./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0 --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 ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:08:03,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:08:03,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:08:03,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:08:03,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:08:03,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:08:03,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:08:03,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:08:03,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:08:03,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:08:03,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:08:03,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:08:03,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:08:03,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:08:03,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:08:03,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:08:03,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:08:03,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:08:03,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:08:03,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:08:03,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:08:03,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:08:03,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:08:03,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:08:03,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:08:03,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:08:03,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:08:03,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:08:03,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:08:03,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:08:03,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:08:03,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:08:03,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:08:03,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:08:03,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:08:03,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:08:03,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:08:03,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:08:03,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:08:03,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:08:03,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:08:03,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:08:03,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:08:03,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:08:03,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:08:03,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:08:03,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:08:03,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:08:03,584 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:08:03,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:08:03,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:08:03,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:08:03,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:08:03,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:08:03,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:08:03,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:08:03,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:08:03,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:08:03,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:08:03,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:08:03,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:08:03,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:08:03,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:08:03,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:08:03,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:08:03,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:08:03,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:08:03,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:08:03,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:08:03,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:08:03,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:08:03,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:08:03,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:08:03,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:08:03,593 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_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2021-11-22 16:08:03,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:08:03,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:08:03,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:08:03,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:08:03,871 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:08:03,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2021-11-22 16:08:03,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/data/bf79841f6/59e6a204fa824f41b78065c8316bee30/FLAG91055894c [2021-11-22 16:08:04,483 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:08:04,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2021-11-22 16:08:04,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/data/bf79841f6/59e6a204fa824f41b78065c8316bee30/FLAG91055894c [2021-11-22 16:08:04,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/data/bf79841f6/59e6a204fa824f41b78065c8316bee30 [2021-11-22 16:08:04,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:08:04,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:08:04,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:08:04,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:08:04,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:08:04,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:08:04" (1/1) ... [2021-11-22 16:08:04,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a85256f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:04, skipping insertion in model container [2021-11-22 16:08:04,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:08:04" (1/1) ... [2021-11-22 16:08:04,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:08:04,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:08:05,082 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_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2021-11-22 16:08:05,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:08:05,281 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:08:05,293 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_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2021-11-22 16:08:05,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:08:05,363 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:08:05,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05 WrapperNode [2021-11-22 16:08:05,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:08:05,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:08:05,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:08:05,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:08:05,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,499 INFO L137 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 54, calls inlined = 183, statements flattened = 2915 [2021-11-22 16:08:05,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:08:05,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:08:05,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:08:05,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:08:05,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:08:05,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:08:05,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:08:05,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:08:05,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:08:05,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:05,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:08:05,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64593cad-bf0e-48fd-8cca-e57ba3aa0cf1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:08:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:08:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:08:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:08:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:08:05,808 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:08:05,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:08:07,635 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:08:07,654 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:08:07,654 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-22 16:08:07,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:08:07 BoogieIcfgContainer [2021-11-22 16:08:07,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:08:07,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:08:07,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:08:07,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:08:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:08:04" (1/3) ... [2021-11-22 16:08:07,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229a8106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:08:07, skipping insertion in model container [2021-11-22 16:08:07,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (2/3) ... [2021-11-22 16:08:07,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229a8106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:08:07, skipping insertion in model container [2021-11-22 16:08:07,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:08:07" (3/3) ... [2021-11-22 16:08:07,669 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2021-11-22 16:08:07,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:08:07,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 16:08:07,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:08:07,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 16:08:07,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 16:08:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 1185 states, 1182 states have (on average 1.5126903553299493) internal successors, (1788), 1184 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:07,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:07,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:07,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:07,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 472381951, now seen corresponding path program 1 times [2021-11-22 16:08:07,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:07,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341547132] [2021-11-22 16:08:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:07,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:08,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341547132] [2021-11-22 16:08:08,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341547132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:08,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:08,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:08,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300419227] [2021-11-22 16:08:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:08,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:08,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:08,180 