./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y --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 c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:33:16,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:33:16,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:33:16,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:33:16,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:33:16,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:33:16,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:33:16,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:33:16,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:33:16,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:33:16,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:33:16,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:33:16,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:33:16,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:33:16,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:33:16,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:33:16,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:33:16,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:33:16,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:33:16,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:33:16,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:33:16,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:33:16,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:33:16,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:33:16,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:33:16,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:33:16,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:33:16,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:33:16,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:33:16,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:33:16,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:33:16,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:33:16,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:33:16,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:33:16,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:33:16,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:33:16,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:33:16,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:33:16,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:33:16,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:33:16,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:33:16,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:33:16,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:33:16,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:33:16,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:33:16,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:33:16,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:33:16,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:33:16,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:33:16,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:33:16,590 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:33:16,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:33:16,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:33:16,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:33:16,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:33:16,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:33:16,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:33:16,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:33:16,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:33:16,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:33:16,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:33:16,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:33:16,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:33:16,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:33:16,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:33:16,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:33:16,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:33:16,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:33:16,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:33:16,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:33:16,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:33:16,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:33:16,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:33:16,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:33:16,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:33:16,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:33:16,597 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_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 [2021-11-13 18:33:16,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:33:16,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:33:16,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:33:16,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:33:16,892 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:33:16,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2021-11-13 18:33:16,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/data/9391b1705/8de9b8cdfd0e4324a2f606e457c9bedd/FLAG7ba1661b0 [2021-11-13 18:33:18,052 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:33:18,053 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2021-11-13 18:33:18,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/data/9391b1705/8de9b8cdfd0e4324a2f606e457c9bedd/FLAG7ba1661b0 [2021-11-13 18:33:18,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/data/9391b1705/8de9b8cdfd0e4324a2f606e457c9bedd [2021-11-13 18:33:18,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:33:18,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:33:18,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:33:18,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:33:18,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:33:18,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:33:18" (1/1) ... [2021-11-13 18:33:18,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c949487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:18, skipping insertion in model container [2021-11-13 18:33:18,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:33:18" (1/1) ... [2021-11-13 18:33:18,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:33:18,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:33:21,136 WARN L228 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_01f52175-bd60-415a-8736-25bd850324d3/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2021-11-13 18:33:21,170 WARN L228 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_01f52175-bd60-415a-8736-25bd850324d3/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2021-11-13 18:33:21,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:33:21,460 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:33:22,767 WARN L228 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_01f52175-bd60-415a-8736-25bd850324d3/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2021-11-13 18:33:22,773 WARN L228 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_01f52175-bd60-415a-8736-25bd850324d3/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2021-11-13 18:33:22,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:33:22,882 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:33:22,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22 WrapperNode [2021-11-13 18:33:22,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:33:22,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:33:22,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:33:22,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:33:22,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:23,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:23,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:33:23,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:33:23,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:33:23,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:33:23,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:23,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:23,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:23,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:24,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:24,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:24,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:24,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:33:24,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:33:24,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:33:24,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:33:24,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (1/1) ... [2021-11-13 18:33:24,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:33:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:24,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:33:24,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:33:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:33:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-13 18:33:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-13 18:33:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 18:33:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 18:33:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-13 18:33:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-13 18:33:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-13 18:33:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-13 18:33:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-13 18:33:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-13 18:33:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-13 18:33:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-13 18:33:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:33:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:33:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:33:32,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:33:32,841 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-13 18:33:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:33:32 BoogieIcfgContainer [2021-11-13 