./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G --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 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:41:10,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:41:10,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:41:10,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:41:10,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:41:10,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:41:10,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:41:10,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:41:10,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:41:10,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:41:10,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:41:10,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:41:10,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:41:10,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:41:10,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:41:10,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:41:10,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:41:10,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:41:10,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:41:10,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:41:10,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:41:10,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:41:10,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:41:10,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:41:10,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:41:10,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:41:10,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:41:10,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:41:10,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:41:10,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:41:10,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:41:10,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:41:10,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:41:10,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:41:10,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:41:10,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:41:10,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:41:10,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:41:10,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:41:10,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:41:10,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:41:10,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:41:10,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:41:10,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:41:10,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:41:10,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:41:10,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:41:10,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:41:10,596 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:41:10,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:41:10,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:41:10,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:41:10,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:41:10,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:41:10,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:41:10,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:41:10,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:41:10,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:41:10,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:41:10,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:41:10,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:41:10,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:41:10,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:41:10,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:41:10,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:41:10,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:41:10,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:41:10,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:41:10,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:41:10,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:41:10,603 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:41:10,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:41:10,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:41:10,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:41:10,605 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_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 [2021-11-23 13:41:10,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:41:10,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:41:10,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:41:10,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:41:10,946 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:41:10,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2021-11-23 13:41:11,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/data/3fa8c51fb/5625774f4bce4088ad17a64d409616c7/FLAG0fc85bcf3 [2021-11-23 13:41:12,013 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:41:12,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2021-11-23 13:41:12,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/data/3fa8c51fb/5625774f4bce4088ad17a64d409616c7/FLAG0fc85bcf3 [2021-11-23 13:41:12,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/data/3fa8c51fb/5625774f4bce4088ad17a64d409616c7 [2021-11-23 13:41:12,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:41:12,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:41:12,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:41:12,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:41:12,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:41:12,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:12" (1/1) ... [2021-11-23 13:41:12,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f87aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:12, skipping insertion in model container [2021-11-23 13:41:12,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:12" (1/1) ... [2021-11-23 13:41:12,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:41:12,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:41:15,224 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_290a3eee-8ba3-43da-999c-7a4456e3bab5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[381679,381692] [2021-11-23 13:41:15,254 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_290a3eee-8ba3-43da-999c-7a4456e3bab5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[383339,383352] [2021-11-23 13:41:15,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:41:15,534 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:41:16,782 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_290a3eee-8ba3-43da-999c-7a4456e3bab5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[381679,381692] [2021-11-23 13:41:16,787 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_290a3eee-8ba3-43da-999c-7a4456e3bab5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c[383339,383352] [2021-11-23 13:41:16,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:41:16,883 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:41:16,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16 WrapperNode [2021-11-23 13:41:16,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:41:16,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:41:16,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:41:16,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:41:16,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:16,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,501 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 51, calls inlined = 104, statements flattened = 13752 [2021-11-23 13:41:17,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:41:17,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:41:17,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:41:17,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:41:17,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:17,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:18,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:41:18,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:41:18,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:41:18,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:41:18,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (1/1) ... [2021-11-23 13:41:18,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:41:18,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:41:18,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:41:18,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290a3eee-8ba3-43da-999c-7a4456e3bab5/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:41:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:41:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:41:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:41:18,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:41:18,465 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:41:18,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:41:26,062 