 4266 [2021-12-07 00:58:59,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:58:59,480 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 4748 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4764 SdHoareTripleChecker+Valid, 21074 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:59,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4764 Valid, 21074 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:58:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-12-07 00:58:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3566. [2021-12-07 00:58:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3384 states have (on average 1.7322695035460993) internal successors, (5862), 3394 states have internal predecessors, (5862), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2021-12-07 00:58:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 6133 transitions. [2021-12-07 00:58:59,613 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 6133 transitions. Word has length 90 [2021-12-07 00:58:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:59,614 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 6133 transitions. [2021-12-07 00:58:59,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:58:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 6133 transitions. [2021-12-07 00:58:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:58:59,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:59,616 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] [2021-12-07 00:58:59,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:58:59,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:59,617 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2021-12-07 00:58:59,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:59,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632624795] [2021-12-07 00:58:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:59,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:58:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:58:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:58:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:58:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:59,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:58:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:59,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:59,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632624795] [2021-12-07 00:58:59,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632624795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:59,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:59,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:58:59,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043261191] [2021-12-07 00:58:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:59,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:59,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:58:59,695 INFO L87 Difference]: Start difference. First operand 3566 states and 6133 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:00,752 INFO L93 Difference]: Finished difference Result 7431 states and 12027 transitions. [2021-12-07 00:59:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:59:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:59:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:00,777 INFO L225 Difference]: With dead ends: 7431 [2021-12-07 00:59:00,777 INFO L226 Difference]: Without dead ends: 5998 [2021-12-07 00:59:00,782 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 [2021-12-07 00:59:00,782 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 4605 mSDsluCounter, 16708 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 21125 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:00,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4615 Valid, 21125 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:59:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5998 states. [2021-12-07 00:59:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5998 to 4773. [2021-12-07 00:59:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4443 states have (on average 1.6781453972541076) internal successors, (7456), 4461 states have internal predecessors, (7456), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2021-12-07 00:59:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7973 transitions. [2021-12-07 00:59:00,925 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7973 transitions. Word has length 90 [2021-12-07 00:59:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:00,925 INFO L470 AbstractCegarLoop]: Abstraction has 4773 states and 7973 transitions. [2021-12-07 00:59:00,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7973 transitions. [2021-12-07 00:59:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:59:00,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:00,928 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] [2021-12-07 00:59:00,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:59:00,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2021-12-07 00:59:00,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171362953] [2021-12-07 00:59:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:00,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:00,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:59:01,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:01,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171362953] [2021-12-07 00:59:01,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171362953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:01,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:59:01,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:59:01,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589596061] [2021-12-07 00:59:01,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:01,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:59:01,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:59:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:59:01,002 INFO L87 Difference]: Start difference. First operand 4773 states and 7973 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:02,104 INFO L93 Difference]: Finished difference Result 11880 states and 18833 transitions. [2021-12-07 00:59:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:59:02,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:59:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:02,130 INFO L225 Difference]: With dead ends: 11880 [2021-12-07 00:59:02,130 INFO L226 Difference]: Without dead ends: 9240 [2021-12-07 00:59:02,137 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 [2021-12-07 00:59:02,137 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 4668 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:02,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4684 Valid, 21064 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:59:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2021-12-07 00:59:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 7218. [2021-12-07 00:59:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7218 states, 6600 states have (on average 1.6233333333333333) internal successors, (10714), 6634 states have internal predecessors, (10714), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2021-12-07 00:59:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 11761 transitions. [2021-12-07 00:59:02,375 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 11761 transitions. Word has length 90 [2021-12-07 00:59:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:02,375 INFO L470 AbstractCegarLoop]: Abstraction has 7218 states and 11761 transitions. [2021-12-07 00:59:02,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 11761 transitions. [2021-12-07 00:59:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:59:02,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:02,379 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] [2021-12-07 00:59:02,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:59:02,379 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2021-12-07 00:59:02,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:02,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467081247] [2021-12-07 00:59:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:02,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:59:02,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:02,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467081247] [2021-12-07 