./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:16:49,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:16:49,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:16:49,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:16:49,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:16:49,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:16:49,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:16:49,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:16:49,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:16:49,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:16:49,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:16:49,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:16:49,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:16:49,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:16:49,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:16:49,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:16:49,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:16:49,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:16:49,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:16:49,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:16:49,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:16:49,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:16:49,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:16:49,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:16:49,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:16:49,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:16:49,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:16:49,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:16:49,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:16:49,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:16:49,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:16:49,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:16:49,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:16:49,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:16:49,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:16:49,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:16:49,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:16:49,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:16:49,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:16:49,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:16:49,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:16:49,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:16:49,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:16:49,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:16:49,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:16:49,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:16:49,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:16:49,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:16:49,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:16:49,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:16:49,757 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:16:49,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:16:49,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:16:49,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:16:49,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:16:49,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:16:49,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:16:49,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:16:49,760 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:16:49,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:16:49,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:16:49,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:16:49,760 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_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e [2021-12-06 17:16:49,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:16:49,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:16:49,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:16:49,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:16:49,957 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:16:49,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2021-12-06 17:16:50,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/data/7884e18a3/4e3cc0cd5e3c46fbb335cf984166afa1/FLAGb0d616c8d [2021-12-06 17:16:50,406 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:16:50,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2021-12-06 17:16:50,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/data/7884e18a3/4e3cc0cd5e3c46fbb335cf984166afa1/FLAGb0d616c8d [2021-12-06 17:16:50,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/data/7884e18a3/4e3cc0cd5e3c46fbb335cf984166afa1 [2021-12-06 17:16:50,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:16:50,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:16:50,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:16:50,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:16:50,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:16:50,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c3ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50, skipping insertion in model container [2021-12-06 17:16:50,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:16:50,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:16:50,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[914,927] [2021-12-06 17:16:50,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2021-12-06 17:16:50,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:16:50,716 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:16:50,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[914,927] [2021-12-06 17:16:50,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2021-12-06 17:16:50,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:16:50,797 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:16:50,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50 WrapperNode [2021-12-06 17:16:50,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:16:50,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:16:50,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:16:50,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:16:50,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,855 INFO L137 Inliner]: procedures = 65, calls = 75, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 692 [2021-12-06 17:16:50,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:16:50,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:16:50,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:16:50,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:16:50,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:16:50,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:16:50,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:16:50,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:16:50,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (1/1) ... [2021-12-06 17:16:50,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:16:50,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:50,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:16:50,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:16:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:16:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 17:16:50,959 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 17:16:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-06 17:16:50,959 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-06 17:16:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-06 17:16:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-06 17:16:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-06 17:16:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-06 17:16:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-06 17:16:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-06 17:16:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-06 17:16:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-06 17:16:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-06 17:16:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-06 17:16:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-06 17:16:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-06 17:16:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-06 17:16:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-06 17:16:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-06 17:16:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-06 17:16:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-06 17:16:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-06 17:16:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:16:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-06 17:16:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-06 17:16:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-06 17:16:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-06 17:16:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:16:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:16:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-06 17:16:50,962 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-06 17:16:51,037 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:16:51,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:16:51,449 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:16:51,460 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:16:51,461 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-06 17:16:51,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:16:51 BoogieIcfgContainer [2021-12-06 17:16:51,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:16:51,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:16:51,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:16:51,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:16:51,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:16:50" (1/3) ... [2021-12-06 17:16:51,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400224a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:16:51, skipping insertion in model container [2021-12-06 17:16:51,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:50" (2/3) ... [2021-12-06 17:16:51,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400224a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:16:51, skipping insertion in model container [2021-12-06 17:16:51,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:16:51" (3/3) ... [2021-12-06 17:16:51,471 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2021-12-06 17:16:51,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:16:51,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:16:51,512 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:16:51,517 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:16:51,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:16:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-06 17:16:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:16:51,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:51,547 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] [2021-12-06 17:16:51,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash 751120114, now seen corresponding path program 1 times [2021-12-06 17:16:51,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:51,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830911427] [2021-12-06 17:16:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:51,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:51,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830911427] [2021-12-06 17:16:51,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830911427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:51,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:51,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:16:51,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241311273] [2021-12-06 17:16:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:51,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:16:51,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:16:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:16:51,849 INFO L87 Difference]: Start difference. First operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:52,515 INFO L93 Difference]: Finished difference Result 779 states and 1212 transitions. [2021-12-06 17:16:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:16:52,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 17:16:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:52,528 INFO L225 Difference]: With dead ends: 779 [2021-12-06 17:16:52,529 INFO L226 Difference]: Without dead ends: 458 [2021-12-06 17:16:52,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:16:52,536 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 846 