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:41:26,104 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:41:26,104 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 13:41:26,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:26 BoogieIcfgContainer [2021-11-23 13:41:26,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:41:26,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:41:26,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:41:26,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:41:26,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:41:12" (1/3) ... [2021-11-23 13:41:26,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716b1654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:26, skipping insertion in model container [2021-11-23 13:41:26,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:16" (2/3) ... [2021-11-23 13:41:26,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716b1654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:26, skipping insertion in model container [2021-11-23 13:41:26,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:26" (3/3) ... [2021-11-23 13:41:26,119 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-1.c [2021-11-23 13:41:26,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:41:26,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:41:26,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:41:26,221 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 [2021-11-23 13:41:26,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:41:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 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) [2021-11-23 13:41:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:26,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:26,306 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] [2021-11-23 13:41:26,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash -704536440, now seen corresponding path program 1 times [2021-11-23 13:41:26,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:26,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472018734] [2021-11-23 13:41:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:26,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:26,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:26,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472018734] [2021-11-23 13:41:26,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472018734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:26,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:26,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:41:26,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721501704] [2021-11-23 13:41:26,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:26,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:26,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:26,600 INFO L87 Difference]: Start difference. First operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 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 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:26,926 INFO L93 Difference]: Finished difference Result 5888 states and 10485 transitions. [2021-11-23 13:41:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:26,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:26,974 INFO L225 Difference]: With dead ends: 5888 [2021-11-23 13:41:26,974 INFO L226 Difference]: Without dead ends: 3094 [2021-11-23 13:41:26,986 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 [2021-11-23 13:41:26,992 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 4766 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 5532 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 [2021-11-23 13:41:26,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 5532 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-11-23 13:41:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3092. [2021-11-23 13:41:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.749190938511327) internal successors, (5405), 3091 states have internal predecessors, (5405), 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) [2021-11-23 13:41:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5405 transitions. [2021-11-23 13:41:27,206 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5405 transitions. Word has length 88 [2021-11-23 13:41:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:27,207 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5405 transitions. [2021-11-23 13:41:27,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5405 transitions. [2021-11-23 13:41:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:27,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:27,218 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] [2021-11-23 13:41:27,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:41:27,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash -858645304, now seen corresponding path program 1 times [2021-11-23 13:41:27,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:27,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260710172] [2021-11-23 13:41:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:27,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:27,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:27,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260710172] [2021-11-23 13:41:27,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260710172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:27,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:27,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:41:27,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340627534] [2021-11-23 13:41:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:27,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:27,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:27,378 INFO L87 Difference]: Start difference. First operand 3092 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:27,611 INFO L93 Difference]: Finished difference Result 4050 states and 6832 transitions. [2021-11-23 13:41:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:27,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:27,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:27,630 INFO L225 Difference]: With dead ends: 4050 [2021-11-23 13:41:27,631 INFO L226 Difference]: Without dead ends: 3092 [2021-11-23 13:41:27,636 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 [2021-11-23 13:41:27,638 INFO L933 BasicCegarLoop]: 4767 mSDtfsCounter, 4759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:27,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 4767 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:27,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-23 13:41:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2021-11-23 13:41:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7466019417475729) internal successors, (5397), 3091 states have internal predecessors, (5397), 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) [2021-11-23 13:41:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5397 transitions. [2021-11-23 13:41:27,745 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5397 transitions. Word has length 88 [2021-11-23 13:41:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:27,746 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5397 transitions. [2021-11-23 13:41:27,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5397 transitions. [2021-11-23 13:41:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:27,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:27,751 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] [2021-11-23 13:41:27,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:41:27,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 937498760, now seen corresponding path program 1 times [2021-11-23 13:41:27,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:27,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389877927] [2021-11-23 13:41:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:27,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:27,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:27,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389877927] [2021-11-23 13:41:27,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389877927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:27,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:27,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:41:27,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348253947] [2021-11-23 13:41:27,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:27,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:27,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:27,848 INFO L87 Difference]: Start difference. First operand 3092 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:27,950 INFO L93 Difference]: Finished difference Result 4049 states and 6815 transitions. [2021-11-23 13:41:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:27,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:27,970 INFO L225 Difference]: With dead ends: 4049 [2021-11-23 