00:59:02,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467081247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:02,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:59:02,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:59:02,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318459442] [2021-12-07 00:59:02,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:02,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:59:02,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:02,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:59:02,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:59:02,450 INFO L87 Difference]: Start difference. First operand 7218 states and 11761 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:03,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:03,681 INFO L93 Difference]: Finished difference Result 20587 states and 32367 transitions. [2021-12-07 00:59:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:59:03,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:59:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:03,715 INFO L225 Difference]: With dead ends: 20587 [2021-12-07 00:59:03,716 INFO L226 Difference]: Without dead ends: 15502 [2021-12-07 00:59:03,729 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 [2021-12-07 00:59:03,729 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4628 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 21059 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:03,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4644 Valid, 21059 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:59:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15502 states. [2021-12-07 00:59:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15502 to 12091. [2021-12-07 00:59:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12091 states, 10913 states have (on average 1.5801337853935673) internal successors, (17244), 10979 states have internal predecessors, (17244), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2021-12-07 00:59:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12091 states to 12091 states and 19481 transitions. [2021-12-07 00:59:04,149 INFO L78 Accepts]: Start accepts. Automaton has 12091 states and 19481 transitions. Word has length 90 [2021-12-07 00:59:04,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:04,149 INFO L470 AbstractCegarLoop]: Abstraction has 12091 states and 19481 transitions. [2021-12-07 00:59:04,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 12091 states and 19481 transitions. [2021-12-07 00:59:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:59:04,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:04,192 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] [2021-12-07 00:59:04,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:59:04,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2021-12-07 00:59:04,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:04,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774978927] [2021-12-07 00:59:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:04,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:59:04,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:04,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774978927] [2021-12-07 00:59:04,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774978927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:04,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:59:04,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:59:04,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332654869] [2021-12-07 00:59:04,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:04,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:59:04,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:59:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:59:04,266 INFO L87 Difference]: Start difference. First operand 12091 states and 19481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:06,064 INFO L93 Difference]: Finished difference Result 37374 states and 59105 transitions. [2021-12-07 00:59:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:59:06,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-07 00:59:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:06,127 INFO L225 Difference]: With dead ends: 37374 [2021-12-07 00:59:06,127 INFO L226 Difference]: Without dead ends: 27416 [2021-12-07 00:59:06,153 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 [2021-12-07 00:59:06,154 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 4573 mSDsluCounter, 16696 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 21045 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:06,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 21045 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:59:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27416 states. [2021-12-07 00:59:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27416 to 21792. [2021-12-07 00:59:06,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21792 states, 19534 states have (on average 1.5526773830244702) internal successors, (30330), 19664 states have internal predecessors, (30330), 1358 states have call successors, (1358), 770 states have call predecessors, (1358), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2021-12-07 00:59:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21792 states to 21792 states and 35361 transitions. [2021-12-07 00:59:07,040 INFO L78 Accepts]: Start accepts. Automaton has 21792 states and 35361 transitions. Word has length 90 [2021-12-07 00:59:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:07,040 INFO L470 AbstractCegarLoop]: Abstraction has 21792 states and 35361 transitions. [2021-12-07 00:59:07,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-07 00:59:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 21792 states and 35361 transitions. [2021-12-07 00:59:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-07 00:59:07,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:07,054 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] [2021-12-07 00:59:07,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:59:07,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2021-12-07 00:59:07,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:07,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867459515] [2021-12-07 00:59:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:07,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:59:07,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:07,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867459515] [2021-12-07 00:59:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867459515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:07,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:59:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:59:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217411826] [2021-12-07 00:59:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:07,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:59:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:59:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:59:07,114 INFO L87 Difference]: Start difference. First operand 21792 states and 35361 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-07 00:59:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:09,172 INFO L93 Difference]: Finished difference Result 58143 states and 92498 transitions. [2021-12-07 00:59:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:59:09,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2021-12-07 00:59:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:09,258 INFO L225 Difference]: With dead ends: 58143 [2021-12-07 00:59:09,259 INFO L226 Difference]: Without dead ends: 38485 [2021-12-07 00:59:09,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:59:09,298 INFO L933 BasicCegarLoop]: 4469 mSDtfsCounter, 4774 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16900 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:09,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 16900 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:59:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38485 states. [2021-12-07 00:59:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38485 to 31574. [2021-12-07 00:59:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31574 states, 28144 states have (on average 1.530130756111427) internal successors, (43064), 28403 states have internal predecessors, (43064), 2076 states have call successors, (2076), 1160 states have call predecessors, (2076), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2021-12-07 00:59:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31574 states to 31574 states and 50261 transitions. [2021-12-07 00:59:10,608 INFO L78 Accepts]: Start accepts. Automaton has 31574 states and 50261 transitions. Word has length 90 [2021-12-07 00:59:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:10,609 INFO L470 AbstractCegarLoop]: Abstraction has 31574 states and 50261 transitions. [2021-12-07 00:59:10,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-07 00:59:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 31574 states and 50261 transitions. [2021-12-07 00:59:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-07 00:59:10,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:10,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:59:10,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:59:10,672 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2021-12-07 00:59:10,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:10,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990569847] [2021-12-07 00:59:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:10,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:59:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:59:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:59:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:59:10,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990569847] [2021-12-07 00:59:10,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990569847] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:59:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005894615] [2021-12-07 00:59:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:10,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:59:10,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:59:10,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:59:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:10,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:59:10,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:59:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:59:10,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:59:10,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005894615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:10,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:59:10,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:59:10,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270987656] [2021-12-07 00:59:10,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:10,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:59:10,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:59:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:59:10,997 INFO L87 Difference]: Start difference. First operand 31574 states and 50261 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2021-12-07 00:59:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:12,901 INFO L93 Difference]: Finished difference Result 89759 states and 142519 transitions. [2021-12-07 00:59:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:59:12,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 146 [2021-12-07 00:59:12,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:13,074 INFO L225 Difference]: With dead ends: 89759 [2021-12-07 00:59:13,075 INFO L226 Difference]: Without dead ends: 60319 [2021-12-07 00:59:13,151 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 [2021-12-07 00:59:13,151 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4172 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 4468 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 [2021-12-07 00:59:13,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:59:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60319 states. [2021-12-07 00:59:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60319 to 59929. [2021-12-07 00:59:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59929 states, 53181 states have (on average 1.515522461029315) internal successors, (80597), 53697 states have internal predecessors, (80597), 4046 states have call successors, (4046), 2316 states have call predecessors, (4046), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2021-12-07 00:59:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59929 states to 59929 states and 94652 transitions. [2021-12-07 00:59:15,655 INFO L78 Accepts]: Start accepts. Automaton has 59929 states and 94652 transitions. Word has length 146 [2021-12-07 00:59:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:15,655 INFO L470 AbstractCegarLoop]: Abstraction has 59929 states and 94652 transitions. [2021-12-07 00:59:15,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2021-12-07 00:59:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 59929 states and 94652 transitions. [2021-12-07 00:59:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-07 00:59:15,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:15,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:59:15,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:59:15,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:15,931 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2021-12-07 00:59:15,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:15,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242815821] [2021-12-07 00:59:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:15,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:59:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:59:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:59:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:59:16,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:16,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242815821] [2021-12-07 00:59:16,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242815821] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:59:16,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921286253] [2021-12-07 00:59:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:16,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:59:16,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:59:16,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:59:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:16,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:59:16,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:59:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:59:16,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:59:16,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921286253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:16,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:59:16,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:59:16,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206469840] [2021-12-07 00:59:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:59:16,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:59:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:59:16,242 INFO L87 Difference]: Start difference. First operand 59929 states and 94652 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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) [2021-12-07 00:59:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:20,075 INFO L93 Difference]: Finished difference Result 174118 states and 275394 transitions. [2021-12-07 00:59:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:59:20,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 146 [2021-12-07 00:59:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:20,440 INFO L225 Difference]: With dead ends: 174118 [2021-12-07 00:59:20,440 INFO L226 Difference]: Without dead ends: 116323 [2021-12-07 00:59:20,554 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 [2021-12-07 00:59:20,554 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4166 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4166 SdHoareTripleChecker+Valid, 4468 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 [2021-12-07 00:59:20,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4166 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:59:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116323 states. [2021-12-07 00:59:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116323 