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:52,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1678 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:16:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-12-06 17:16:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 419. [2021-12-06 17:16:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 350 states have (on average 1.4857142857142858) internal successors, (520), 356 states have internal predecessors, (520), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2021-12-06 17:16:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 613 transitions. [2021-12-06 17:16:52,601 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 613 transitions. Word has length 65 [2021-12-06 17:16:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:52,601 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 613 transitions. [2021-12-06 17:16:52,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 613 transitions. [2021-12-06 17:16:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:16:52,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:52,608 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] [2021-12-06 17:16:52,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:16:52,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1864958542, now seen corresponding path program 1 times [2021-12-06 17:16:52,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:52,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074379550] [2021-12-06 17:16:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:52,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:52,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:52,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074379550] [2021-12-06 17:16:52,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074379550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:52,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:52,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:16:52,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304218953] [2021-12-06 17:16:52,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:52,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:16:52,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:16:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:16:52,714 INFO L87 Difference]: Start difference. First operand 419 states and 613 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:53,323 INFO L93 Difference]: Finished difference Result 766 states and 1090 transitions. [2021-12-06 17:16:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:16:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 17:16:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:53,329 INFO L225 Difference]: With dead ends: 766 [2021-12-06 17:16:53,329 INFO L226 Difference]: Without dead ends: 589 [2021-12-06 17:16:53,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:16:53,331 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1188 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:53,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 1669 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:16:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-12-06 17:16:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 515. [2021-12-06 17:16:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 426 states have (on average 1.4647887323943662) internal successors, (624), 434 states have internal predecessors, (624), 56 states have call successors, (56), 28 states have call predecessors, (56), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2021-12-06 17:16:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 747 transitions. [2021-12-06 17:16:53,376 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 747 transitions. Word has length 65 [2021-12-06 17:16:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:53,377 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 747 transitions. [2021-12-06 17:16:53,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 747 transitions. [2021-12-06 17:16:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:16:53,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:53,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:53,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:16:53,380 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 401422644, now seen corresponding path program 1 times [2021-12-06 17:16:53,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:53,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283474614] [2021-12-06 17:16:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:53,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:53,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:53,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283474614] [2021-12-06 17:16:53,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283474614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:53,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:53,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:16:53,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094297412] [2021-12-06 17:16:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:53,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:16:53,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:16:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:16:53,491 INFO L87 Difference]: Start difference. First operand 515 states and 747 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-06 17:16:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:54,563 INFO L93 Difference]: Finished difference Result 1847 states and 2593 transitions. [2021-12-06 17:16:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 17:16:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-12-06 17:16:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:54,573 INFO L225 Difference]: With dead ends: 1847 [2021-12-06 17:16:54,573 INFO L226 Difference]: Without dead ends: 1562 [2021-12-06 17:16:54,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 17:16:54,577 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 2860 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:54,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2874 Valid, 1915 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:16:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-12-06 17:16:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1401. [2021-12-06 17:16:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1129 states have (on average 1.3808680248007086) internal successors, (1559), 1152 states have internal predecessors, (1559), 144 states have call successors, (144), 111 states have call predecessors, (144), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2021-12-06 17:16:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1881 transitions. [2021-12-06 17:16:54,662 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1881 transitions. Word has length 65 [2021-12-06 17:16:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:54,662 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1881 transitions. [2021-12-06 17:16:54,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-06 17:16:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1881 transitions. [2021-12-06 17:16:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:16:54,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:54,664 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] [2021-12-06 17:16:54,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:16:54,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:54,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1452871733, now seen corresponding path program 1 times [2021-12-06 17:16:54,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:54,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455763368] [2021-12-06 17:16:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:54,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:54,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455763368] [2021-12-06 17:16:54,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455763368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:54,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:54,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:16:54,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780890079] [2021-12-06 17:16:54,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:54,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:16:54,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:54,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:16:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:16:54,758 INFO L87 Difference]: Start difference. First operand 1401 states and 1881 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:16:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:55,275 INFO L93 Difference]: Finished difference Result 2730 states and 3631 transitions. [2021-12-06 17:16:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:16:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-06 17:16:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:55,283 INFO L225 Difference]: With dead ends: 2730 [2021-12-06 17:16:55,283 INFO L226 Difference]: Without dead ends: 1565 [2021-12-06 17:16:55,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:16:55,287 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 404 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:55,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 2229 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:16:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-12-06 17:16:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1431. [2021-12-06 17:16:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1153 states have (on average 1.3660017346053772) internal successors, (1575), 1176 states have internal predecessors, (1575), 144 states have call successors, (144), 111 states have call predecessors, (144), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2021-12-06 17:16:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1903 transitions. [2021-12-06 17:16:55,348 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1903 transitions. Word has length 65 [2021-12-06 17:16:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:55,349 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 1903 transitions. [2021-12-06 17:16:55,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:16:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1903 transitions. [2021-12-06 17:16:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:16:55,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:55,350 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] [2021-12-06 17:16:55,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:16:55,350 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1455892169, now seen corresponding path program 1 times [2021-12-06 17:16:55,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:55,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871041087] [2021-12-06 17:16:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:55,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:55,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:55,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871041087] [2021-12-06 17:16:55,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871041087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:55,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:55,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:16:55,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794116174] [2021-12-06 17:16:55,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:55,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:16:55,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:16:55,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:16:55,428 INFO L87 Difference]: Start difference. First operand 1431 states and 1903 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:56,100 INFO L93 Difference]: Finished difference Result 2780 states and 3605 transitions. [2021-12-06 17:16:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:16:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 17:16:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:56,108 INFO L225 Difference]: With dead ends: 2780 [2021-12-06 17:16:56,108 INFO L226 Difference]: Without dead ends: 1808 [2021-12-06 17:16:56,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:16:56,111 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 1197 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:56,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 1432 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:16:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2021-12-06 