18:33:32,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:33:32,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:33:32,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:33:32,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:33:32,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:33:18" (1/3) ... [2021-11-13 18:33:32,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e07c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:33:32, skipping insertion in model container [2021-11-13 18:33:32,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:33:22" (2/3) ... [2021-11-13 18:33:32,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e07c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:33:32, skipping insertion in model container [2021-11-13 18:33:32,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:33:32" (3/3) ... [2021-11-13 18:33:32,863 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-1.c [2021-11-13 18:33:32,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:33:32,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 18:33:32,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:33:32,965 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:33:32,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 18:33:33,049 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) [2021-11-13 18:33:33,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:33,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:33,064 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] [2021-11-13 18:33:33,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-11-13 18:33:33,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:33,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028609188] [2021-11-13 18:33:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:33,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:33,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:33,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028609188] [2021-11-13 18:33:33,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028609188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:33,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:33,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:33:33,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019498122] [2021-11-13 18:33:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:33,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:33:33,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:33:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:33:33,538 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) [2021-11-13 18:33:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:34,555 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2021-11-13 18:33:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:33:34,558 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 [2021-11-13 18:33:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:34,599 INFO L225 Difference]: With dead ends: 4778 [2021-11-13 18:33:34,600 INFO L226 Difference]: Without dead ends: 2352 [2021-11-13 18:33:34,615 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 [2021-11-13 18:33:34,624 INFO L933 BasicCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16584 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.42ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 583.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:34,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 16584 Invalid, 331 Unknown, 0 Unchecked, 95.42ms Time], IncrementalHoareTripleChecker [44 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 583.64ms Time] [2021-11-13 18:33:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-11-13 18:33:34,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2021-11-13 18:33:34,808 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) [2021-11-13 18:33:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2021-11-13 18:33:34,830 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2021-11-13 18:33:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:34,831 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2021-11-13 18:33:34,832 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) [2021-11-13 18:33:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2021-11-13 18:33:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:34,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:34,850 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] [2021-11-13 18:33:34,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:33:34,852 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2021-11-13 18:33:34,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:34,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308948001] [2021-11-13 18:33:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:34,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:35,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:35,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:35,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308948001] [2021-11-13 18:33:35,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308948001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:35,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:35,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:33:35,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147248618] [2021-11-13 18:33:35,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:35,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:33:35,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:35,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:33:35,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:33:35,190 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) [2021-11-13 18:33:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:36,275 INFO L93 Difference]: Finished difference Result 2516 states and 4565 transitions. [2021-11-13 18:33:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:33:36,276 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 [2021-11-13 18:33:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:36,293 INFO L225 Difference]: With dead ends: 2516 [2021-11-13 18:33:36,293 INFO L226 Difference]: Without dead ends: 2351 [2021-11-13 18:33:36,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:33:36,297 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 4377 mSDsluCounter, 12178 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 528.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4389 SdHoareTripleChecker+Valid, 16396 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.50ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 629.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:36,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4389 Valid, 16396 Invalid, 603 Unknown, 0 Unchecked, 79.50ms Time], IncrementalHoareTripleChecker [50 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 629.64ms Time] [2021-11-13 18:33:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-11-13 18:33:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2298. [2021-11-13 18:33:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8428697183098592) internal successors, (4187), 2274 states have internal predecessors, (4187), 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) [2021-11-13 18:33:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4223 transitions. [2021-11-13 18:33:36,381 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4223 transitions. Word has length 90 [2021-11-13 18:33:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:36,382 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4223 transitions. [2021-11-13 18:33:36,382 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) [2021-11-13 18:33:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4223 transitions. [2021-11-13 18:33:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:36,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:36,384 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] [2021-11-13 18:33:36,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:33:36,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1438312920, now seen corresponding path program 1 times [2021-11-13 18:33:36,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:36,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692870389] [2021-11-13 18:33:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:36,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:36,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:36,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692870389] [2021-11-13 18:33:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692870389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:36,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:36,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:33:36,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377905282] [2021-11-13 18:33:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:33:36,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:36,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:33:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:33:36,527 INFO L87 Difference]: Start difference. First operand 2298 states and 4223 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) [2021-11-13 18:33:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:37,367 INFO L93 Difference]: Finished difference Result 2525 states and 4580 transitions. [2021-11-13 18:33:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:37,368 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 [2021-11-13 18:33:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:37,388 INFO L225 Difference]: With dead ends: 2525 [2021-11-13 18:33:37,388 INFO L226 Difference]: Without dead ends: 2360 [2021-11-13 18:33:37,393 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 [2021-11-13 18:33:37,399 INFO L933 BasicCegarLoop]: 4229 mSDtfsCounter, 4476 mSDsluCounter, 12205 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 488.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 16434 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.60ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 581.