to 115545. [2021-12-07 00:59:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115545 states, 102275 states have (on average 1.5067318504033245) internal successors, (154101), 103305 states have internal predecessors, (154101), 7880 states have call successors, (7880), 4620 states have call predecessors, (7880), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2021-12-07 00:59:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115545 states to 115545 states and 181660 transitions. [2021-12-07 00:59:25,436 INFO L78 Accepts]: Start accepts. Automaton has 115545 states and 181660 transitions. Word has length 146 [2021-12-07 00:59:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:25,436 INFO L470 AbstractCegarLoop]: Abstraction has 115545 states and 181660 transitions. [2021-12-07 00:59:25,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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) [2021-12-07 00:59:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 115545 states and 181660 transitions. [2021-12-07 00:59:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-07 00:59:25,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:25,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:59:25,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:59:25,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 00:59:25,755 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash -948680166, now seen corresponding path program 1 times [2021-12-07 00:59:25,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:25,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102240520] [2021-12-07 00:59:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:25,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:59:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:59:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:59:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:59:25,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:25,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102240520] [2021-12-07 00:59:25,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102240520] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:59:25,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511690555] [2021-12-07 00:59:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:25,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:25,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:59:25,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:59:25,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:59:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:25,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:59:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:59:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-07 00:59:26,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:59:26,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511690555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:26,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:59:26,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 00:59:26,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225349470] [2021-12-07 00:59:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:26,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:59:26,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:59:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:59:26,042 INFO L87 Difference]: Start difference. First operand 115545 states and 181660 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2021-12-07 00:59:34,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:34,265 INFO L93 Difference]: Finished difference Result 338259 states and 535935 transitions. [2021-12-07 00:59:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:59:34,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 146 [2021-12-07 00:59:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:35,030 INFO L225 Difference]: With dead ends: 338259 [2021-12-07 00:59:35,030 INFO L226 Difference]: Without dead ends: 224849 [2021-12-07 00:59:35,232 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 [2021-12-07 00:59:35,232 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 232 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 8679 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 [2021-12-07 00:59:35,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 8679 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:59:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224849 states. [2021-12-07 00:59:44,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224849 to 224849. [2021-12-07 00:59:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224849 states, 198976 states have (on average 1.4973715422965583) internal successors, (297941), 200775 states have internal predecessors, (297941), 15167 states have call successors, (15167), 9168 states have call predecessors, (15167), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) [2021-12-07 00:59:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224849 states to 224849 states and 354502 transitions. [2021-12-07 00:59:45,304 INFO L78 Accepts]: Start accepts. Automaton has 224849 states and 354502 transitions. Word has length 146 [2021-12-07 00:59:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:45,304 INFO L470 AbstractCegarLoop]: Abstraction has 224849 states and 354502 transitions. [2021-12-07 00:59:45,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2021-12-07 00:59:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 224849 states and 354502 transitions. [2021-12-07 00:59:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-07 00:59:46,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:46,053 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, 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] [2021-12-07 00:59:46,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:59:46,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 00:59:46,254 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 682317025, now seen corresponding path program 1 times [2021-12-07 00:59:46,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:46,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645045718] [2021-12-07 00:59:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:46,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:59:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:59:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:59:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:59:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:59:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:59:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:59:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-07 00:59:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:59:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-07 00:59:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-07 00:59:46,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645045718] [2021-12-07 00:59:46,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645045718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:59:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998490490] [2021-12-07 00:59:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:46,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:46,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:59:46,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:59:46,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:59:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:46,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:59:46,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:59:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-07 00:59:46,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:59:46,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998490490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:59:46,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:59:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:59:46,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798758806] [2021-12-07 00:59:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:59:46,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:59:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:59:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:59:46,951 INFO L87 Difference]: Start difference. First operand 224849 states and 354502 