13:41:27,970 INFO L226 Difference]: Without dead ends: 3092 [2021-11-23 13:41:27,977 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 [2021-11-23 13:41:27,982 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 4753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:27,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 4762 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-23 13:41:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2021-11-23 13:41:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7440129449838189) internal successors, (5389), 3091 states have internal predecessors, (5389), 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) [2021-11-23 13:41:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5389 transitions. [2021-11-23 13:41:28,080 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5389 transitions. Word has length 88 [2021-11-23 13:41:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:28,082 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5389 transitions. [2021-11-23 13:41:28,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5389 transitions. [2021-11-23 13:41:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:28,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:28,084 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] [2021-11-23 13:41:28,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:41:28,085 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:28,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1965270216, now seen corresponding path program 1 times [2021-11-23 13:41:28,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:28,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210309033] [2021-11-23 13:41:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:28,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:28,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:28,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210309033] [2021-11-23 13:41:28,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210309033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:28,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:28,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:28,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806093254] [2021-11-23 13:41:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:28,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:28,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:28,182 INFO L87 Difference]: Start difference. First operand 3092 states and 5389 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:28,385 INFO L93 Difference]: Finished difference Result 4949 states and 8125 transitions. [2021-11-23 13:41:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:28,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:28,409 INFO L225 Difference]: With dead ends: 4949 [2021-11-23 13:41:28,410 INFO L226 Difference]: Without dead ends: 3993 [2021-11-23 13:41:28,412 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 [2021-11-23 13:41:28,414 INFO L933 BasicCegarLoop]: 5451 mSDtfsCounter, 9508 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9508 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:28,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9508 Valid, 6147 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3993 states. [2021-11-23 13:41:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3993 to 3092. [2021-11-23 13:41:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.743042071197411) internal successors, (5386), 3091 states have internal predecessors, (5386), 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) [2021-11-23 13:41:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5386 transitions. [2021-11-23 13:41:28,530 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5386 transitions. Word has length 88 [2021-11-23 13:41:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:28,530 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5386 transitions. [2021-11-23 13:41:28,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5386 transitions. [2021-11-23 13:41:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:28,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:28,532 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] [2021-11-23 13:41:28,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:41:28,533 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash 54227658, now seen corresponding path program 1 times [2021-11-23 13:41:28,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:28,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926724327] [2021-11-23 13:41:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:28,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:28,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:28,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926724327] [2021-11-23 13:41:28,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926724327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:28,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:28,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:28,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910374124] [2021-11-23 13:41:28,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:28,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:28,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:28,592 INFO L87 Difference]: Start difference. First operand 3092 states and 5386 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:28,801 INFO L93 Difference]: Finished difference Result 4947 states and 8114 transitions. [2021-11-23 13:41:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:28,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:28,825 INFO L225 Difference]: With dead ends: 4947 [2021-11-23 13:41:28,826 INFO L226 Difference]: Without dead ends: 3992 [2021-11-23 13:41:28,829 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 [2021-11-23 13:41:28,830 INFO L933 BasicCegarLoop]: 5446 mSDtfsCounter, 9503 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9503 SdHoareTripleChecker+Valid, 6139 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:28,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9503 Valid, 6139 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2021-11-23 13:41:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3092. [2021-11-23 13:41:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7420711974110032) internal successors, (5383), 3091 states have internal predecessors, (5383), 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) [2021-11-23 13:41:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5383 transitions. [2021-11-23 13:41:28,956 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5383 transitions. Word has length 88 [2021-11-23 13:41:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:28,957 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5383 transitions. [2021-11-23 13:41:28,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5383 transitions. [2021-11-23 13:41:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:28,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:28,963 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] [2021-11-23 13:41:28,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:41:28,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash 131128456, now seen corresponding path program 1 times [2021-11-23 13:41:28,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:28,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092405868] [2021-11-23 13:41:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:28,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:29,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:29,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092405868] [2021-11-23 13:41:29,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092405868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:29,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:29,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:29,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805472666] [2021-11-23 13:41:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:29,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:29,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:29,037 INFO L87 Difference]: Start difference. First operand 3092 states and 5383 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:29,361 INFO L93 Difference]: Finished difference Result 4857 states and 7977 transitions. [2021-11-23 13:41:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:29,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:29,390 INFO L225 Difference]: With dead ends: 4857 [2021-11-23 13:41:29,390 INFO L226 Difference]: Without dead ends: 3904 [2021-11-23 13:41:29,393 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 [2021-11-23 13:41:29,394 INFO L933 BasicCegarLoop]: 5346 mSDtfsCounter, 9433 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9433 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:29,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9433 Valid, 6016 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-11-23 13:41:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3092. [2021-11-23 