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:37,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4488 Valid, 16434 Invalid, 637 Unknown, 0 Unchecked, 49.60ms Time], IncrementalHoareTripleChecker [72 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 581.52ms Time] [2021-11-13 18:33:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-11-13 18:33:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2298. [2021-11-13 18:33:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8424295774647887) internal successors, (4186), 2274 states have internal predecessors, (4186), 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) [2021-11-13 18:33:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4222 transitions. [2021-11-13 18:33:37,497 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4222 transitions. Word has length 90 [2021-11-13 18:33:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:37,499 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4222 transitions. [2021-11-13 18:33:37,499 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) [2021-11-13 18:33:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4222 transitions. [2021-11-13 18:33:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:37,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:37,503 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] [2021-11-13 18:33:37,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:33:37,503 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1969431530, now seen corresponding path program 1 times [2021-11-13 18:33:37,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:37,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091828838] [2021-11-13 18:33:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:37,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:37,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:37,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091828838] [2021-11-13 18:33:37,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091828838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:37,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:37,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:33:37,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033780860] [2021-11-13 18:33:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:37,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:33:37,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:33:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:33:37,705 INFO L87 Difference]: Start difference. First operand 2298 states and 4222 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) [2021-11-13 18:33:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:38,694 INFO L93 Difference]: Finished difference Result 2514 states and 4559 transitions. [2021-11-13 18:33:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:33:38,695 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 [2021-11-13 18:33:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:38,715 INFO L225 Difference]: With dead ends: 2514 [2021-11-13 18:33:38,715 INFO L226 Difference]: Without dead ends: 2349 [2021-11-13 18:33:38,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:33:38,729 INFO L933 BasicCegarLoop]: 4208 mSDtfsCounter, 4403 mSDsluCounter, 16251 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 597.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 20459 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.37ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 725.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:38,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 20459 Invalid, 623 Unknown, 0 Unchecked, 54.37ms Time], IncrementalHoareTripleChecker [53 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 725.94ms Time] [2021-11-13 18:33:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-11-13 18:33:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2298. [2021-11-13 18:33:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8411091549295775) internal successors, (4183), 2274 states have internal predecessors, (4183), 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) [2021-11-13 18:33:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4219 transitions. [2021-11-13 18:33:38,852 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4219 transitions. Word has length 90 [2021-11-13 18:33:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:38,854 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4219 transitions. [2021-11-13 18:33:38,854 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) [2021-11-13 18:33:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4219 transitions. [2021-11-13 18:33:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:38,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:38,860 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] [2021-11-13 18:33:38,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:33:38,860 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:38,861 INFO L85 PathProgramCache]: Analyzing trace with hash 414493208, now seen corresponding path program 1 times [2021-11-13 18:33:38,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:38,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500933566] [2021-11-13 18:33:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:38,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:39,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:39,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500933566] [2021-11-13 18:33:39,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500933566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:39,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:39,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:33:39,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249101524] [2021-11-13 18:33:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:39,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:33:39,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:33:39,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:39,032 INFO L87 Difference]: Start difference. First operand 2298 states and 4219 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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) [2021-11-13 18:33:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:41,011 INFO L93 Difference]: Finished difference Result 2742 states and 4898 transitions. [2021-11-13 18:33:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:33:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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 [2021-11-13 18:33:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:41,031 INFO L225 Difference]: With dead ends: 2742 [2021-11-13 18:33:41,031 INFO L226 Difference]: Without dead ends: 2577 [2021-11-13 18:33:41,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:33:41,034 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4615 mSDsluCounter, 20961 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1122.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 25338 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.58ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1388.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:41,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4627 Valid, 25338 Invalid, 1380 Unknown, 0 Unchecked, 76.58ms Time], IncrementalHoareTripleChecker [69 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1388.92ms Time] [2021-11-13 18:33:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2021-11-13 18:33:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2467. [2021-11-13 18:33:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2420 states have (on average 1.8202479338842976) internal successors, (4405), 2423 states have internal predecessors, (4405), 32 states have call successors, (32), 12 states have call predecessors, (32), 13 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2021-11-13 18:33:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4472 transitions. [2021-11-13 18:33:41,133 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4472 transitions. Word has length 90 [2021-11-13 18:33:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:41,134 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 4472 transitions. [2021-11-13 18:33:41,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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) [2021-11-13 18:33:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4472 transitions. [2021-11-13 18:33:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:41,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:41,136 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] [2021-11-13 18:33:41,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:33:41,136 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 491394006, now seen corresponding path program 1 times [2021-11-13 18:33:41,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:41,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129386458] [2021-11-13 18:33:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:41,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:41,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:41,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129386458] [2021-11-13 18:33:41,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129386458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:41,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:41,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:33:41,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311263529] [2021-11-13 18:33:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:41,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:33:41,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:33:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:33:41,240 INFO L87 Difference]: Start difference. First operand 2467 states and 4472 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) [2021-11-13 18:33:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:41,948 INFO L93 Difference]: Finished difference Result 2920 states and 5171 transitions. [2021-11-13 18:33:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:41,949 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 [2021-11-13 18:33:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:41,970 INFO L225 Difference]: With dead ends: 2920 [2021-11-13 18:33:41,970 INFO L226 Difference]: Without dead ends: 2586 [2021-11-13 18:33:41,973 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 [2021-11-13 18:33:41,974 INFO L933 BasicCegarLoop]: 4211 mSDtfsCounter, 4468 mSDsluCounter, 12200 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 411.