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2021-12-07 01:00:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:03,786 INFO L93 Difference]: Finished difference Result 664375 states and 1053593 transitions. [2021-12-07 01:00:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:03,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 190 [2021-12-07 01:00:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:05,476 INFO L225 Difference]: With dead ends: 664375 [2021-12-07 01:00:05,476 INFO L226 Difference]: Without dead ends: 441667 [2021-12-07 01:00:05,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:00:05,929 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4111 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4111 SdHoareTripleChecker+Valid, 4468 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 [2021-12-07 01:00:05,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4111 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:00:06,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441667 states. [2021-12-07 01:00:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441667 to 438561. [2021-12-07 01:00:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438561 states, 387896 states have (on average 1.4935059912966362) internal successors, (579325), 391491 states have internal predecessors, (579325), 29399 states have call successors, (29399), 18192 states have call predecessors, (29399), 21264 states have return successors, (81098), 29133 states have call predecessors, (81098), 29399 states have call successors, (81098) [2021-12-07 01:00:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438561 states to 438561 states and 689822 transitions. [2021-12-07 01:00:26,920 INFO L78 Accepts]: Start accepts. Automaton has 438561 states and 689822 transitions. Word has length 190 [2021-12-07 01:00:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:26,921 INFO L470 AbstractCegarLoop]: Abstraction has 438561 states and 689822 transitions. [2021-12-07 01:00:26,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2021-12-07 01:00:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 438561 states and 689822 transitions. [2021-12-07 01:00:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-07 01:00:28,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:28,230 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, 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] [2021-12-07 01:00:28,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:00:28,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 01:00:28,432 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1529313715, now seen corresponding path program 1 times [2021-12-07 01:00:28,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:28,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290357240] [2021-12-07 01:00:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:28,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:00:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:00:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:00:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:00:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:00:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 01:00:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:00:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 01:00:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:00:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-07 01:00:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-07 01:00:28,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290357240] [2021-12-07 01:00:28,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290357240] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:00:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303779650] [2021-12-07 01:00:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:28,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:00:28,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:00:28,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:00:28,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:00:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:00:28,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:00:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-07 01:00:28,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:00:28,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303779650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:28,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:00:28,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 01:00:28,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791359784] [2021-12-07 01:00:28,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:28,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:28,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:28,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:00:28,831 INFO L87 Difference]: Start difference. First operand 438561 states and 689822 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2021-12-07 01:01:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:01,899 INFO L93 Difference]: Finished difference Result 1299185 states and 2055645 transitions. [2021-12-07 01:01:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:01,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 190 [2021-12-07 01:01:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:05,327 INFO L225 Difference]: With dead ends: 1299185 [2021-12-07 01:01:05,327 INFO L226 Difference]: Without dead ends: 862765 [2021-12-07 01:01:06,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:01:06,539 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 4114 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4114 SdHoareTripleChecker+Valid, 4471 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 [2021-12-07 01:01:06,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4114 Valid, 4471 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:01:07,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862765 states. [2021-12-07 01:01:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862765 to 856555. [2021-12-07 01:01:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856555 states, 757670 states have (on average 1.4905842913141605) internal successors, (1129371), 764857 states have internal predecessors, (1129371), 56789 states have call successors, (56789), 35950 states have call predecessors, (56789), 42094 states have return successors, (158822), 56003 states have call predecessors, (158822), 56789 states have call successors, (158822) [2021-12-07 01:01:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856555 states to 856555 states and 1344982 transitions. [2021-12-07 01:01:50,474 INFO L78 Accepts]: Start accepts. Automaton has 856555 states and 1344982 transitions. Word has length 190 [2021-12-07 01:01:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:50,474 INFO L470 AbstractCegarLoop]: Abstraction has 856555 states and 1344982 transitions. [2021-12-07 01:01:50,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2021-12-07 01:01:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 856555 states and 1344982 transitions. [2021-12-07 01:01:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-07 01:01:53,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:53,183 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, 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] [2021-12-07 01:01:53,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:01:53,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 01:01:53,385 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash -557107795, now seen corresponding path program 1 times [2021-12-07 01:01:53,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:53,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696128709] [2021-12-07 01:01:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:53,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:01:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:01:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:01:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:01:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 01:01:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 01:01:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:01:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 01:01:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:01:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 