INFO L87 Difference]: Start difference. First operand has 1185 states, 1182 states have (on average 1.5126903553299493) internal successors, (1788), 1184 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:08,478 INFO L93 Difference]: Finished difference Result 2362 states and 3566 transitions. [2021-11-22 16:08:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:08,509 INFO L225 Difference]: With dead ends: 2362 [2021-11-22 16:08:08,509 INFO L226 Difference]: Without dead ends: 1179 [2021-11-22 16:08:08,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:08,531 INFO L933 BasicCegarLoop]: 1758 mSDtfsCounter, 1754 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:08,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1754 Valid, 1758 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:08,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-22 16:08:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2021-11-22 16:08:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4910790144435004) internal successors, (1755), 1178 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1755 transitions. [2021-11-22 16:08:08,657 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1755 transitions. Word has length 131 [2021-11-22 16:08:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:08,658 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1755 transitions. [2021-11-22 16:08:08,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1755 transitions. [2021-11-22 16:08:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:08,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:08,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:08,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:08:08,680 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash 902040257, now seen corresponding path program 1 times [2021-11-22 16:08:08,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803928353] [2021-11-22 16:08:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:08,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:08,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803928353] [2021-11-22 16:08:08,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803928353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:08,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:08,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:08,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648414129] [2021-11-22 16:08:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:08,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:08,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:08,813 INFO L87 Difference]: Start difference. First operand 1179 states and 1755 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:08,913 INFO L93 Difference]: Finished difference Result 2344 states and 3487 transitions. [2021-11-22 16:08:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:08,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:08,921 INFO L225 Difference]: With dead ends: 2344 [2021-11-22 16:08:08,921 INFO L226 Difference]: Without dead ends: 1179 [2021-11-22 16:08:08,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:08,932 INFO L933 BasicCegarLoop]: 1753 mSDtfsCounter, 1741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:08,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 1753 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-22 16:08:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2021-11-22 16:08:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4902293967714528) internal successors, (1754), 1178 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1754 transitions. [2021-11-22 16:08:08,999 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1754 transitions. Word has length 131 [2021-11-22 16:08:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:09,000 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1754 transitions. [2021-11-22 16:08:09,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1754 transitions. [2021-11-22 16:08:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:09,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:09,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:08:09,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1550451325, now seen corresponding path program 1 times [2021-11-22 16:08:09,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:09,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301766274] [2021-11-22 16:08:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:09,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:09,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301766274] [2021-11-22 16:08:09,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301766274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:09,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:09,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:09,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746075674] [2021-11-22 16:08:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:09,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:09,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:09,103 INFO L87 Difference]: Start difference. First operand 1179 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:09,242 INFO L93 Difference]: Finished difference Result 3322 states and 4929 transitions. [2021-11-22 16:08:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:09,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:09,256 INFO L225 Difference]: With dead ends: 3322 [2021-11-22 16:08:09,256 INFO L226 Difference]: Without dead ends: 2159 [2021-11-22 16:08:09,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:09,266 INFO L933 BasicCegarLoop]: 1787 mSDtfsCounter, 1631 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:09,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 3329 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2021-11-22 16:08:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 2155. [2021-11-22 16:08:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4835113794705064) internal successors, (3194), 2154 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3194 transitions. [2021-11-22 16:08:09,395 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3194 transitions. Word has length 131 [2021-11-22 16:08:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:09,396 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3194 transitions. [2021-11-22 16:08:09,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3194 transitions. [2021-11-22 16:08:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:09,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:09,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:09,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:08:09,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1567867331, now seen corresponding path program 1 times [2021-11-22 16:08:09,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:09,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19892077] [2021-11-22 16:08:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:09,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:09,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19892077] [2021-11-22 16:08:09,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19892077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:09,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:09,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:09,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482898324] [2021-11-22 16:08:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:09,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:09,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:09,510 INFO L87 Difference]: Start difference. First operand 2155 states and 3194 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:09,710 INFO L93 Difference]: Finished difference Result 5272 states and 7804 transitions. [2021-11-22 16:08:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:09,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:09,729 INFO L225 Difference]: With dead ends: 5272 [2021-11-22 16:08:09,730 INFO L226 Difference]: Without dead ends: 3134 [2021-11-22 16:08:09,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:09,734 INFO L933 BasicCegarLoop]: 1827 mSDtfsCounter, 4684 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:09,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4684 Valid, 3400 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-11-22 16:08:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2155. [2021-11-22 16:08:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.482117974918718) internal successors, (3191), 2154 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3191 transitions. [2021-11-22 16:08:09,878 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3191 transitions. Word has length 131 [2021-11-22 16:08:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:09,878 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3191 transitions. [2021-11-22 16:08:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3191 transitions. [2021-11-22 16:08:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:09,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:09,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:09,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:08:09,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash -798167739, now seen corresponding path program 1 times [2021-11-22 16:08:09,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:09,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601435256] [2021-11-22 16:08:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:09,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:09,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601435256] [2021-11-22 16:08:09,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601435256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:09,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:09,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:09,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89211284] [2021-11-22 16:08:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:10,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:10,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:10,001 INFO L87 Difference]: Start difference. First operand 2155 states and 3191 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:10,241 INFO L93 Difference]: Finished difference Result 5270 states and 7794 transitions. [2021-11-22 16:08:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:10,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:10,260 INFO L225 Difference]: With dead ends: 5270 [2021-11-22 16:08:10,260 INFO L226 Difference]: Without dead ends: 3133 [2021-11-22 16:08:10,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:10,266 INFO L933 BasicCegarLoop]: 3171 mSDtfsCounter, 3328 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:10,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3328 Valid, 4741 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2021-11-22 16:08:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2155. [2021-11-22 16:08:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4807245703669298) internal successors, (3188), 2154 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3188 transitions. [2021-11-22 