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 16411 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.28ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 485.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:41,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4480 Valid, 16411 Invalid, 608 Unknown, 0 Unchecked, 37.28ms Time], IncrementalHoareTripleChecker [81 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 485.15ms Time] [2021-11-13 18:33:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-11-13 18:33:42,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2467. [2021-11-13 18:33:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2420 states have (on average 1.8194214876033057) internal successors, (4403), 2423 states have internal predecessors, (4403), 32 states have call successors, (32), 12 states have call predecessors, (32), 13 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2021-11-13 18:33:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4470 transitions. [2021-11-13 18:33:42,073 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4470 transitions. Word has length 90 [2021-11-13 18:33:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:42,073 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 4470 transitions. [2021-11-13 18:33:42,074 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) [2021-11-13 18:33:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4470 transitions. [2021-11-13 18:33:42,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:42,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:42,076 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] [2021-11-13 18:33:42,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:33:42,076 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1895115500, now seen corresponding path program 1 times [2021-11-13 18:33:42,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:42,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030651002] [2021-11-13 18:33:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:42,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:42,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:42,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030651002] [2021-11-13 18:33:42,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030651002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:42,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:42,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:33:42,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579026976] [2021-11-13 18:33:42,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:42,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:33:42,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:33:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:33:42,176 INFO L87 Difference]: Start difference. First operand 2467 states and 4470 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) [2021-11-13 18:33:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:42,896 INFO L93 Difference]: Finished difference Result 2917 states and 5159 transitions. [2021-11-13 18:33:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:42,897 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 [2021-11-13 18:33:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:42,914 INFO L225 Difference]: With dead ends: 2917 [2021-11-13 18:33:42,915 INFO L226 Difference]: Without dead ends: 2583 [2021-11-13 18:33:42,917 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 [2021-11-13 18:33:42,918 INFO L933 BasicCegarLoop]: 4207 mSDtfsCounter, 4466 mSDsluCounter, 12200 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 398.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 16407 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.56ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 501.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:42,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 16407 Invalid, 598 Unknown, 0 Unchecked, 32.56ms Time], IncrementalHoareTripleChecker [81 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 501.90ms Time] [2021-11-13 18:33:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2021-11-13 18:33:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2467. [2021-11-13 18:33:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2420 states have (on average 1.818595041322314) internal successors, (4401), 2423 states have internal predecessors, (4401), 32 states have call successors, (32), 12 states have call predecessors, (32), 13 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2021-11-13 18:33:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4468 transitions. [2021-11-13 18:33:43,011 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4468 transitions. Word has length 90 [2021-11-13 18:33:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:43,011 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 4468 transitions. [2021-11-13 18:33:43,012 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) [2021-11-13 18:33:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4468 transitions. [2021-11-13 18:33:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:43,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:43,014 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] [2021-11-13 18:33:43,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:33:43,014 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1907225622, now seen corresponding path program 1 times [2021-11-13 18:33:43,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:43,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175312920] [2021-11-13 18:33:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:43,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:43,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:43,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:43,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175312920] [2021-11-13 18:33:43,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175312920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:43,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:43,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:33:43,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470573434] [2021-11-13 18:33:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:43,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:33:43,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:33:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:43,124 INFO L87 Difference]: Start difference. First operand 2467 states and 4468 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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) [2021-11-13 18:33:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:44,818 INFO L93 Difference]: Finished difference Result 3435 states and 5936 transitions. [2021-11-13 18:33:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:33:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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 [2021-11-13 18:33:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:44,850 INFO L225 Difference]: With dead ends: 3435 [2021-11-13 18:33:44,850 INFO L226 Difference]: Without dead ends: 3101 [2021-11-13 18:33:44,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:33:44,855 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4689 mSDsluCounter, 20945 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1011.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4707 SdHoareTripleChecker+Valid, 25297 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.45ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1233.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:44,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4707 Valid, 25297 Invalid, 1299 Unknown, 0 Unchecked, 50.45ms Time], IncrementalHoareTripleChecker [73 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1233.13ms Time] [2021-11-13 18:33:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2021-11-13 18:33:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2803. [2021-11-13 18:33:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2714 states have (on average 1.7826086956521738) internal successors, (4838), 2721 states have internal predecessors, (4838), 58 states have call successors, (58), 24 states have call predecessors, (58), 29 states have return successors, (73), 61 states have call predecessors, (73), 58 states have call successors, (73) [2021-11-13 18:33:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4969 transitions. [2021-11-13 18:33:44,994 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4969 transitions. Word has length 90 [2021-11-13 18:33:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:44,994 INFO L470 AbstractCegarLoop]: Abstraction has 2803 states and 4969 transitions. [2021-11-13 18:33:44,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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) [2021-11-13 18:33:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4969 transitions. [2021-11-13 18:33:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:44,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:44,997 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] [2021-11-13 18:33:44,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:33:44,997 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1433801516, now seen corresponding path program 1 times [2021-11-13 18:33:44,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:44,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885665091] [2021-11-13 18:33:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:44,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:45,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:45,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885665091] [2021-11-13 18:33:45,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885665091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:45,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:45,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:33:45,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896638583] [2021-11-13 18:33:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:45,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:33:45,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:33:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:45,137 INFO L87 Difference]: Start difference. First operand 2803 states and 4969 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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) [2021-11-13 18:33:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:46,893 INFO L93 Difference]: Finished difference Result 4688 states and 7833 transitions. [2021-11-13 18:33:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:33:46,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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 [2021-11-13 18:33:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:46,947 INFO L225 Difference]: With dead ends: 4688 [2021-11-13 18:33:46,947 INFO L226 Difference]: Without dead ends: 4018 [2021-11-13 18:33:46,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:33:46,955 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4646 mSDsluCounter, 20945 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 954.