01:01:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-07 01:01:53,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:53,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696128709] [2021-12-07 01:01:53,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696128709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:01:53,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055310449] [2021-12-07 01:01:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:53,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:53,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:53,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:01:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:01:53,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-07 01:01:53,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055310449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:53,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:01:53,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:01:53,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630230581] [2021-12-07 01:01:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:01:53,753 INFO L87 Difference]: Start difference. First operand 856555 states and 1344982 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-12-07 01:02:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:26,202 INFO L93 Difference]: Finished difference Result 1290227 states and 2025097 transitions. [2021-12-07 01:02:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:26,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 209 [2021-12-07 01:02:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:28,975 INFO L225 Difference]: With dead ends: 1290227 [2021-12-07 01:02:28,975 INFO L226 Difference]: Without dead ends: 712207 [2021-12-07 01:02:30,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:02:30,235 INFO L933 BasicCegarLoop]: 4217 mSDtfsCounter, 4139 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4271 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 [2021-12-07 01:02:30,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4139 Valid, 4271 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:02:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712207 states. [2021-12-07 01:02:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712207 to 498591. [2021-12-07 01:02:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498591 states, 443042 states have (on average 1.4400598588847107) internal successors, (638007), 446653 states have internal predecessors, (638007), 31201 states have call successors, (31201), 21274 states have call predecessors, (31201), 24346 states have return successors, (67770), 30791 states have call predecessors, (67770), 31201 states have call successors, (67770) [2021-12-07 01:03:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498591 states to 498591 states and 736978 transitions. [2021-12-07 01:03:00,489 INFO L78 Accepts]: Start accepts. Automaton has 498591 states and 736978 transitions. Word has length 209 [2021-12-07 01:03:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:00,490 INFO L470 AbstractCegarLoop]: Abstraction has 498591 states and 736978 transitions. [2021-12-07 01:03:00,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-12-07 01:03:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 498591 states and 736978 transitions. [2021-12-07 01:03:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-07 01:03:01,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:01,768 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, 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] [2021-12-07 01:03:01,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:03:01,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 01:03:01,970 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash -27752050, now seen corresponding path program 1 times [2021-12-07 01:03:01,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:01,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69918872] [2021-12-07 01:03:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:01,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:03:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:03:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:03:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:03:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:03:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 01:03:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 01:03:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:03:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 01:03:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:03:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 01:03:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-07 01:03:02,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69918872] [2021-12-07 01:03:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69918872] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:03:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376811533] [2021-12-07 01:03:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:02,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:02,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:03:02,097 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:03:02,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:03:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:02,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:03:02,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:03:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-07 01:03:02,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:03:02,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376811533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:02,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:03:02,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:03:02,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968003896] [2021-12-07 01:03:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:02,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:02,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:02,313 INFO L87 Difference]: Start difference. First operand 498591 states and 736978 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-12-07 01:03:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:26,022 INFO L93 Difference]: Finished difference Result 793255 states and 1179557 transitions. [2021-12-07 01:03:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 209 [2021-12-07 01:03:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:27,422 INFO L225 Difference]: With dead ends: 793255 [2021-12-07 01:03:27,423 INFO L226 Difference]: Without dead ends: 413799 [2021-12-07 01:03:28,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:28,384 INFO L933 BasicCegarLoop]: 4216 mSDtfsCounter, 4165 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4165 SdHoareTripleChecker+Valid, 4269 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 [2021-12-07 01:03:28,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4165 Valid, 4269 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:03:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413799 states. [2021-12-07 01:03:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413799 to 291399. [2021-12-07 01:03:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291399 states, 259922 states have (on average 1.3992774755503574) internal successors, (363703), 261745 states have internal predecessors, (363703), 17377 states have call successors, (17377), 12562 states have call predecessors, (17377), 14098 states have return successors, (31114), 17155 states have call predecessors, (31114), 17377 states have call successors, (31114) [2021-12-07 01:03:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291399 states to 291399 states and 412194 transitions. [2021-12-07 01:03:48,712 INFO L78 Accepts]: Start accepts. Automaton has 291399 states and 412194 transitions. Word has length 209 [2021-12-07 01:03:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:48,712 INFO L470 AbstractCegarLoop]: Abstraction has 291399 states and 412194 transitions. [2021-12-07 01:03:48,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-12-07 01:03:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 291399 states and 412194 transitions. [2021-12-07 01:03:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-07 