17:16:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1373. [2021-12-06 17:16:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1111 states have (on average 1.3636363636363635) internal successors, (1515), 1129 states have internal predecessors, (1515), 138 states have call successors, (138), 106 states have call predecessors, (138), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2021-12-06 17:16:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1822 transitions. [2021-12-06 17:16:56,168 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1822 transitions. Word has length 65 [2021-12-06 17:16:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:56,169 INFO L470 AbstractCegarLoop]: Abstraction has 1373 states and 1822 transitions. [2021-12-06 17:16:56,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1822 transitions. [2021-12-06 17:16:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:16:56,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:56,170 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] [2021-12-06 17:16:56,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:16:56,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1589905675, now seen corresponding path program 1 times [2021-12-06 17:16:56,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:56,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302533132] [2021-12-06 17:16:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:56,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:56,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:56,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302533132] [2021-12-06 17:16:56,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302533132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:56,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:56,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:16:56,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928282086] [2021-12-06 17:16:56,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:56,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:16:56,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:56,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:16:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:16:56,243 INFO L87 Difference]: Start difference. First operand 1373 states and 1822 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:56,587 INFO L93 Difference]: Finished difference Result 3727 states and 4840 transitions. [2021-12-06 17:16:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:16:56,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 17:16:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:56,599 INFO L225 Difference]: With dead ends: 3727 [2021-12-06 17:16:56,599 INFO L226 Difference]: Without dead ends: 2591 [2021-12-06 17:16:56,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:16:56,602 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 1155 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:56,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 1149 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-12-06 17:16:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2471. [2021-12-06 17:16:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 1950 states have (on average 1.303076923076923) internal successors, (2541), 1992 states have internal predecessors, (2541), 268 states have call successors, (268), 205 states have call predecessors, (268), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2021-12-06 17:16:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3190 transitions. [2021-12-06 17:16:56,708 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3190 transitions. Word has length 65 [2021-12-06 17:16:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:56,708 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 3190 transitions. [2021-12-06 17:16:56,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:16:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3190 transitions. [2021-12-06 17:16:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:16:56,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:56,709 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] [2021-12-06 17:16:56,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:16:56,709 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:56,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1359463327, now seen corresponding path program 1 times [2021-12-06 17:16:56,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783131460] [2021-12-06 17:16:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:56,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:56,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783131460] [2021-12-06 17:16:56,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783131460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:56,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:56,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:16:56,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571969175] [2021-12-06 17:16:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:16:56,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:56,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:16:56,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:16:56,768 INFO L87 Difference]: Start difference. First operand 2471 states and 3190 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:16:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:57,161 INFO L93 Difference]: Finished difference Result 5865 states and 7498 transitions. [2021-12-06 17:16:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:16:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-06 17:16:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:57,176 INFO L225 Difference]: With dead ends: 5865 [2021-12-06 17:16:57,176 INFO L226 Difference]: Without dead ends: 3636 [2021-12-06 17:16:57,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:16:57,181 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 575 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:57,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1368 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:16:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2021-12-06 17:16:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3305. [2021-12-06 17:16:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 2595 states have (on average 1.2882466281310212) internal successors, (3343), 2644 states have internal predecessors, (3343), 364 states have call successors, (364), 285 states have call predecessors, (364), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2021-12-06 17:16:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4207 transitions. [2021-12-06 17:16:57,331 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4207 transitions. Word has length 66 [2021-12-06 17:16:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:57,331 INFO L470 AbstractCegarLoop]: Abstraction has 3305 states and 4207 transitions. [2021-12-06 17:16:57,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:16:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4207 transitions. [2021-12-06 17:16:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 17:16:57,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:57,333 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] [2021-12-06 17:16:57,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:16:57,333 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1540190304, now seen corresponding path program 1 times [2021-12-06 17:16:57,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:57,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171468936] [2021-12-06 17:16:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:57,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:57,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171468936] [2021-12-06 17:16:57,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171468936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:57,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:57,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:16:57,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100419909] [2021-12-06 17:16:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:57,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:16:57,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:16:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:16:57,393 INFO L87 Difference]: Start difference. First operand 3305 states and 4207 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:16:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:57,694 INFO L93 Difference]: Finished difference Result 7291 states and 9206 transitions. [2021-12-06 17:16:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:16:57,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-06 17:16:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:57,711 INFO L225 Difference]: With dead ends: 7291 [2021-12-06 17:16:57,712 INFO L226 Difference]: Without dead ends: 4226 [2021-12-06 17:16:57,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:16:57,718 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 1119 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:57,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 997 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-12-06 17:16:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3880. [2021-12-06 17:16:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3050 states have (on average 1.280983606557377) internal successors, (3907), 3103 states have internal predecessors, (3907), 423 states have call successors, (423), 335 states have call predecessors, (423), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2021-12-06 17:16:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4912 transitions. [2021-12-06 17:16:57,871 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4912 transitions. Word has length 72 [2021-12-06 17:16:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:57,872 INFO L470 AbstractCegarLoop]: Abstraction has 3880 states and 4912 transitions. [2021-12-06 17:16:57,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:16:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4912 transitions. [2021-12-06 17:16:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 17:16:57,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:57,873 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:57,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:16:57,873 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748717, now seen corresponding path program 1 times [2021-12-06 17:16:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101196727] [2021-12-06 17:16:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:57,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:57,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101196727] [2021-12-06 17:16:57,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101196727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:57,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:57,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:16:57,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881666010] [2021-12-06 17:16:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:57,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:16:57,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:16:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:16:57,939 INFO L87 Difference]: Start difference. First operand 3880 states and 4912 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:16:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:58,310 INFO L93 Difference]: Finished difference Result 5062 states and 6368 transitions. [2021-12-06 17:16:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:16:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-12-06 17:16:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:58,335 INFO L225 Difference]: With dead ends: 5062 [2021-12-06 17:16:58,335 INFO L226 Difference]: Without dead ends: 5059 [2021-12-06 17:16:58,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:16:58,337 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 1353 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:58,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 1181 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2021-12-06 17:16:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 4347. [2021-12-06 17:16:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3407 states have (on average 1.2717933665981802) internal successors, (4333), 3464 states have internal predecessors, (4333), 476 states have call successors, (476), 379 states have call predecessors, (476), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2021-12-06 