16:08:10,431 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3188 transitions. Word has length 131 [2021-11-22 16:08:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:10,431 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3188 transitions. [2021-11-22 16:08:10,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3188 transitions. [2021-11-22 16:08:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:10,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:10,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:10,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:08:10,439 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1203718531, now seen corresponding path program 1 times [2021-11-22 16:08:10,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950943947] [2021-11-22 16:08:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:10,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:10,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950943947] [2021-11-22 16:08:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950943947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:10,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:10,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:10,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635131311] [2021-11-22 16:08:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:10,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:10,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:10,531 INFO L87 Difference]: Start difference. First operand 2155 states and 3188 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:10,835 INFO L93 Difference]: Finished difference Result 5268 states and 7784 transitions. [2021-11-22 16:08:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:10,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:10,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:10,854 INFO L225 Difference]: With dead ends: 5268 [2021-11-22 16:08:10,854 INFO L226 Difference]: Without dead ends: 3132 [2021-11-22 16:08:10,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:10,860 INFO L933 BasicCegarLoop]: 3166 mSDtfsCounter, 3323 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 4733 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:10,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 4733 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2021-11-22 16:08:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 2155. [2021-11-22 16:08:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4793311658151416) internal successors, (3185), 2154 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3185 transitions. [2021-11-22 16:08:11,023 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3185 transitions. Word has length 131 [2021-11-22 16:08:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:11,023 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3185 transitions. [2021-11-22 16:08:11,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3185 transitions. [2021-11-22 16:08:11,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:11,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:11,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:11,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:08:11,026 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1364103803, now seen corresponding path program 1 times [2021-11-22 16:08:11,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:11,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003727943] [2021-11-22 16:08:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:11,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:11,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:11,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003727943] [2021-11-22 16:08:11,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003727943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:11,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:11,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:11,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823846347] [2021-11-22 16:08:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:11,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:11,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:11,088 INFO L87 Difference]: Start difference. First operand 2155 states and 3185 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:11,388 INFO L93 Difference]: Finished difference Result 5264 states and 7770 transitions. [2021-11-22 16:08:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:11,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:11,406 INFO L225 Difference]: With dead ends: 5264 [2021-11-22 16:08:11,407 INFO L226 Difference]: Without dead ends: 3130 [2021-11-22 16:08:11,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:11,411 INFO L933 BasicCegarLoop]: 3159 mSDtfsCounter, 3317 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 4721 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:11,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3317 Valid, 4721 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2021-11-22 16:08:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2155. [2021-11-22 16:08:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4779377612633535) internal successors, (3182), 2154 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3182 transitions. [2021-11-22 16:08:11,565 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3182 transitions. Word has length 131 [2021-11-22 16:08:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:11,566 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3182 transitions. [2021-11-22 16:08:11,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3182 transitions. [2021-11-22 16:08:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:11,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:11,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:11,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:08:11,569 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1283500551, now seen corresponding path program 1 times [2021-11-22 16:08:11,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:11,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051395443] [2021-11-22 16:08:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:11,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:11,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:11,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051395443] [2021-11-22 16:08:11,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051395443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:11,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:11,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:11,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431957978] [2021-11-22 16:08:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:11,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:11,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:11,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:11,619 INFO L87 Difference]: Start difference. First operand 2155 states and 3182 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:11,901 INFO L93 Difference]: Finished difference Result 5262 states and 7760 transitions. [2021-11-22 16:08:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:11,920 INFO L225 Difference]: With dead ends: 5262 [2021-11-22 16:08:11,921 INFO L226 Difference]: Without dead ends: 3129 [2021-11-22 16:08:11,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:11,926 INFO L933 BasicCegarLoop]: 3154 mSDtfsCounter, 3312 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 4713 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:11,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3312 Valid, 4713 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-11-22 16:08:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2155. [2021-11-22 16:08:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4765443567115653) internal successors, (3179), 2154 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3179 transitions. [2021-11-22 16:08:12,102 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3179 transitions. Word has length 131 [2021-11-22 16:08:12,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:12,103 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3179 transitions. [2021-11-22 16:08:12,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3179 transitions. [2021-11-22 16:08:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:12,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:12,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:12,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:08:12,106 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash -847850171, now seen corresponding path program 1 times [2021-11-22 16:08:12,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:12,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038145648] [2021-11-22 16:08:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:12,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:12,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:12,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038145648] [2021-11-22 16:08:12,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038145648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:12,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:12,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:12,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601190247] [2021-11-22 16:08:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:12,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:12,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:12,146 INFO L87 Difference]: Start difference. First operand 2155 states and 3179 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:12,445 INFO L93 Difference]: Finished difference Result 5260 states and 7750 transitions. [2021-11-22 16:08:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:12,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:12,463 INFO L225 Difference]: With dead ends: 5260 [2021-11-22 16:08:12,463 INFO L226 Difference]: Without dead ends: 3128 [2021-11-22 16:08:12,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:12,469 INFO L933 BasicCegarLoop]: 3149 mSDtfsCounter, 3307 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 4705 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:12,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3307 Valid, 4705 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2021-11-22 16:08:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 2155. [2021-11-22 16:08:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.475150952159777) internal successors, (3176), 2154 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3176 transitions. [2021-11-22 16:08:12,646 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3176 transitions. Word has length 131 [2021-11-22 16:08:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:12,649 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3176 transitions. [2021-11-22 16:08:12,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3176 transitions. [2021-11-22 16:08:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:12,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:12,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:12,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:08:12,651 