01:03:49,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:49,457 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, 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] [2021-12-07 01:03:49,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:03:49,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 01:03:49,659 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1417326642, now seen corresponding path program 1 times [2021-12-07 01:03:49,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:49,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126916298] [2021-12-07 01:03:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:49,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:03:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:03:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:03:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:03:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:03:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 01:03:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 01:03:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:03:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 01:03:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:03:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 01:03:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-07 01:03:49,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:49,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126916298] [2021-12-07 01:03:49,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126916298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:03:49,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688891017] [2021-12-07 01:03:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:49,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:03:49,782 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:03:49,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:03:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:49,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:03:49,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:03:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-07 01:03:50,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:03:50,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688891017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:50,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:03:50,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:03:50,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444245140] [2021-12-07 01:03:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:50,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:50,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:50,008 INFO L87 Difference]: Start difference. First operand 291399 states and 412194 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-12-07 01:04:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:09,233 INFO L93 Difference]: Finished difference Result 505798 states and 711207 transitions. [2021-12-07 01:04:09,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 209 [2021-12-07 01:04:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:10,117 INFO L225 Difference]: With dead ends: 505798 [2021-12-07 01:04:10,117 INFO L226 Difference]: Without dead ends: 309377 [2021-12-07 01:04:10,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:04:10,443 INFO L933 BasicCegarLoop]: 4238 mSDtfsCounter, 4147 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 4481 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 [2021-12-07 01:04:10,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 4481 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309377 states. [2021-12-07 01:04:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309377 to 308489. [2021-12-07 01:04:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308489 states, 275912 states have (on average 1.3766889443010815) internal successors, (379845), 277735 states have internal predecessors, (379845), 17643 states have call successors, (17643), 13396 states have call predecessors, (17643), 14932 states have return successors, (32214), 17421 states have call predecessors, (32214), 17643 states have call successors, (32214) [2021-12-07 01:04:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308489 states to 308489 states and 429702 transitions. [2021-12-07 01:04:31,805 INFO L78 Accepts]: Start accepts. Automaton has 308489 states and 429702 transitions. Word has length 209 [2021-12-07 01:04:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:31,806 INFO L470 AbstractCegarLoop]: Abstraction has 308489 states and 429702 transitions. [2021-12-07 01:04:31,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-12-07 01:04:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 308489 states and 429702 transitions. [2021-12-07 01:04:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-07 01:04:32,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:32,381 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, 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] [2021-12-07 01:04:32,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:04:32,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:32,583 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -807200227, now seen corresponding path program 1 times [2021-12-07 01:04:32,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:32,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137780090] [2021-12-07 01:04:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:32,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:04:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:04:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:04:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:04:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:04:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 01:04:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:04:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:04:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 01:04:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:04:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 01:04:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-07 01:04:32,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:32,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137780090] [2021-12-07 01:04:32,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137780090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:04:32,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042046498] [2021-12-07 01:04:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:32,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:32,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:32,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:32,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:04:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:04:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-07 01:04:32,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:04:32,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042046498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:32,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:04:32,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:04:32,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348428967] [2021-12-07 01:04:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:32,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:32,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:04:32,895 INFO L87 Difference]: Start difference. First operand 308489 states and 429702 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-12-07 01:05:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:03,683 INFO L93 Difference]: Finished difference Result 766125 states and 1072192 transitions. [2021-12-07 01:05:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:05:03,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 210 [2021-12-07 01:05:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:05,330 INFO L225 Difference]: With dead ends: 766125 [2021-12-07 01:05:05,330 INFO L226 Difference]: Without dead ends: 459779 [2021-12-07 01:05:05,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:05,967 INFO L933 BasicCegarLoop]: 4245 mSDtfsCounter, 4161 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 4474 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 [2021-12-07 01:05:05,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 