17:16:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5473 transitions. [2021-12-06 17:16:58,557 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5473 transitions. Word has length 73 [2021-12-06 17:16:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:58,557 INFO L470 AbstractCegarLoop]: Abstraction has 4347 states and 5473 transitions. [2021-12-06 17:16:58,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:16:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5473 transitions. [2021-12-06 17:16:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 17:16:58,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:58,559 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:58,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:16:58,559 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1486432694, now seen corresponding path program 1 times [2021-12-06 17:16:58,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290738859] [2021-12-06 17:16:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:58,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:16:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:16:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:16:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:16:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:58,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:58,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290738859] [2021-12-06 17:16:58,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290738859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:58,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035831827] [2021-12-06 17:16:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:58,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:58,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:58,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:16:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:58,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:16:58,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:58,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:16:59,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035831827] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:59,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:16:59,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-06 17:16:59,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291559938] [2021-12-06 17:16:59,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:59,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:16:59,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:16:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:16:59,183 INFO L87 Difference]: Start difference. First operand 4347 states and 5473 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 17:17:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:00,328 INFO L93 Difference]: Finished difference Result 8888 states and 11081 transitions. [2021-12-06 17:17:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:17:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2021-12-06 17:17:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:00,370 INFO L225 Difference]: With dead ends: 8888 [2021-12-06 17:17:00,371 INFO L226 Difference]: Without dead ends: 8885 [2021-12-06 17:17:00,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:17:00,374 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 1572 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:00,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 2139 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:17:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8885 states. [2021-12-06 17:17:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8885 to 7816. [2021-12-06 17:17:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 6109 states have (on average 1.2594532656735964) internal successors, (7694), 6210 states have internal predecessors, (7694), 855 states have call successors, (855), 693 states have call predecessors, (855), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2021-12-06 17:17:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 9750 transitions. [2021-12-06 17:17:00,718 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 9750 transitions. Word has length 74 [2021-12-06 17:17:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:00,718 INFO L470 AbstractCegarLoop]: Abstraction has 7816 states and 9750 transitions. [2021-12-06 17:17:00,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 17:17:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 9750 transitions. [2021-12-06 17:17:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 17:17:00,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:00,720 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-06 17:17:00,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:17:00,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a57988-5261-4280-bd51-7a7a5e4fad88/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:17:00,922 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1906520915, now seen corresponding path program 2 times [2021-12-06 17:17:00,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:00,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437193741] [2021-12-06 17:17:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:00,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:17:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:17:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:17:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:17:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:17:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:17:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:01,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:01,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437193741] [2021-12-06 17:17:01,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437193741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:01,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:01,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:17:01,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116381706] [2021-12-06 17:17:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:01,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:17:01,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:17:01,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:17:01,089 INFO L87 Difference]: Start difference. First operand 7816 states and 9750 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:17:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:01,431 INFO L93 Difference]: Finished difference Result 10526 states and 13162 transitions. [2021-12-06 17:17:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:17:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2021-12-06 17:17:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:01,445 INFO L225 Difference]: With dead ends: 10526 [2021-12-06 17:17:01,445 INFO L226 Difference]: Without dead ends: 4309 [2021-12-06 17:17:01,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:17:01,456 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 1013 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:01,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 1054 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:17:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2021-12-06 17:17:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3192. [2021-12-06 17:17:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2517 states have (on average 1.2590385379419944) internal successors, (3169), 2552 states have internal predecessors, (3169), 348 states have call successors, (348), 275 states have call predecessors, (348), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2021-12-06 17:17:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 3977 transitions. [2021-12-06 17:17:01,597 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 3977 transitions. Word has length 77 [2021-12-06 17:17:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:01,598 INFO L470 AbstractCegarLoop]: Abstraction has 3192 states and 3977 transitions. [2021-12-06 17:17:01,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:17:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 3977 transitions. [2021-12-06 17:17:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 17:17:01,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:01,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:01,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:17:01,600 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1402994660, now seen corresponding path program 1 times [2021-12-06 17:17:01,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:01,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429851114] [2021-12-06 17:17:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:01,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:17:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:17:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:17:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:17:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:17:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:17:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:17:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:17:01,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:01,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429851114] [2021-12-06 17:17:01,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429851114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:01,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:01,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:17:01,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049779714] [2021-12-06 17:17:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:01,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:17:01,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:17:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:17:01,660 INFO L87 Difference]: Start difference. First operand 3192 states and 3977 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:17:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:02,462 INFO L93 Difference]: Finished difference Result 9248 states and 11441 transitions. [2021-12-06 17:17:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 17:17:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2021-12-06 17:17:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:02,481 INFO L225 Difference]: With dead ends: 9248 [2021-12-06 17:17:02,481 INFO L226 Difference]: Without dead ends: 5433 [2021-12-06 17:17:02,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:17:02,487 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1136 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:02,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 1712 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:17:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-12-06 17:17:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5086. [2021-12-06 17:17:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3956 states have (on average 1.2287664307381194) internal successors, (4861), 4022 states have internal predecessors, (4861), 566 states have call successors, (566), 447 states have call predecessors, (566), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2021-12-06 17:17:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 6281 transitions. [2021-12-06 17:17:02,682 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 6281 transitions. Word has length 84 [2021-12-06 17:17:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:02,682 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 6281 transitions. [2021-12-06 17:17:02,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:17:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 6281 transitions. [2021-12-06 17:17:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 17:17:02,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:02,685 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:17:02,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:17:02,685 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:02,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1990740177, now seen corresponding path program 1 times [2021-12-06 17:17:02,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:02,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978004031] [2021-12-06 