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 25293 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.54ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1161.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:46,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4664 Valid, 25293 Invalid, 1285 Unknown, 0 Unchecked, 52.54ms Time], IncrementalHoareTripleChecker [73 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1161.75ms Time] [2021-11-13 18:33:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2021-11-13 18:33:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3484. [2021-11-13 18:33:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3307 states have (on average 1.7290595706078016) internal successors, (5718), 3328 states have internal predecessors, (5718), 108 states have call successors, (108), 48 states have call predecessors, (108), 67 states have return successors, (171), 115 states have call predecessors, (171), 108 states have call successors, (171) [2021-11-13 18:33:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5997 transitions. [2021-11-13 18:33:47,148 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5997 transitions. Word has length 90 [2021-11-13 18:33:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:47,148 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5997 transitions. [2021-11-13 18:33:47,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 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) [2021-11-13 18:33:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5997 transitions. [2021-11-13 18:33:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:47,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:47,152 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] [2021-11-13 18:33:47,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:33:47,153 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1645012054, now seen corresponding path program 1 times [2021-11-13 18:33:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:47,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669848085] [2021-11-13 18:33:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:47,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:47,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:47,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669848085] [2021-11-13 18:33:47,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669848085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:47,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:47,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:33:47,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983024053] [2021-11-13 18:33:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:33:47,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:33:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:33:47,301 INFO L87 Difference]: Start difference. First operand 3484 states and 5997 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) [2021-11-13 18:33:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:48,273 INFO L93 Difference]: Finished difference Result 5293 states and 8753 transitions. [2021-11-13 18:33:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:48,274 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 [2021-11-13 18:33:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:48,290 INFO L225 Difference]: With dead ends: 5293 [2021-11-13 18:33:48,290 INFO L226 Difference]: Without dead ends: 3942 [2021-11-13 18:33:48,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:33:48,297 INFO L933 BasicCegarLoop]: 4198 mSDtfsCounter, 4397 mSDsluCounter, 16248 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 525.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 20446 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.08ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 630.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:48,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 20446 Invalid, 620 Unknown, 0 Unchecked, 46.08ms Time], IncrementalHoareTripleChecker [61 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 630.30ms Time] [2021-11-13 18:33:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2021-11-13 18:33:48,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3484. [2021-11-13 18:33:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3307 states have (on average 1.7266404596310856) internal successors, (5710), 3328 states have internal predecessors, (5710), 108 states have call successors, (108), 48 states have call predecessors, (108), 67 states have return successors, (171), 115 states have call predecessors, (171), 108 states have call successors, (171) [2021-11-13 18:33:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5989 transitions. [2021-11-13 18:33:48,495 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5989 transitions. Word has length 90 [2021-11-13 18:33:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:48,497 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5989 transitions. [2021-11-13 18:33:48,497 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) [2021-11-13 18:33:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5989 transitions. [2021-11-13 18:33:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:33:48,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:48,501 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] [2021-11-13 18:33:48,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:33:48,501 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash 913044628, now seen corresponding path program 1 times [2021-11-13 18:33:48,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:48,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708888490] [2021-11-13 18:33:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:48,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:48,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:48,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:48,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:48,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708888490] [2021-11-13 18:33:48,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708888490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:48,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:48,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:33:48,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712609286] [2021-11-13 18:33:48,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:48,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:33:48,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:33:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:33:48,636 INFO L87 Difference]: Start difference. First operand 3484 states and 5989 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) [2021-11-13 18:33:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:50,177 INFO L93 Difference]: Finished difference Result 6957 states and 11237 transitions. [2021-11-13 18:33:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:33:50,179 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 [2021-11-13 18:33:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:50,203 INFO L225 Difference]: With dead ends: 6957 [2021-11-13 18:33:50,204 INFO L226 Difference]: Without dead ends: 5607 [2021-11-13 18:33:50,212 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 [2021-11-13 18:33:50,213 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 4732 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 868.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 16892 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.80ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1123.