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1886434745, now seen corresponding path program 1 times [2021-11-22 16:08:12,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:12,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021287398] [2021-11-22 16:08:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:12,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:12,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:12,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021287398] [2021-11-22 16:08:12,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021287398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:12,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:12,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:12,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622800971] [2021-11-22 16:08:12,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:12,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:12,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:12,710 INFO L87 Difference]: Start difference. First operand 2155 states and 3176 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:13,029 INFO L93 Difference]: Finished difference Result 5258 states and 7740 transitions. [2021-11-22 16:08:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:13,056 INFO L225 Difference]: With dead ends: 5258 [2021-11-22 16:08:13,062 INFO L226 Difference]: Without dead ends: 3127 [2021-11-22 16:08:13,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:13,067 INFO L933 BasicCegarLoop]: 3144 mSDtfsCounter, 3302 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:13,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3302 Valid, 4697 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-11-22 16:08:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2155. [2021-11-22 16:08:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.473757547607989) internal successors, (3173), 2154 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3173 transitions. [2021-11-22 16:08:13,244 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3173 transitions. Word has length 131 [2021-11-22 16:08:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:13,245 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3173 transitions. [2021-11-22 16:08:13,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3173 transitions. [2021-11-22 16:08:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:13,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:13,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:13,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:08:13,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash 435367173, now seen corresponding path program 1 times [2021-11-22 16:08:13,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:13,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200891474] [2021-11-22 16:08:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:13,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:13,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200891474] [2021-11-22 16:08:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200891474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:13,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:13,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784262519] [2021-11-22 16:08:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:13,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:13,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:13,295 INFO L87 Difference]: Start difference. First operand 2155 states and 3173 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:13,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:13,568 INFO L93 Difference]: Finished difference Result 5256 states and 7730 transitions. [2021-11-22 16:08:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:13,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:13,577 INFO L225 Difference]: With dead ends: 5256 [2021-11-22 16:08:13,577 INFO L226 Difference]: Without dead ends: 3126 [2021-11-22 16:08:13,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:13,582 INFO L933 BasicCegarLoop]: 1797 mSDtfsCounter, 4641 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:13,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 3347 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-11-22 16:08:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2155. [2021-11-22 16:08:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4723641430562007) internal successors, (3170), 2154 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3170 transitions. [2021-11-22 16:08:13,777 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3170 transitions. Word has length 131 [2021-11-22 16:08:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:13,777 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3170 transitions. [2021-11-22 16:08:13,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3170 transitions. [2021-11-22 16:08:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:13,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:13,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:13,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:08:13,779 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1706493305, now seen corresponding path program 1 times [2021-11-22 16:08:13,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:13,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152527344] [2021-11-22 16:08:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:13,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:13,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152527344] [2021-11-22 16:08:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152527344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:13,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:13,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:13,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038374011] [2021-11-22 16:08:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:13,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:13,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:13,818 INFO L87 Difference]: Start difference. First operand 2155 states and 3170 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:14,136 INFO L93 Difference]: Finished difference Result 5183 states and 7619 transitions. [2021-11-22 16:08:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:14,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:14,143 INFO L225 Difference]: With dead ends: 5183 [2021-11-22 16:08:14,143 INFO L226 Difference]: Without dead ends: 3054 [2021-11-22 16:08:14,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:14,148 INFO L933 BasicCegarLoop]: 2987 mSDtfsCounter, 3188 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:14,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3188 Valid, 4508 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-11-22 16:08:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2155. [2021-11-22 16:08:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4709707385044124) internal successors, (3167), 2154 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3167 transitions. [2021-11-22 16:08:14,319 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3167 transitions. Word has length 131 [2021-11-22 16:08:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:14,319 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3167 transitions. [2021-11-22 16:08:14,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:14,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3167 transitions. [2021-11-22 16:08:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:14,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:14,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:14,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:08:14,322 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1965192389, now seen corresponding path program 1 times [2021-11-22 16:08:14,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175387846] [2021-11-22 16:08:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:14,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:14,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:14,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175387846] [2021-11-22 16:08:14,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175387846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:14,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:14,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:14,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487950807] [2021-11-22 16:08:14,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:14,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:14,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:14,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:14,360 INFO L87 Difference]: Start difference. First operand 2155 states and 3167 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:14,662 INFO L93 Difference]: Finished difference Result 5180 states and 7608 transitions. [2021-11-22 16:08:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:14,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:14,669 INFO L225 Difference]: With dead ends: 5180 [2021-11-22 16:08:14,669 INFO L226 Difference]: Without dead ends: 3052 [2021-11-22 16:08:14,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:14,674 INFO L933 BasicCegarLoop]: 2981 mSDtfsCounter, 3182 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:14,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3182 Valid, 4499 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-11-22 16:08:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2155. [2021-11-22 16:08:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4695773339526244) internal successors, (3164), 2154 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3164 transitions. [2021-11-22 16:08:14,850 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3164 transitions. Word has length 131 [2021-11-22 16:08:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:14,851 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3164 transitions. [2021-11-22 16:08:14,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3164 transitions. [2021-11-22 16:08:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:14,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:14,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:14,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:08:14,853 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2083633863, now seen corresponding path program 1 times [2021-11-22 16:08:14,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160964123] [2021-11-22 16:08:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:14,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:14,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:14,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160964123] [2021-11-22 16:08:14,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160964123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:14,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:14,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:14,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343384261] [2021-11-22 