4474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459779 states. [2021-12-07 01:05:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459779 to 438161. [2021-12-07 01:05:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438161 states, 391096 states have (on average 1.370315728107677) internal successors, (535925), 393827 states have internal predecessors, (535925), 25551 states have call successors, (25551), 19208 states have call predecessors, (25551), 21512 states have return successors, (52814), 25189 states have call predecessors, (52814), 25551 states have call successors, (52814) [2021-12-07 01:05:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438161 states to 438161 states and 614290 transitions. [2021-12-07 01:05:37,950 INFO L78 Accepts]: Start accepts. Automaton has 438161 states and 614290 transitions. Word has length 210 [2021-12-07 01:05:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:37,950 INFO L470 AbstractCegarLoop]: Abstraction has 438161 states and 614290 transitions. [2021-12-07 01:05:37,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-12-07 01:05:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 438161 states and 614290 transitions. [2021-12-07 01:05:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-07 01:05:38,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:38,974 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, 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] [2021-12-07 01:05:38,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:05:39,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:39,175 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash 474514655, now seen corresponding path program 1 times [2021-12-07 01:05:39,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:39,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794659024] [2021-12-07 01:05:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:39,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:05:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:05:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:05:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:05:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:05:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 01:05:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:05:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:05:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 01:05:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:05:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 01:05:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-07 01:05:39,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:39,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794659024] [2021-12-07 01:05:39,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794659024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:39,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289606787] [2021-12-07 01:05:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:39,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:39,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:39,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:05:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:05:39,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-07 01:05:39,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:39,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289606787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:39,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:39,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:05:39,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921752381] [2021-12-07 01:05:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:39,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:05:39,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:05:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:39,505 INFO L87 Difference]: Start difference. First operand 438161 states and 614290 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-12-07 01:06:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:06:36,660 INFO L93 Difference]: Finished difference Result 1297833 states and 1836874 transitions. [2021-12-07 01:06:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:06:36,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 210 [2021-12-07 01:06:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:06:39,735 INFO L225 Difference]: With dead ends: 1297833 [2021-12-07 01:06:39,736 INFO L226 Difference]: Without dead ends: 861815 [2021-12-07 01:06:40,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:06:40,756 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 4161 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 4521 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 [2021-12-07 01:06:40,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 4521 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:06:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861815 states. [2021-12-07 01:07:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861815 to 859229. [2021-12-07 01:07:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859229 states, 766538 states have (on average 1.3626291194957068) internal successors, (1044507), 771999 states have internal predecessors, (1044507), 49973 states have call successors, (49973), 37944 states have call predecessors, (49973), 42716 states have return successors, (125282), 49413 states have call predecessors, (125282), 49973 states have call successors, (125282) [2021-12-07 01:07:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859229 states to 859229 states and 1219762 transitions. [2021-12-07 01:07:48,052 INFO L78 Accepts]: Start accepts. Automaton has 859229 states and 1219762 transitions. Word has length 210 [2021-12-07 01:07:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:48,053 INFO L470 AbstractCegarLoop]: Abstraction has 859229 states and 1219762 transitions. [2021-12-07 01:07:48,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-12-07 01:07:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 859229 states and 1219762 transitions. [2021-12-07 01:07:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-07 01:07:50,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:50,292 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, 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] [2021-12-07 01:07:50,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 01:07:50,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f10b766f-a71a-4ea8-9aa7-ea6380766ca0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:50,493 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1513727905, now seen corresponding path program 1 times [2021-12-07 01:07:50,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:50,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098220795] [2021-12-07 01:07:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:50,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:07:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:07:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 01:07:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:07:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:07:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 01:07:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:07:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:07:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 01:07:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:07:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 01:07:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-07 01:07:50,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098220795] [2021-12-07 01:07:50,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098220795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:50,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:50,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:07:50,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908852198] [2021-12-07 01:07:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:50,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:07:50,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:07:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:07:50,573 INFO L87 Difference]: Start difference. First operand 859229 states and 1219762 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 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)