17:17:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:02,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:17:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:17:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:17:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:17:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:17:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:17:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:17:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:17:02,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:02,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978004031] [2021-12-06 17:17:02,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978004031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:02,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:02,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:17:02,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621903484] [2021-12-06 17:17:02,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:02,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:17:02,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:17:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:17:02,759 INFO L87 Difference]: Start difference. First operand 5086 states and 6281 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:17:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:03,503 INFO L93 Difference]: Finished difference Result 9442 states and 11544 transitions. [2021-12-06 17:17:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:17:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2021-12-06 17:17:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:03,515 INFO L225 Difference]: With dead ends: 9442 [2021-12-06 17:17:03,515 INFO L226 Difference]: Without dead ends: 5165 [2021-12-06 17:17:03,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:17:03,522 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 2088 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:03,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2121 Valid, 1493 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:17:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2021-12-06 17:17:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4794. [2021-12-06 17:17:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.2074353448275863) internal successors, (4482), 3780 states have internal predecessors, (4482), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2021-12-06 17:17:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5763 transitions. [2021-12-06 17:17:03,739 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5763 transitions. Word has length 93 [2021-12-06 17:17:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:03,739 INFO L470 AbstractCegarLoop]: Abstraction has 4794 states and 5763 transitions. [2021-12-06 17:17:03,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:17:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5763 transitions. [2021-12-06 17:17:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:03,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:03,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:03,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:17:03,742 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:03,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 991651678, now seen corresponding path program 1 times [2021-12-06 17:17:03,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:03,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522645316] [2021-12-06 17:17:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:03,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:03,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:03,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522645316] [2021-12-06 17:17:03,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522645316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:03,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:03,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:17:03,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463575961] [2021-12-06 17:17:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:03,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:17:03,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:17:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:17:03,806 INFO L87 Difference]: Start difference. First operand 4794 states and 5763 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:04,541 INFO L93 Difference]: Finished difference Result 5085 states and 6223 transitions. [2021-12-06 17:17:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:17:04,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:04,553 INFO L225 Difference]: With dead ends: 5085 [2021-12-06 17:17:04,553 INFO L226 Difference]: Without dead ends: 4870 [2021-12-06 17:17:04,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:17:04,555 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 678 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:04,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 934 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:17:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2021-12-06 17:17:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4794. [2021-12-06 17:17:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.207165948275862) internal successors, (4481), 3780 states have internal predecessors, (4481), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2021-12-06 17:17:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5762 transitions. [2021-12-06 17:17:04,835 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5762 transitions. Word has length 112 [2021-12-06 17:17:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:04,835 INFO L470 AbstractCegarLoop]: Abstraction has 4794 states and 5762 transitions. [2021-12-06 17:17:04,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5762 transitions. [2021-12-06 17:17:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:04,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:04,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:17:04,838 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1396912352, now seen corresponding path program 1 times [2021-12-06 17:17:04,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585823745] [2021-12-06 17:17:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:04,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:04,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:04,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585823745] [2021-12-06 17:17:04,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585823745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:04,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:04,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:04,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079275784] [2021-12-06 17:17:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:04,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:04,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:04,926 INFO L87 Difference]: Start difference. First operand 4794 states and 5762 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:06,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:06,354 INFO L93 Difference]: Finished difference Result 5391 states and 6718 transitions. [2021-12-06 17:17:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:17:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:06,364 INFO L225 Difference]: With dead ends: 5391 [2021-12-06 17:17:06,364 INFO L226 Difference]: Without dead ends: 5178 [2021-12-06 17:17:06,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:17:06,366 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1035 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:06,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 2081 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:17:06,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2021-12-06 17:17:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5017. [2021-12-06 17:17:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3910 states have (on average 1.2255754475703324) internal successors, (4792), 3980 states have internal predecessors, (4792), 553 states have call successors, (553), 435 states have call predecessors, (553), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2021-12-06 17:17:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6114 transitions. [2021-12-06 17:17:06,641 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6114 transitions. Word has length 112 [2021-12-06 17:17:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:06,641 INFO L470 AbstractCegarLoop]: Abstraction has 5017 states and 6114 transitions. [2021-12-06 17:17:06,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6114 transitions. [2021-12-06 17:17:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:06,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:06,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:06,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:17:06,644 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:06,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1279080030, now seen corresponding path program 1 times [2021-12-06 17:17:06,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:06,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191357478] [2021-12-06 17:17:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:06,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:06,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:06,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191357478] [2021-12-06 17:17:06,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191357478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:06,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:06,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:06,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16325714] [2021-12-06 17:17:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:06,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:06,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:06,715 INFO L87 Difference]: Start difference. First operand 5017 states and 6114 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:08,126 INFO L93 Difference]: Finished difference Result 6150 states and 7910 transitions. [2021-12-06 17:17:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:17:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:08,138 INFO L225 Difference]: With dead ends: 6150 [2021-12-06 17:17:08,138 INFO L226 Difference]: Without dead ends: 5716 [2021-12-06 17:17:08,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:17:08,142 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 1059 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:08,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1949 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:17:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2021-12-06 17:17:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5427. [2021-12-06 17:17:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 4276 states have (on average 1.2523386342376053) internal successors, (5355), 4348 states have internal predecessors, (5355), 583 states have call successors, (583), 447 states have call predecessors, (583), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2021-12-06 17:17:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 6747 transitions. [2021-12-06 17:17:08,459 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 6747 transitions. Word has length 112 [2021-12-06 17:17:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:08,459 INFO L470 AbstractCegarLoop]: Abstraction has 5427 states and 6747 transitions. [2021-12-06 17:17:08,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 6747 transitions. [2021-12-06 17:17:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:08,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:08,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:08,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:17:08,462 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash 395571040, now seen corresponding path program 1 times [2021-12-06 17:17:08,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974394895] [2021-12-06 17:17:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:08,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:08,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:08,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974394895] [2021-12-06 17:17:08,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974394895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:08,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:08,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:08,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889044989] [2021-12-06 17:17:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:08,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:08,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:08,546 INFO L87 Difference]: Start difference. First operand 5427 states and 6747 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:10,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:10,014 INFO L93 Difference]: Finished difference Result 7634 states and 10235 transitions. [2021-12-06 17:17:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:17:10,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:10,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:10,027 INFO L225 Difference]: With dead ends: 7634 [2021-12-06 17:17:10,027 INFO L226 Difference]: Without dead ends: 6790 [2021-12-06 17:17:10,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:17:10,032 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1034 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:10,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 2064 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:17:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2021-12-06 17:17:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6249. [2021-12-06 17:17:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 5010 states have (on average 1.2940119760479043) internal successors, (6483), 5086 states have internal predecessors, (6483), 643 states have call successors, (643), 471 states have call predecessors, (643), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2021-12-06 17:17:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8021 transitions. [2021-12-06 17:17:10,376 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8021 transitions. Word has length 112 [2021-12-06 17:17:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:10,377 INFO L470 AbstractCegarLoop]: Abstraction has 6249 states and 8021 transitions. [2021-12-06 17:17:10,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8021 transitions. [2021-12-06 17:17:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:10,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:10,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:10,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:17:10,380 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash 367070750, now seen corresponding path program 1 times [2021-12-06 17:17:10,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:10,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252308853] [2021-12-06 17:17:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:10,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:10,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:10,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252308853] [2021-12-06 17:17:10,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252308853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:10,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:10,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022602090] [2021-12-06 17:17:10,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:10,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:10,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:10,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:10,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:10,446 INFO L87 Difference]: Start difference. First operand 6249 states and 8021 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:12,010 INFO L93 Difference]: Finished difference Result 10600 states and 14899 transitions. [2021-12-06 17:17:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:17:12,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:12,042 INFO L225 Difference]: With dead ends: 10600 [2021-12-06 17:17:12,042 INFO L226 Difference]: Without dead ends: 8934 [2021-12-06 17:17:12,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:17:12,047 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 1034 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:12,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 2061 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:17:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8934 states. [2021-12-06 17:17:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8934 to 7899. [2021-12-06 17:17:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 6484 states have (on average 1.3490129549660703) internal successors, (8747), 6568 states have internal predecessors, (8747), 763 states have call successors, (763), 519 states have call predecessors, (763), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2021-12-06 17:17:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10595 transitions. [2021-12-06 17:17:12,498 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10595 transitions. Word has length 112 [2021-12-06 17:17:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:12,498 INFO L470 AbstractCegarLoop]: Abstraction has 7899 states and 10595 transitions. [2021-12-06 17:17:12,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10595 transitions. [2021-12-06 17:17:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:12,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:12,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:12,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:17:12,502 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1573511264, now seen corresponding path program 1 times [2021-12-06 17:17:12,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:12,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059353206] [2021-12-06 17:17:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:12,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:12,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059353206] [2021-12-06 17:17:12,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059353206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:12,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:12,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:12,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188818694] [2021-12-06 17:17:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:12,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:12,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:12,579 INFO L87 Difference]: Start difference. First operand 7899 states and 10595 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:13,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:13,697 INFO L93 Difference]: Finished difference Result 12307 states and 17652 transitions. [2021-12-06 17:17:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:17:13,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:13,713 INFO L225 Difference]: With dead ends: 12307 [2021-12-06 17:17:13,714 INFO L226 Difference]: Without dead ends: 8989 [2021-12-06 17:17:13,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:17:13,722 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 843 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:13,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1231 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:17:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8989 states. [2021-12-06 17:17:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8989 to 7899. [2021-12-06 17:17:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 6484 states have (on average 1.3463911165946947) internal successors, (8730), 6568 states have internal predecessors, (8730), 763 states have call successors, (763), 519 states have call predecessors, (763), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2021-12-06 17:17:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10578 transitions. [2021-12-06 17:17:14,160 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10578 transitions. Word has length 112 [2021-12-06 17:17:14,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:14,160 INFO L470 AbstractCegarLoop]: Abstraction has 7899 states and 10578 transitions. [2021-12-06 17:17:14,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:14,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10578 transitions. [2021-12-06 17:17:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:14,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:14,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:14,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:17:14,165 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:14,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:14,166 INFO L85 PathProgramCache]: Analyzing trace with hash 303551966, now seen corresponding path program 1 times [2021-12-06 17:17:14,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:14,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508344352] [2021-12-06 17:17:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:14,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:14,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:14,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508344352] [2021-12-06 17:17:14,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508344352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:14,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:14,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:14,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439319163] [2021-12-06 17:17:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:14,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:14,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:14,238 INFO L87 Difference]: Start difference. First operand 7899 states and 10578 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:16,105 INFO L93 Difference]: Finished difference Result 16513 states and 24169 transitions. [2021-12-06 17:17:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:17:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:16,132 INFO L225 Difference]: With dead ends: 16513 [2021-12-06 17:17:16,132 INFO L226 Difference]: Without dead ends: 13197 [2021-12-06 17:17:16,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:17:16,143 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 1031 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:16,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 2052 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:17:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13197 states. [2021-12-06 17:17:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13197 to 11228. [2021-12-06 17:17:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11228 states, 9461 states have (on average 1.4033400274812389) internal successors, (13277), 9561 states have internal predecessors, (13277), 1003 states have call successors, (1003), 615 states have call predecessors, (1003), 762 states have return successors, (1519), 1085 states have call predecessors, (1519), 1002 states have call successors, (1519) [2021-12-06 17:17:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11228 states to 11228 states and 15799 transitions. [2021-12-06 17:17:16,758 INFO L78 Accepts]: Start accepts. Automaton has 11228 states and 15799 transitions. Word has length 112 [2021-12-06 17:17:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:16,758 INFO L470 AbstractCegarLoop]: Abstraction has 11228 states and 15799 transitions. [2021-12-06 17:17:16,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 11228 states and 15799 transitions. [2021-12-06 17:17:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:16,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:16,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 17:17:16,763 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash -467181600, now seen corresponding path program 1 times [2021-12-06 17:17:16,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:16,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935488810] [2021-12-06 17:17:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:16,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:16,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:16,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935488810] [2021-12-06 17:17:16,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935488810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:16,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:16,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:16,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220124840] [2021-12-06 17:17:16,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:16,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:16,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:16,837 INFO L87 Difference]: Start difference. First operand 11228 states and 15799 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:19,616 INFO L93 Difference]: Finished difference Result 31346 states and 47512 transitions. [2021-12-06 17:17:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:17:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:19,665 INFO L225 Difference]: With dead ends: 31346 [2021-12-06 17:17:19,665 INFO