16:08:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:14,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:14,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:14,892 INFO L87 Difference]: Start difference. First operand 2155 states and 3164 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:15,205 INFO L93 Difference]: Finished difference Result 5177 states and 7595 transitions. [2021-11-22 16:08:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:15,212 INFO L225 Difference]: With dead ends: 5177 [2021-11-22 16:08:15,212 INFO L226 Difference]: Without dead ends: 3051 [2021-11-22 16:08:15,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:15,217 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 3177 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:15,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3177 Valid, 4488 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-11-22 16:08:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2155. [2021-11-22 16:08:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.468183929400836) internal successors, (3161), 2154 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3161 transitions. [2021-11-22 16:08:15,428 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3161 transitions. Word has length 131 [2021-11-22 16:08:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:15,429 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3161 transitions. [2021-11-22 16:08:15,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3161 transitions. [2021-11-22 16:08:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:15,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:15,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:08:15,432 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:15,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:15,432 INFO L85 PathProgramCache]: Analyzing trace with hash 50239817, now seen corresponding path program 1 times [2021-11-22 16:08:15,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:15,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982520496] [2021-11-22 16:08:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:15,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:15,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982520496] [2021-11-22 16:08:15,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982520496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:15,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:15,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:15,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887295841] [2021-11-22 16:08:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:15,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:15,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:15,488 INFO L87 Difference]: Start difference. First operand 2155 states and 3161 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:15,862 INFO L93 Difference]: Finished difference Result 5175 states and 7585 transitions. [2021-11-22 16:08:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:15,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:15,869 INFO L225 Difference]: With dead ends: 5175 [2021-11-22 16:08:15,870 INFO L226 Difference]: Without dead ends: 3050 [2021-11-22 16:08:15,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:15,876 INFO L933 BasicCegarLoop]: 2970 mSDtfsCounter, 3172 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3172 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:15,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3172 Valid, 4480 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2021-11-22 16:08:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2155. [2021-11-22 16:08:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4667905248490478) internal successors, (3158), 2154 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3158 transitions. [2021-11-22 16:08:16,040 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3158 transitions. Word has length 131 [2021-11-22 16:08:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:16,040 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3158 transitions. [2021-11-22 16:08:16,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3158 transitions. [2021-11-22 16:08:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:16,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:16,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:16,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:08:16,043 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1816468857, now seen corresponding path program 1 times [2021-11-22 16:08:16,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195331361] [2021-11-22 16:08:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:16,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:16,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:16,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195331361] [2021-11-22 16:08:16,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195331361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:16,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:16,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:16,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217176017] [2021-11-22 16:08:16,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:16,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:16,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:16,094 INFO L87 Difference]: Start difference. First operand 2155 states and 3158 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:16,436 INFO L93 Difference]: Finished difference Result 5173 states and 7575 transitions. [2021-11-22 16:08:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:16,442 INFO L225 Difference]: With dead ends: 5173 [2021-11-22 16:08:16,442 INFO L226 Difference]: Without dead ends: 3049 [2021-11-22 16:08:16,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:16,447 INFO L933 BasicCegarLoop]: 2965 mSDtfsCounter, 3167 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3167 SdHoareTripleChecker+Valid, 4472 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:16,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3167 Valid, 4472 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-11-22 16:08:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2155. [2021-11-22 16:08:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4653971202972595) internal successors, (3155), 2154 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3155 transitions. [2021-11-22 16:08:16,624 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3155 transitions. Word has length 131 [2021-11-22 16:08:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:16,624 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3155 transitions. [2021-11-22 16:08:16,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3155 transitions. [2021-11-22 16:08:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:16,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:16,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:16,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 16:08:16,627 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1171356041, now seen corresponding path program 1 times [2021-11-22 16:08:16,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:16,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062142508] [2021-11-22 16:08:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:16,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:16,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:16,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062142508] [2021-11-22 16:08:16,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062142508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:16,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:16,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:16,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100342851] [2021-11-22 16:08:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:16,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:16,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:16,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:16,674 INFO L87 Difference]: Start difference. First operand 2155 states and 3155 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:17,035 INFO L93 Difference]: Finished difference Result 5171 states and 7565 transitions. [2021-11-22 16:08:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:17,041 INFO L225 Difference]: With dead ends: 5171 [2021-11-22 16:08:17,041 INFO L226 Difference]: Without dead ends: 3048 [2021-11-22 16:08:17,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:17,046 INFO L933 BasicCegarLoop]: 2960 mSDtfsCounter, 3162 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3162 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:17,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3162 Valid, 4464 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2021-11-22 16:08:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 2155. [2021-11-22 16:08:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4640037157454715) internal successors, (3152), 2154 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3152 transitions. [2021-11-22 16:08:17,216 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3152 transitions. Word has length 131 [2021-11-22 16:08:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:17,216 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3152 transitions. [2021-11-22 16:08:17,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3152 transitions. [2021-11-22 16:08:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:17,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:17,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:17,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 16:08:17,219 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1226114489, now seen corresponding path program 1 times [2021-11-22 16:08:17,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:17,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990712165] [2021-11-22 16:08:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:17,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:17,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:17,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990712165] [2021-11-22 16:08:17,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990712165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:17,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:17,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:17,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120769112] [2021-11-22 16:08:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:17,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:17,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:17,274 INFO L87 Difference]: Start difference. First operand 2155 states and 3152 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:17,621 INFO L93 Difference]: Finished difference Result 5169 states and 7555 transitions. [2021-11-22 16:08:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:17,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:17,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:17,629 INFO L225 Difference]: With dead ends: 5169 [2021-11-22 16:08:17,629 INFO L226 Difference]: Without dead ends: 3047 [2021-11-22 