13:41:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7411003236245954) internal successors, (5380), 3091 states have internal predecessors, (5380), 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) [2021-11-23 13:41:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5380 transitions. [2021-11-23 13:41:29,552 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5380 transitions. Word has length 88 [2021-11-23 13:41:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:29,552 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5380 transitions. [2021-11-23 13:41:29,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5380 transitions. [2021-11-23 13:41:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:29,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:29,555 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] [2021-11-23 13:41:29,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:41:29,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2039586246, now seen corresponding path program 1 times [2021-11-23 13:41:29,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:29,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425732330] [2021-11-23 13:41:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:29,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:29,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425732330] [2021-11-23 13:41:29,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425732330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:29,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:29,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:29,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799391438] [2021-11-23 13:41:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:29,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:29,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:29,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:29,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:29,605 INFO L87 Difference]: Start difference. First operand 3092 states and 5380 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:29,850 INFO L93 Difference]: Finished difference Result 4853 states and 7964 transitions. [2021-11-23 13:41:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:29,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:29,886 INFO L225 Difference]: With dead ends: 4853 [2021-11-23 13:41:29,886 INFO L226 Difference]: Without dead ends: 3901 [2021-11-23 13:41:29,889 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 [2021-11-23 13:41:29,892 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 9925 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9925 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:29,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9925 Valid, 5522 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-23 13:41:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3092. [2021-11-23 13:41:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7401294498381876) internal successors, (5377), 3091 states have internal predecessors, (5377), 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) [2021-11-23 13:41:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5377 transitions. [2021-11-23 13:41:30,032 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5377 transitions. Word has length 88 [2021-11-23 13:41:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:30,034 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5377 transitions. [2021-11-23 13:41:30,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5377 transitions. [2021-11-23 13:41:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:30,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:30,036 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] [2021-11-23 13:41:30,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:41:30,037 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1546960072, now seen corresponding path program 1 times [2021-11-23 13:41:30,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:30,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910822975] [2021-11-23 13:41:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:30,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:30,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:30,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910822975] [2021-11-23 13:41:30,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910822975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:30,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:30,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:41:30,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126778110] [2021-11-23 13:41:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:30,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:30,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:30,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:30,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:30,087 INFO L87 Difference]: Start difference. First operand 3092 states and 5377 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:30,227 INFO L93 Difference]: Finished difference Result 4043 states and 6768 transitions. [2021-11-23 13:41:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:30,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:30,236 INFO L225 Difference]: With dead ends: 4043 [2021-11-23 13:41:30,236 INFO L226 Difference]: Without dead ends: 3092 [2021-11-23 13:41:30,239 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 [2021-11-23 13:41:30,239 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 4664 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:30,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4664 Valid, 4791 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-23 13:41:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2021-11-23 13:41:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.733009708737864) internal successors, (5355), 3091 states have internal predecessors, (5355), 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) [2021-11-23 13:41:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5355 transitions. [2021-11-23 13:41:30,373 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5355 transitions. Word has length 88 [2021-11-23 13:41:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:30,374 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5355 transitions. [2021-11-23 13:41:30,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-11-23 13:41:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5355 transitions. [2021-11-23 13:41:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:30,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:30,375 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] [2021-11-23 13:41:30,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:41:30,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1288884727, now seen corresponding path program 1 times [2021-11-23 13:41:30,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:30,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437560865] [2021-11-23 13:41:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:30,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:30,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:30,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437560865] [2021-11-23 13:41:30,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437560865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:30,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:30,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:30,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177119253] [2021-11-23 13:41:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:30,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:30,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:30,415 INFO L87 Difference]: Start difference. First operand 3092 states and 5355 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:30,667 INFO L93 Difference]: Finished difference Result 4851 states and 7891 transitions. [2021-11-23 13:41:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:30,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:30,678 INFO L225 Difference]: With dead ends: 4851 [2021-11-23 13:41:30,678 INFO L226 Difference]: Without dead ends: 3901 [2021-11-23 13:41:30,681 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 [2021-11-23 13:41:30,682 INFO L933 BasicCegarLoop]: 5312 mSDtfsCounter, 9397 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9397 SdHoareTripleChecker+Valid, 5964 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:30,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9397 Valid, 5964 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-23 13:41:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3092. [2021-11-23 13:41:30,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7320388349514564) internal successors, (5352), 3091 states have internal predecessors, (5352), 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) [2021-11-23 13:41:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5352 transitions. [2021-11-23 13:41:30,847 