L226 Difference]: Without dead ends: 24701 [2021-12-06 17:17:19,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:17:19,685 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 1097 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:19,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 2141 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:17:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24701 states. [2021-12-06 17:17:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24701 to 17821. [2021-12-06 17:17:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17821 states, 15382 states have (on average 1.45319204264725) internal successors, (22353), 15514 states have internal predecessors, (22353), 1451 states have call successors, (1451), 807 states have call predecessors, (1451), 986 states have return successors, (2517), 1565 states have call predecessors, (2517), 1450 states have call successors, (2517) [2021-12-06 17:17:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 26321 transitions. [2021-12-06 17:17:20,717 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 26321 transitions. Word has length 112 [2021-12-06 17:17:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:20,717 INFO L470 AbstractCegarLoop]: Abstraction has 17821 states and 26321 transitions. [2021-12-06 17:17:20,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 26321 transitions. [2021-12-06 17:17:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:20,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:20,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:20,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:17:20,725 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1461875298, now seen corresponding path program 1 times [2021-12-06 17:17:20,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:20,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819994878] [2021-12-06 17:17:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:20,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:20,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:20,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:20,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819994878] [2021-12-06 17:17:20,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819994878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:20,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:20,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:20,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313014638] [2021-12-06 17:17:20,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:20,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:20,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:20,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:20,784 INFO L87 Difference]: Start difference. First operand 17821 states and 26321 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:24,721 INFO L93 Difference]: Finished difference Result 56085 states and 87374 transitions. [2021-12-06 17:17:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:17:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:24,817 INFO L225 Difference]: With dead ends: 56085 [2021-12-06 17:17:24,817 INFO L226 Difference]: Without dead ends: 42847 [2021-12-06 17:17:24,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:17:24,850 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1089 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:24,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 2105 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:17:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42847 states. [2021-12-06 17:17:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42847 to 31038. [2021-12-06 17:17:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31038 states, 27287 states have (on average 1.490196797009565) internal successors, (40663), 27483 states have internal predecessors, (40663), 2315 states have call successors, (2315), 1191 states have call predecessors, (2315), 1434 states have return successors, (4967), 2493 states have call predecessors, (4967), 2314 states have call successors, (4967) [2021-12-06 17:17:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31038 states to 31038 states and 47945 transitions. [2021-12-06 17:17:26,740 INFO L78 Accepts]: Start accepts. Automaton has 31038 states and 47945 transitions. Word has length 112 [2021-12-06 17:17:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:26,741 INFO L470 AbstractCegarLoop]: Abstraction has 31038 states and 47945 transitions. [2021-12-06 17:17:26,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31038 states and 47945 transitions. [2021-12-06 17:17:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:26,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:26,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:26,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 17:17:26,756 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:26,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash 874517212, now seen corresponding path program 1 times [2021-12-06 17:17:26,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:26,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938425369] [2021-12-06 17:17:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:26,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:26,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:26,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938425369] [2021-12-06 17:17:26,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938425369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:26,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:26,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:26,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327847282] [2021-12-06 17:17:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:26,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:26,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:26,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:26,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:26,825 INFO L87 Difference]: Start difference. First operand 31038 states and 47945 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:33,131 INFO L93 Difference]: Finished difference Result 105208 states and 168424 transitions. [2021-12-06 17:17:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:17:33,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:33,339 INFO L225 Difference]: With dead ends: 105208 [2021-12-06 17:17:33,340 INFO L226 Difference]: Without dead ends: 78753 [2021-12-06 17:17:33,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:17:33,408 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1193 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:33,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 1926 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:17:33,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78753 states. [2021-12-06 17:17:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78753 to 57408. [2021-12-06 17:17:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57408 states, 51097 states have (on average 1.5137287903399417) internal successors, (77347), 51421 states have internal predecessors, (77347), 3979 states have call successors, (3979), 1959 states have call predecessors, (3979), 2330 states have return successors, (11261), 4285 states have call predecessors, (11261), 3978 states have call successors, (11261) [2021-12-06 17:17:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57408 states to 57408 states and 92587 transitions. [2021-12-06 17:17:36,987 INFO L78 Accepts]: Start accepts. Automaton has 57408 states and 92587 transitions. Word has length 112 [2021-12-06 17:17:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:36,987 INFO L470 AbstractCegarLoop]: Abstraction has 57408 states and 92587 transitions. [2021-12-06 17:17:36,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 57408 states and 92587 transitions. [2021-12-06 17:17:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:37,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:37,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:37,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 17:17:37,011 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1543967266, now seen corresponding path program 1 times [2021-12-06 17:17:37,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:37,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315065523] [2021-12-06 17:17:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:37,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:37,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:37,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:37,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:37,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:37,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315065523] [2021-12-06 17:17:37,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315065523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:37,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:37,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:37,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338708277] [2021-12-06 17:17:37,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:37,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:37,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:37,068 INFO L87 Difference]: Start difference. First operand 57408 states and 92587 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:48,320 INFO L93 Difference]: Finished difference Result 201086 states and 332580 transitions. [2021-12-06 17:17:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:17:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:17:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:48,745 INFO L225 Difference]: With dead ends: 201086 [2021-12-06 17:17:48,745 INFO L226 Difference]: Without dead ends: 148261 [2021-12-06 17:17:48,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:17:48,852 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 1144 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:48,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2019 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:17:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148261 states. [2021-12-06 17:17:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148261 to 110020. [2021-12-06 17:17:56,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110020 states, 98717 states have (on average 1.528034685008661) internal successors, (150843), 99297 states have internal predecessors, (150843), 7179 states have call successors, (7179), 3495 states have call predecessors, (7179), 4122 states have return successors, (28095), 7741 states have call predecessors, (28095), 7178 states have call successors, (28095) [2021-12-06 17:17:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110020 states to 110020 states and 186117 transitions. [2021-12-06 17:17:56,502 INFO L78 Accepts]: Start accepts. Automaton has 110020 states and 186117 transitions. Word has length 112 [2021-12-06 17:17:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:56,502 INFO L470 AbstractCegarLoop]: Abstraction has 110020 states and 186117 transitions. [2021-12-06 17:17:56,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:17:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 110020 states and 186117 transitions. [2021-12-06 17:17:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:17:56,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:56,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:56,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:17:56,548 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:56,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 871869084, now seen corresponding path program 1 times [2021-12-06 17:17:56,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:56,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652979828] [2021-12-06 17:17:56,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:56,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:56,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:17:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:17:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:17:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:17:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:17:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:17:56,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:56,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652979828] [2021-12-06 