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:50,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 16892 Invalid, 1016 Unknown, 0 Unchecked, 33.80ms Time], IncrementalHoareTripleChecker [85 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1123.91ms Time] [2021-11-13 18:33:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-11-13 18:33:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4791. [2021-11-13 18:33:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4791 states, 4443 states have (on average 1.6563133018230924) internal successors, (7359), 4491 states have internal predecessors, (7359), 212 states have call successors, (212), 96 states have call predecessors, (212), 134 states have return successors, (331), 211 states have call predecessors, (331), 212 states have call successors, (331) [2021-11-13 18:33:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4791 states to 4791 states and 7902 transitions. [2021-11-13 18:33:50,592 INFO L78 Accepts]: Start accepts. Automaton has 4791 states and 7902 transitions. Word has length 90 [2021-11-13 18:33:50,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:50,593 INFO L470 AbstractCegarLoop]: Abstraction has 4791 states and 7902 transitions. [2021-11-13 18:33:50,593 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) [2021-11-13 18:33:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4791 states and 7902 transitions. [2021-11-13 18:33:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-13 18:33:50,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:50,605 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] [2021-11-13 18:33:50,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:33:50,606 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1376692520, now seen corresponding path program 1 times [2021-11-13 18:33:50,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:50,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230765816] [2021-11-13 18:33:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:50,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:33:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:33:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 18:33:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 18:33:50,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:50,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230765816] [2021-11-13 18:33:50,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230765816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:33:50,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572053714] [2021-11-13 18:33:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:50,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:50,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:50,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:33:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:50,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:33:50,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:33:51,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:51,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572053714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:51,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:33:51,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 18:33:51,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580716665] [2021-11-13 18:33:51,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:51,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:33:51,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:33:51,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:51,269 INFO L87 Difference]: Start difference. First operand 4791 states and 7902 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) [2021-11-13 18:33:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:51,762 INFO L93 Difference]: Finished difference Result 10048 states and 15766 transitions. [2021-11-13 18:33:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:33:51,763 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 [2021-11-13 18:33:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:51,795 INFO L225 Difference]: With dead ends: 10048 [2021-11-13 18:33:51,795 INFO L226 Difference]: Without dead ends: 7391 [2021-11-13 18:33:51,809 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 [2021-11-13 18:33:51,810 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 4165 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4165 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:51,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4165 Valid, 4454 Invalid, 12 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 9.87ms Time] [2021-11-13 18:33:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2021-11-13 18:33:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 7357. [2021-11-13 18:33:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7357 states, 6675 states have (on average 1.590561797752809) internal successors, (10617), 6769 states have internal predecessors, (10617), 412 states have call successors, (412), 192 states have call predecessors, (412), 268 states have return successors, (643), 403 states have call predecessors, (643), 412 states have call successors, (643) [2021-11-13 18:33:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7357 states to 7357 states and 11672 transitions. [2021-11-13 18:33:52,369 INFO L78 Accepts]: Start accepts. Automaton has 7357 states and 11672 transitions. Word has length 146 [2021-11-13 18:33:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:52,370 INFO L470 AbstractCegarLoop]: Abstraction has 7357 states and 11672 transitions. [2021-11-13 18:33:52,370 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) [2021-11-13 18:33:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7357 states and 11672 transitions. [2021-11-13 18:33:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-13 18:33:52,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:52,388 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] [2021-11-13 18:33:52,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:52,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 18:33:52,605 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1050220280, now seen corresponding path program 1 times [2021-11-13 18:33:52,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:52,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219388642] [2021-11-13 18:33:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:52,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:33:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:33:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 18:33:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 18:33:52,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:52,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219388642] [2021-11-13 18:33:52,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219388642] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:33:52,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000487273] [2021-11-13 18:33:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:52,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:52,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:52,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:52,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:33:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:52,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:33:52,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:33:53,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:53,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000487273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:53,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:33:53,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 18:33:53,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636737312] [2021-11-13 18:33:53,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:53,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:33:53,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:33:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:53,216 INFO L87 Difference]: Start difference. First operand 7357 states and 11672 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) [2021-11-13 18:33:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:54,073 INFO L93 Difference]: Finished difference Result 17642 states and 27012 transitions. [2021-11-13 18:33:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:33:54,073 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 [2021-11-13 18:33:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:54,124 INFO L225 Difference]: With dead ends: 17642 [2021-11-13 18:33:54,124 INFO L226 Difference]: Without dead ends: 12419 [2021-11-13 18:33:54,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:54,151 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 4159 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4159 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:54,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4159 Valid, 4454 Invalid, 12 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 10.65ms Time] [2021-11-13 18:33:54,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2021-11-13 18:33:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 12353. [2021-11-13 18:33:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12353 states, 11027 states have (on average 1.5392219098576223) internal successors, (16973), 11213 states have internal predecessors, (16973), 788 states have call successors, (788), 384 states have call predecessors, (788), 536 states have return successors, (1243), 763 states have call predecessors, (1243), 788 states have call successors, (1243) [2021-11-13 18:33:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12353 states to 12353 states and 19004 transitions. [2021-11-13 18:33:54,990 INFO L78 Accepts]: Start accepts. Automaton has 12353 states and 19004 transitions. Word has length 146 [2021-11-13 18:33:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:54,991 INFO L470 AbstractCegarLoop]: Abstraction has 12353 states and 19004 transitions. [2021-11-13 18:33:54,991 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) [2021-11-13 18:33:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 12353 states and 19004 transitions. [2021-11-13 18:33:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-13 18:33:55,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:55,017 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] [2021-11-13 18:33:55,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:55,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 18:33:55,245 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1469804312, now seen corresponding path program 1 times [2021-11-13 18:33:55,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:55,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541492185] [2021-11-13 18:33:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:55,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:33:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:33:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 18:33:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 18:33:55,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:55,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541492185] [2021-11-13 18:33:55,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541492185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:33:55,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495135111] [2021-11-13 18:33:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:55,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:55,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:55,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:33:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:55,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:33:55,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 