16:08:17,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:17,635 INFO L933 BasicCegarLoop]: 1741 mSDtfsCounter, 4392 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:17,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4392 Valid, 3242 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3047 states. [2021-11-22 16:08:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3047 to 2155. [2021-11-22 16:08:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.4626103111936832) internal successors, (3149), 2154 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3149 transitions. [2021-11-22 16:08:17,850 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3149 transitions. Word has length 131 [2021-11-22 16:08:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:17,851 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3149 transitions. [2021-11-22 16:08:17,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3149 transitions. [2021-11-22 16:08:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:17,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:17,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:17,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 16:08:17,854 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash -195073591, now seen corresponding path program 1 times [2021-11-22 16:08:17,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:17,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980865055] [2021-11-22 16:08:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:17,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:17,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980865055] [2021-11-22 16:08:17,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980865055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:17,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:17,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:17,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311387725] [2021-11-22 16:08:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:17,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:17,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:17,909 INFO L87 Difference]: Start difference. First operand 2155 states and 3149 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:18,285 INFO L93 Difference]: Finished difference Result 5167 states and 7545 transitions. [2021-11-22 16:08:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:18,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:18,292 INFO L225 Difference]: With dead ends: 5167 [2021-11-22 16:08:18,292 INFO L226 Difference]: Without dead ends: 3046 [2021-11-22 16:08:18,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:18,297 INFO L933 BasicCegarLoop]: 2950 mSDtfsCounter, 3152 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3152 SdHoareTripleChecker+Valid, 4448 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:18,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3152 Valid, 4448 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-11-22 16:08:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2155. [2021-11-22 16:08:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.461216906641895) internal successors, (3146), 2154 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3146 transitions. [2021-11-22 16:08:18,542 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3146 transitions. Word has length 131 [2021-11-22 16:08:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:18,542 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3146 transitions. [2021-11-22 16:08:18,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3146 transitions. [2021-11-22 16:08:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:18,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:18,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:18,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 16:08:18,546 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2101476857, now seen corresponding path program 1 times [2021-11-22 16:08:18,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298321336] [2021-11-22 16:08:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:18,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:18,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:18,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298321336] [2021-11-22 16:08:18,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298321336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:18,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:18,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:18,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089912660] [2021-11-22 16:08:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:18,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:18,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:18,600 INFO L87 Difference]: Start difference. First operand 2155 states and 3146 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:19,057 INFO L93 Difference]: Finished difference Result 5165 states and 7535 transitions. [2021-11-22 16:08:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:19,064 INFO L225 Difference]: With dead ends: 5165 [2021-11-22 16:08:19,064 INFO L226 Difference]: Without dead ends: 3045 [2021-11-22 16:08:19,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:19,070 INFO L933 BasicCegarLoop]: 2945 mSDtfsCounter, 3147 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 4440 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:19,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 4440 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-11-22 16:08:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2155. [2021-11-22 16:08:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2153 states have (on average 1.459823502090107) internal successors, (3143), 2154 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3143 transitions. [2021-11-22 16:08:19,268 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3143 transitions. Word has length 131 [2021-11-22 16:08:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:19,269 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 3143 transitions. [2021-11-22 16:08:19,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3143 transitions. [2021-11-22 16:08:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 16:08:19,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:19,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:19,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 16:08:19,271 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash -500405751, now seen corresponding path program 1 times [2021-11-22 16:08:19,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:19,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223747644] [2021-11-22 16:08:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:19,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:19,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223747644] [2021-11-22 16:08:19,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223747644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:19,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:19,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:19,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039675872] [2021-11-22 16:08:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:19,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:19,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:19,311 INFO L87 Difference]: Start difference. First operand 2155 states and 3143 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:19,733 INFO L93 Difference]: Finished difference Result 6257 states and 9115 transitions. [2021-11-22 16:08:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:19,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-22 16:08:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:19,742 INFO L225 Difference]: With dead ends: 6257 [2021-11-22 16:08:19,742 INFO L226 Difference]: Without dead ends: 4139 [2021-11-22 16:08:19,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:19,747 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 1624 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:19,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 3204 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-11-22 16:08:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4001. [2021-11-22 16:08:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3999 states have (on average 1.4503625906476618) internal successors, (5800), 4000 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5800 transitions. [2021-11-22 16:08:20,103 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5800 transitions. Word has length 131 [2021-11-22 16:08:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:20,103 INFO L470 AbstractCegarLoop]: Abstraction has 4001 states and 5800 transitions. [2021-11-22 16:08:20,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5800 transitions. [2021-11-22 16:08:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:20,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:20,110 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:20,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 16:08:20,110 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:20,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1904538244, now seen corresponding path program 1 times [2021-11-22 16:08:20,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:20,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448895124] [2021-11-22 16:08:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:20,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:20,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:20,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448895124] [2021-11-22 16:08:20,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448895124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:20,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:20,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:08:20,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71061821] [2021-11-22 16:08:20,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:20,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:08:20,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:08:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:20,187 INFO L87 Difference]: Start difference. First operand 4001 states and 5800 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:21,161 INFO L93 Difference]: Finished difference Result 11818 states and 17148 transitions. [2021-11-22 16:08:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:08:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:21,179 INFO L225 Difference]: With dead ends: 11818 [2021-11-22 16:08:21,180 INFO L226 Difference]: Without dead ends: 7858 [2021-11-22 16:08:21,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:08:21,190 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 6119 mSDsluCounter, 6560 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6119 SdHoareTripleChecker+Valid, 8235 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:21,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6119 Valid, 8235 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2021-11-22 16:08:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 4070. [2021-11-22 