17:17:56,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652979828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:56,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:56,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:17:56,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005137409] [2021-12-06 17:17:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:56,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:17:56,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:17:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:17:56,615 INFO L87 Difference]: Start difference. First operand 110020 states and 186117 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:18:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:16,755 INFO L93 Difference]: Finished difference Result 388106 states and 670836 transitions. [2021-12-06 17:18:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:18:16,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:18:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:17,910 INFO L225 Difference]: With dead ends: 388106 [2021-12-06 17:18:17,910 INFO L226 Difference]: Without dead ends: 282669 [2021-12-06 17:18:18,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:18:18,317 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 1062 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:18,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 2042 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:18:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282669 states. [2021-12-06 17:18:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282669 to 214988. [2021-12-06 17:18:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214988 states, 193957 states have (on average 1.5368921977551726) internal successors, (298091), 195049 states have internal predecessors, (298091), 13323 states have call successors, (13323), 6567 states have call predecessors, (13323), 7706 states have return successors, (74629), 14397 states have call predecessors, (74629), 13322 states have call successors, (74629) [2021-12-06 17:18:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214988 states to 214988 states and 386043 transitions. [2021-12-06 17:18:34,642 INFO L78 Accepts]: Start accepts. Automaton has 214988 states and 386043 transitions. Word has length 112 [2021-12-06 17:18:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:34,642 INFO L470 AbstractCegarLoop]: Abstraction has 214988 states and 386043 transitions. [2021-12-06 17:18:34,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:18:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 214988 states and 386043 transitions. [2021-12-06 17:18:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:18:34,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:34,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:34,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:18:34,728 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2098242018, now seen corresponding path program 1 times [2021-12-06 17:18:34,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:34,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59152340] [2021-12-06 17:18:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:34,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:18:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:18:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:34,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:18:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:18:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:18:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:34,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59152340] [2021-12-06 17:18:34,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59152340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:34,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:34,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:18:34,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506335737] [2021-12-06 17:18:34,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:34,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:18:34,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:18:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:18:34,786 INFO L87 Difference]: Start difference. First operand 214988 states and 386043 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:19:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:13,894 INFO L93 Difference]: Finished difference Result 752674 states and 1384732 transitions. [2021-12-06 17:19:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:19:13,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:19:13,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:16,725 INFO L225 Difference]: With dead ends: 752674 [2021-12-06 17:19:16,726 INFO L226 Difference]: Without dead ends: 542269 [2021-12-06 17:19:17,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:19:17,306 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1068 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:17,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 2010 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:19:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542269 states. [2021-12-06 17:19:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542269 to 424412. [2021-12-06 17:19:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424412 states, 384437 states have (on average 1.5427729380886854) internal successors, (593099), 386553 states have internal predecessors, (593099), 25099 states have call successors, (25099), 12711 states have call predecessors, (25099), 14874 states have return successors, (206551), 27197 states have call predecessors, (206551), 25098 states have call successors, (206551) [2021-12-06 17:19:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424412 states to 424412 states and 824749 transitions. [2021-12-06 17:19:50,938 INFO L78 Accepts]: Start accepts. Automaton has 424412 states and 824749 transitions. Word has length 112 [2021-12-06 17:19:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:50,938 INFO L470 AbstractCegarLoop]: Abstraction has 424412 states and 824749 transitions. [2021-12-06 17:19:50,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:19:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 424412 states and 824749 transitions. [2021-12-06 17:19:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:19:51,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:51,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:51,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 17:19:51,111 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -531484068, now seen corresponding path program 1 times [2021-12-06 17:19:51,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602446232] [2021-12-06 17:19:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:51,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:19:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:19:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:51,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:19:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:19:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:19:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:19:51,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:51,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602446232] [2021-12-06 17:19:51,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602446232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:19:51,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:19:51,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:19:51,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075372257] [2021-12-06 17:19:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:19:51,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:19:51,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:19:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:19:51,187 INFO L87 Difference]: Start difference. First operand 424412 states and 824749 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:21:07,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:07,842 INFO L93 Difference]: Finished difference Result 1192482 states and 2158267 transitions. [2021-12-06 17:21:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:21:07,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:21:07,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:11,445 INFO L225 Difference]: With dead ends: 1192482 [2021-12-06 17:21:11,445 INFO L226 Difference]: Without dead ends: 772653 [2021-12-06 17:21:12,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:21:12,749 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 746 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:12,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1692 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:21:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772653 states. [2021-12-06 17:21:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772653 to 430556. [2021-12-06 17:21:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430556 states, 390581 states have (on average 1.53423489621871) internal successors, (599243), 392697 states have internal predecessors, (599243), 25099 states have call successors, (25099), 12711 states have call predecessors, (25099), 14874 states have return successors, (206551), 27197 states have call predecessors, (206551), 25098 states have call successors, (206551) [2021-12-06 17:21:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430556 states to 430556 states and 830893 transitions. [2021-12-06 17:21:50,659 INFO L78 Accepts]: Start accepts. Automaton has 430556 states and 830893 transitions. Word has length 112 [2021-12-06 17:21:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:50,660 INFO L470 AbstractCegarLoop]: Abstraction has 430556 states and 830893 transitions. [2021-12-06 17:21:50,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:21:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 430556 states and 830893 transitions. [2021-12-06 17:21:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:21:50,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:50,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:50,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 17:21:50,840 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:21:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1852440670, now seen corresponding path program 1 times [2021-12-06 17:21:50,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:21:50,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642891230] [2021-12-06 17:21:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:50,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:21:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:21:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:21:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:21:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:21:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:21:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:21:50,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:21:50,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642891230] [2021-12-06 17:21:50,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642891230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:50,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:50,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:21:50,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792194848] [2021-12-06 17:21:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:50,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:21:50,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:21:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:21:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:21:50,922 INFO L87 Difference]: Start difference. First operand 430556 states and 830893 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:34,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:34,913 INFO L93 Difference]: Finished difference Result 2442984 states and 4685221 transitions. [2021-12-06 17:24:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:24:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-06 17:24:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:47,542 INFO L225 Difference]: With dead ends: 2442984 [2021-12-06 17:24:47,542 INFO L226 Difference]: Without dead ends: 2017011 [2021-12-06 17:24:50,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:24:50,761 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 2582 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2618 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:50,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2618 Valid, 2021 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:24:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017011 states.