18:33:55,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:55,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495135111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:55,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:33:55,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-13 18:33:55,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439641454] [2021-11-13 18:33:55,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:55,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:33:55,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:33:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:55,841 INFO L87 Difference]: Start difference. First operand 12353 states and 19004 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) [2021-11-13 18:33:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:56,883 INFO L93 Difference]: Finished difference Result 32347 states and 48947 transitions. [2021-11-13 18:33:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:33:56,884 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 [2021-11-13 18:33:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:56,997 INFO L225 Difference]: With dead ends: 32347 [2021-11-13 18:33:56,998 INFO L226 Difference]: Without dead ends: 22129 [2021-11-13 18:33:57,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:57,037 INFO L933 BasicCegarLoop]: 4447 mSDtfsCounter, 225 mSDsluCounter, 4213 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 8660 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:57,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 8660 Invalid, 13 Unknown, 0 Unchecked, 7.33ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 13.12ms Time] [2021-11-13 18:33:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22129 states. [2021-11-13 18:33:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22129 to 22129. [2021-11-13 18:33:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22129 states, 19544 states have (on average 1.5012791649611135) internal successors, (29341), 19883 states have internal predecessors, (29341), 1511 states have call successors, (1511), 768 states have call predecessors, (1511), 1072 states have return successors, (2758), 1493 states have call predecessors, (2758), 1511 states have call successors, (2758) [2021-11-13 18:33:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 33610 transitions. [2021-11-13 18:33:58,487 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 33610 transitions. Word has length 146 [2021-11-13 18:33:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:58,488 INFO L470 AbstractCegarLoop]: Abstraction has 22129 states and 33610 transitions. [2021-11-13 18:33:58,489 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) [2021-11-13 18:33:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 33610 transitions. [2021-11-13 18:33:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:33:58,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:58,588 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] [2021-11-13 18:33:58,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:58,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-13 18:33:58,813 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:58,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1630368991, now seen corresponding path program 1 times [2021-11-13 18:33:58,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:58,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538785318] [2021-11-13 18:33:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:58,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:33:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:33:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:33:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:33:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:33:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 18:33:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:33:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-13 18:33:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-13 18:33:59,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:59,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538785318] [2021-11-13 18:33:59,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538785318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:33:59,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097122] [2021-11-13 18:33:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:59,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:59,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:59,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:59,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:33:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:59,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:33:59,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 18:33:59,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:59,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:59,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:33:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 18:33:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813910585] [2021-11-13 18:33:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:59,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:33:59,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:33:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:33:59,643 INFO L87 Difference]: Start difference. First operand 22129 states and 33610 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) [2021-11-13 18:34:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:02,020 INFO L93 Difference]: Finished difference Result 61427 states and 92681 transitions. [2021-11-13 18:34:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:34:02,020 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 [2021-11-13 18:34:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:02,271 INFO L225 Difference]: With dead ends: 61427 [2021-11-13 18:34:02,271 INFO L226 Difference]: Without dead ends: 41439 [2021-11-13 18:34:02,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:02,365 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 4104 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:02,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4104 Valid, 4454 Invalid, 12 Unknown, 0 Unchecked, 7.85ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 10.52ms Time] [2021-11-13 18:34:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41439 states. [2021-11-13 18:34:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41439 to 41181. [2021-11-13 18:34:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41181 states, 36172 states have (on average 1.4800674554904345) internal successors, (53537), 36847 states have internal predecessors, (53537), 2875 states have call successors, (2875), 1524 states have call predecessors, (2875), 2132 states have return successors, (5278), 2825 states have call predecessors, (5278), 2875 states have call successors, (5278) [2021-11-13 18:34:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41181 states to 41181 states and 61690 transitions. [2021-11-13 18:34:05,315 INFO L78 Accepts]: Start accepts. Automaton has 41181 states and 61690 transitions. Word has length 190 [2021-11-13 18:34:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:05,316 INFO L470 AbstractCegarLoop]: Abstraction has 41181 states and 61690 transitions. [2021-11-13 18:34:05,316 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) [2021-11-13 18:34:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 41181 states and 61690 transitions. [2021-11-13 18:34:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:34:05,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:05,435 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] [2021-11-13 18:34:05,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:05,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-13 18:34:05,649 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1817601615, now seen corresponding path program 1 times [2021-11-13 18:34:05,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:05,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043733866] [2021-11-13 18:34:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:05,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:34:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:34:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:34:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:34:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:34:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:34:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:34:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 18:34:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:34:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-13 18:34:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-13 18:34:05,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:05,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043733866] [2021-11-13 18:34:05,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043733866] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:34:05,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590525192] [2021-11-13 18:34:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:05,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:05,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:34:05,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:34:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:06,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:34:06,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 18:34:06,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:34:06,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590525192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:06,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:34:06,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 18:34:06,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148167650] [2021-11-13 18:34:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:06,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:34:06,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:34:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:06,679 