16:08:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4070 states, 4068 states have (on average 1.4373156342182891) internal successors, (5847), 4069 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 5847 transitions. [2021-11-22 16:08:21,738 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 5847 transitions. Word has length 213 [2021-11-22 16:08:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:21,739 INFO L470 AbstractCegarLoop]: Abstraction has 4070 states and 5847 transitions. [2021-11-22 16:08:21,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 5847 transitions. [2021-11-22 16:08:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:21,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:21,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:21,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 16:08:21,747 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1863035002, now seen corresponding path program 1 times [2021-11-22 16:08:21,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:21,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596533527] [2021-11-22 16:08:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:21,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:21,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596533527] [2021-11-22 16:08:21,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596533527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:21,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:21,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:21,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071268739] [2021-11-22 16:08:21,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:21,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:21,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:21,813 INFO L87 Difference]: Start difference. First operand 4070 states and 5847 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:23,113 INFO L93 Difference]: Finished difference Result 13772 states and 19752 transitions. [2021-11-22 16:08:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:23,140 INFO L225 Difference]: With dead ends: 13772 [2021-11-22 16:08:23,141 INFO L226 Difference]: Without dead ends: 9745 [2021-11-22 16:08:23,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:23,150 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 4446 mSDsluCounter, 3800 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:23,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 5569 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2021-11-22 16:08:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 7665. [2021-11-22 16:08:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7665 states, 7663 states have (on average 1.4309017356126843) internal successors, (10965), 7664 states have internal predecessors, (10965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7665 states to 7665 states and 10965 transitions. [2021-11-22 16:08:23,927 INFO L78 Accepts]: Start accepts. Automaton has 7665 states and 10965 transitions. Word has length 213 [2021-11-22 16:08:23,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:23,927 INFO L470 AbstractCegarLoop]: Abstraction has 7665 states and 10965 transitions. [2021-11-22 16:08:23,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7665 states and 10965 transitions. [2021-11-22 16:08:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:23,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:23,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:23,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 16:08:23,936 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash 497881928, now seen corresponding path program 1 times [2021-11-22 16:08:23,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:23,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013930649] [2021-11-22 16:08:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:23,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:23,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:23,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013930649] [2021-11-22 16:08:23,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013930649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:23,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:23,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:08:23,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119618858] [2021-11-22 16:08:23,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:23,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:08:23,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:08:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:23,987 INFO L87 Difference]: Start difference. First operand 7665 states and 10965 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:25,420 INFO L93 Difference]: Finished difference Result 22417 states and 32159 transitions. [2021-11-22 16:08:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:08:25,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:25,448 INFO L225 Difference]: With dead ends: 22417 [2021-11-22 16:08:25,448 INFO L226 Difference]: Without dead ends: 14799 [2021-11-22 16:08:25,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:08:25,463 INFO L933 BasicCegarLoop]: 1838 mSDtfsCounter, 5766 mSDsluCounter, 6973 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5766 SdHoareTripleChecker+Valid, 8811 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:25,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5766 Valid, 8811 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14799 states. [2021-11-22 16:08:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14799 to 7797. [2021-11-22 16:08:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7797 states, 7795 states have (on average 1.4183450930083388) internal successors, (11056), 7796 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 11056 transitions. [2021-11-22 16:08:26,164 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 11056 transitions. Word has length 213 [2021-11-22 16:08:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:26,165 INFO L470 AbstractCegarLoop]: Abstraction has 7797 states and 11056 transitions. [2021-11-22 16:08:26,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 11056 transitions. [2021-11-22 16:08:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:26,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:26,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:26,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 16:08:26,172 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1474080716, now seen corresponding path program 1 times [2021-11-22 16:08:26,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:26,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817496419] [2021-11-22 16:08:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:26,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:26,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:26,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817496419] [2021-11-22 16:08:26,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817496419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:26,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:26,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:26,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380595595] [2021-11-22 16:08:26,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:26,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:26,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:26,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:26,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:26,219 INFO L87 Difference]: Start difference. First operand 7797 states and 11056 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:27,917 INFO L93 Difference]: Finished difference Result 26455 states and 37455 transitions. [2021-11-22 16:08:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:27,950 INFO L225 Difference]: With dead ends: 26455 [2021-11-22 16:08:27,950 INFO L226 Difference]: Without dead ends: 18714 [2021-11-22 16:08:27,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:27,965 INFO L933 BasicCegarLoop]: 1745 mSDtfsCounter, 4406 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 5777 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:27,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4406 Valid, 5777 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18714 states. [2021-11-22 16:08:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18714 to 14772. [2021-11-22 16:08:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14772 states, 14770 states have (on average 1.412389979688558) internal successors, (20861), 14771 states have internal predecessors, (20861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14772 states to 14772 states and 20861 transitions. [2021-11-22 16:08:29,682 INFO L78 Accepts]: Start accepts. Automaton has 14772 states and 20861 transitions. Word has length 213 [2021-11-22 16:08:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:29,683 INFO L470 AbstractCegarLoop]: Abstraction has 14772 states and 20861 transitions. [2021-11-22 16:08:29,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 14772 states and 20861 transitions. [2021-11-22 16:08:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:29,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:29,695 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:29,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 16:08:29,696 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -250642802, now seen corresponding path program 1 times [2021-11-22 16:08:29,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:29,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21010984] [2021-11-22 16:08:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:29,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:29,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:29,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21010984] [2021-11-22 16:08:29,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21010984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:29,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:29,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:08:29,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014033439] [2021-11-22 16:08:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:29,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:08:29,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:29,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:08:29,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:29,756 INFO L87 Difference]: Start difference. First operand 14772 states and 20861 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:32,184 INFO L93 Difference]: Finished difference Result 42120 states and 59760 transitions. [2021-11-22 16:08:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:08:32,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:32,232 INFO L225 Difference]: With dead ends: 42120 [2021-11-22 16:08:32,232 INFO L226 Difference]: Without dead ends: 27408 [2021-11-22 16:08:32,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:08:32,251 INFO L933 BasicCegarLoop]: 1794 mSDtfsCounter, 5246 mSDsluCounter, 6787 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5246 SdHoareTripleChecker+Valid, 8581 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:32,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5246 Valid, 8581 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2021-11-22 16:08:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 15024. [2021-11-22 16:08:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15024 states, 15022 states have (on average 1.4003461589668487) internal successors, (21036), 15023 states have internal predecessors, (21036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15024 states to 15024 states and 21036 transitions. [2021-11-22 16:08:33,957 INFO L78 Accepts]: Start accepts. Automaton has 15024 states and 21036 transitions. Word has length 213 [2021-11-22 16:08:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:33,958 INFO L470 AbstractCegarLoop]: Abstraction has 15024 states and 21036 transitions. [2021-11-22 16:08:33,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 15024 states and 21036 transitions. [2021-11-22 16:08:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:33,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:33,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:33,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 16:08:33,972 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash -58539758, now seen corresponding path program 1 times [2021-11-22 16:08:33,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:33,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793481426] [2021-11-22 16:08:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:33,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:34,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:34,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793481426] [2021-11-22 16:08:34,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793481426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:34,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:34,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:08:34,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301099198] [2021-11-22 16:08:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:34,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:08:34,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:08:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:34,037 INFO L87 Difference]: Start difference. First operand 15024 states and 21036 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:38,209 INFO L93 Difference]: Finished difference Result 53442 states and 75407 transitions. [2021-11-22 16:08:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:08:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:38,253 INFO L225 Difference]: With dead ends: 53442 [2021-11-22 16:08:38,253 INFO L226 Difference]: Without dead ends: 38485 [2021-11-22 16:08:38,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:08:38,266 INFO L933 BasicCegarLoop]: 2510 mSDtfsCounter, 4732 mSDsluCounter, 6869 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4732 SdHoareTripleChecker+Valid, 9379 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:38,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4732 Valid, 9379 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38485 states. [2021-11-22 16:08:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38485 to 15507. [2021-11-22 16:08:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15507 states, 15505 states have (on average 1.3878748790712674) internal successors, (21519), 15506 states have internal predecessors, (21519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15507 states to 15507 states and 21519 transitions. [2021-11-22 16:08:40,057 INFO L78 Accepts]: Start accepts. Automaton has 15507 states and 21519 transitions. Word has length 213 [2021-11-22 16:08:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:40,058 INFO L470 AbstractCegarLoop]: Abstraction has 15507 states and 21519 transitions. [2021-11-22 16:08:40,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 15507 states and 21519 transitions. [2021-11-22 16:08:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:40,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:40,069 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:40,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 16:08:40,070 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1714108054, now seen corresponding path program 1 times [2021-11-22 16:08:40,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:40,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094067301] [2021-11-22 16:08:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:40,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:40,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094067301] [2021-11-22 16:08:40,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094067301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:40,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:40,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:40,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197042036] [2021-11-22 16:08:40,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:40,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:40,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:40,130 INFO L87 Difference]: Start difference. First operand 15507 states and 21519 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:43,026 INFO L93 Difference]: Finished difference Result 44913 states and 62329 transitions. [2021-11-22 16:08:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:43,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:43,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:43,064 INFO L225 Difference]: With dead ends: 44913 [2021-11-22 16:08:43,064 INFO L226 Difference]: Without dead ends: 29478 [2021-11-22 16:08:43,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:43,082 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1499 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:43,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 3191 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29478 states. [2021-11-22 16:08:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29478 to 29442. [2021-11-22 16:08:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29442 states, 29440 states have (on average 1.382608695652174) internal successors, (40704), 29441 states have internal predecessors, (40704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29442 states to 29442 states and 40704 transitions. [2021-11-22 16:08:46,868 INFO L78 Accepts]: Start accepts. Automaton has 29442 states and 40704 transitions. Word has length 213 [2021-11-22 16:08:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 29442 states and 40704 transitions. [2021-11-22 16:08:46,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 29442 states and 40704 transitions. [2021-11-22 16:08:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:46,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:46,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:46,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 16:08:46,888 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -65234856, now seen corresponding path program 1 times [2021-11-22 16:08:46,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:46,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985077676] [2021-11-22 16:08:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:46,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:46,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985077676] [2021-11-22 16:08:46,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985077676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:46,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:08:46,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774110714] [2021-11-22 16:08:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:46,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:08:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:08:46,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:46,951 INFO L87 Difference]: Start difference. First operand 29442 states and 40704 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:52,642 INFO L93 Difference]: Finished difference Result 81512 states and 113427 transitions. [2021-11-22 16:08:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:08:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-22 16:08:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:52,727 INFO L225 Difference]: With dead ends: 81512 [2021-11-22 16:08:52,727 INFO L226 Difference]: Without dead ends: 52146 [2021-11-22 16:08:52,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:08:52,758 INFO L933 BasicCegarLoop]: 1750 mSDtfsCounter, 4726 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 7831 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:52,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4726 Valid, 7831 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:52,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52146 states. [2021-11-22 16:08:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52146 to 29922. [2021-11-22 16:08:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29922 states, 29920 states have (on average 1.371624331550802) internal successors, (41039), 29921 states have internal predecessors, (41039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29922 states to 29922 states and 41039 transitions. [2021-11-22 16:08:56,444 INFO L78 Accepts]: Start accepts. Automaton has 29922 states and 41039 transitions. Word has length 213 [2021-11-22 16:08:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:56,444 INFO L470 AbstractCegarLoop]: Abstraction has 29922 states and 41039 transitions. [2021-11-22 16:08:56,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:08:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 29922 states and 41039 transitions. [2021-11-22 16:08:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 16:08:56,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:56,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:56,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 16:08:56,467 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:08:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash 345800924, now seen corresponding path program 1 times [2021-11-22 16:08:56,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:56,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302256871] [2021-11-22 16:08:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:56,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:08:56,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:56,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302256871] [2021-11-22 16:08:56,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302256871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:56,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:56,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:08:56,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672691420] [2021-11-22 16:08:56,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:56,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:08:56,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:08:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:08:56,539 INFO L87 Difference]: Start difference. First operand 29922 states and 41039 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)