INFO L87 Difference]: Start difference. First operand 41181 states and 61690 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) [2021-11-13 18:34:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:10,730 INFO L93 Difference]: Finished difference Result 118327 states and 177393 transitions. [2021-11-13 18:34:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:34:10,731 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 [2021-11-13 18:34:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:11,164 INFO L225 Difference]: With dead ends: 118327 [2021-11-13 18:34:11,164 INFO L226 Difference]: Without dead ends: 79287 [2021-11-13 18:34:11,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:11,612 INFO L933 BasicCegarLoop]: 4228 mSDtfsCounter, 4107 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:11,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4107 Valid, 4457 Invalid, 12 Unknown, 0 Unchecked, 7.21ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 10.31ms Time] [2021-11-13 18:34:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79287 states. [2021-11-13 18:34:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79287 to 78773. [2021-11-13 18:34:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78773 states, 68916 states have (on average 1.466031110337222) internal successors, (101033), 70263 states have internal predecessors, (101033), 5603 states have call successors, (5603), 3036 states have call predecessors, (5603), 4252 states have return successors, (10318), 5489 states have call predecessors, (10318), 5603 states have call successors, (10318) [2021-11-13 18:34:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78773 states to 78773 states and 116954 transitions. [2021-11-13 18:34:17,670 INFO L78 Accepts]: Start accepts. Automaton has 78773 states and 116954 transitions. Word has length 190 [2021-11-13 18:34:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:17,671 INFO L470 AbstractCegarLoop]: Abstraction has 78773 states and 116954 transitions. [2021-11-13 18:34:17,671 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) [2021-11-13 18:34:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 78773 states and 116954 transitions. [2021-11-13 18:34:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-13 18:34:17,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:17,870 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] [2021-11-13 18:34:17,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:18,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:18,085 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash -292460305, now seen corresponding path program 1 times [2021-11-13 18:34:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:18,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877647583] [2021-11-13 18:34:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:18,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:34:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:34:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:34:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:34:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:34:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:34:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:34:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:34:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:34:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:34:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 18:34:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-13 18:34:18,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:18,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877647583] [2021-11-13 18:34:18,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877647583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:34:18,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257062639] [2021-11-13 18:34:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:18,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:18,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:34:18,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:34:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:18,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:34:18,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 18:34:18,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:34:18,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257062639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:18,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:34:18,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-13 18:34:18,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232300346] [2021-11-13 18:34:18,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:18,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:34:18,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:18,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:34:18,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:18,961 INFO L87 Difference]: Start difference. First operand 78773 states and 116954 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) [2021-11-13 18:34:25,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:25,027 INFO L93 Difference]: Finished difference Result 165023 states and 247875 transitions. [2021-11-13 18:34:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:34:25,028 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 [2021-11-13 18:34:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:25,393 INFO L225 Difference]: With dead ends: 165023 [2021-11-13 18:34:25,394 INFO L226 Difference]: Without dead ends: 88393 [2021-11-13 18:34:25,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:25,636 INFO L933 BasicCegarLoop]: 4211 mSDtfsCounter, 4133 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4265 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:25,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4133 Valid, 4265 Invalid, 11 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 12.58ms Time] [2021-11-13 18:34:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88393 states. [2021-11-13 18:34:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88393 to 88393. [2021-11-13 18:34:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88393 states, 77840 states have (on average 1.4290467625899281) internal successors, (111237), 79187 states have internal predecessors, (111237), 5823 states have call successors, (5823), 3512 states have call predecessors, (5823), 4728 states have return successors, (10630), 5709 states have call predecessors, (10630), 5823 states have call successors, (10630) [2021-11-13 18:34:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88393 states to 88393 states and 127690 transitions. [2021-11-13 18:34:32,205 INFO L78 Accepts]: Start accepts. Automaton has 88393 states and 127690 transitions. Word has length 209 [2021-11-13 18:34:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:32,206 INFO L470 AbstractCegarLoop]: Abstraction has 88393 states and 127690 transitions. [2021-11-13 18:34:32,206 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) [2021-11-13 18:34:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 88393 states and 127690 transitions. [2021-11-13 18:34:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-13 18:34:32,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:32,394 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] [2021-11-13 18:34:32,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:32,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 18:34:32,595 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 236895440, now seen corresponding path program 1 times [2021-11-13 18:34:32,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:32,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145114893] [2021-11-13 18:34:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:32,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:34:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:34:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:34:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:34:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:34:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:34:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:34:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:34:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:34:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:34:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 18:34:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-13 18:34:32,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:32,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145114893] [2021-11-13 18:34:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145114893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:34:32,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846146541] [2021-11-13 18:34:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:32,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:32,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:32,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:34:32,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f52175-bd60-415a-8736-25bd850324d3/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:34:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:32,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:34:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:34:33,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:34:33,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846146541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:33,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:34:33,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-13 18:34:33,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023948725] [2021-11-13 18:34:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:33,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:34:33,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:34:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:33,496 INFO L87 Difference]: Start difference. First operand 88393 states and 127690 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)