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5352 transitions. Word has length 88 [2021-11-23 13:41:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:30,848 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5352 transitions. [2021-11-23 13:41:30,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5352 transitions. [2021-11-23 13:41:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:30,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:30,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:30,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:41:30,850 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:30,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1789928843, now seen corresponding path program 1 times [2021-11-23 13:41:30,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:30,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81031845] [2021-11-23 13:41:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:30,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:30,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:30,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81031845] [2021-11-23 13:41:30,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81031845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:30,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:30,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:30,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287509722] [2021-11-23 13:41:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:30,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:30,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:30,887 INFO L87 Difference]: Start difference. First operand 3092 states and 5352 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:31,180 INFO L93 Difference]: Finished difference Result 4849 states and 7880 transitions. [2021-11-23 13:41:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:31,191 INFO L225 Difference]: With dead ends: 4849 [2021-11-23 13:41:31,191 INFO L226 Difference]: Without dead ends: 3900 [2021-11-23 13:41:31,195 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 [2021-11-23 13:41:31,196 INFO L933 BasicCegarLoop]: 5307 mSDtfsCounter, 9392 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9392 SdHoareTripleChecker+Valid, 5956 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:31,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9392 Valid, 5956 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2021-11-23 13:41:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3092. [2021-11-23 13:41:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7310679611650486) internal successors, (5349), 3091 states have internal predecessors, (5349), 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) [2021-11-23 13:41:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5349 transitions. [2021-11-23 13:41:31,376 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5349 transitions. Word has length 88 [2021-11-23 13:41:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:31,377 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5349 transitions. [2021-11-23 13:41:31,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5349 transitions. [2021-11-23 13:41:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:31,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:31,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:31,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:41:31,380 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1057961417, now seen corresponding path program 1 times [2021-11-23 13:41:31,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:31,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925755246] [2021-11-23 13:41:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:31,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:31,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:31,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925755246] [2021-11-23 13:41:31,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925755246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:31,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:31,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:31,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898084530] [2021-11-23 13:41:31,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:31,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:31,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:31,420 INFO L87 Difference]: Start difference. First operand 3092 states and 5349 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:31,726 INFO L93 Difference]: Finished difference Result 4847 states and 7869 transitions. [2021-11-23 13:41:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:31,736 INFO L225 Difference]: With dead ends: 4847 [2021-11-23 13:41:31,736 INFO L226 Difference]: Without dead ends: 3899 [2021-11-23 13:41:31,739 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 [2021-11-23 13:41:31,740 INFO L933 BasicCegarLoop]: 5302 mSDtfsCounter, 9387 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9387 SdHoareTripleChecker+Valid, 5948 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:31,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9387 Valid, 5948 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-11-23 13:41:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3092. [2021-11-23 13:41:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7300970873786408) internal successors, (5346), 3091 states have internal predecessors, (5346), 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) [2021-11-23 13:41:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5346 transitions. [2021-11-23 13:41:31,887 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5346 transitions. Word has length 88 [2021-11-23 13:41:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:31,888 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5346 transitions. [2021-11-23 13:41:31,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5346 transitions. [2021-11-23 13:41:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:31,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:31,890 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] [2021-11-23 13:41:31,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:41:31,890 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash -628218421, now seen corresponding path program 1 times [2021-11-23 13:41:31,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:31,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667966290] [2021-11-23 13:41:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:31,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:31,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667966290] [2021-11-23 13:41:31,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667966290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:31,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:31,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:31,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917518999] [2021-11-23 13:41:31,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:31,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:31,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:31,936 INFO L87 Difference]: Start difference. First operand 3092 states and 5346 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2021-11-23 13:41:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:32,393 INFO L93 Difference]: Finished difference Result 5783 states and 9184 transitions. [2021-11-23 13:41:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:41:32,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:32,406 INFO L225 Difference]: With dead ends: 5783 [2021-11-23 13:41:32,407 INFO L226 Difference]: Without dead ends: 4842 [2021-11-23 13:41:32,410 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 [2021-11-23 13:41:32,411 INFO L933 BasicCegarLoop]: 5400 mSDtfsCounter, 2362 mSDsluCounter, 15339 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:32,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2362 Valid, 20739 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:32,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2021-11-23 13:41:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 3140. [2021-11-23 13:41:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3138 states have (on average 1.7189292543021033) internal successors, (5394), 3139 states have internal predecessors, (5394), 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) [2021-11-23 13:41:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5394 transitions. [2021-11-23 13:41:32,586 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 5394 transitions. Word has length 88 [2021-11-23 13:41:32,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:32,587 INFO L470 AbstractCegarLoop]: Abstraction has 3140 states and 5394 transitions. [2021-11-23 13:41:32,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2021-11-23 13:41:32,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 5394 transitions. [2021-11-23 13:41:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:32,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:32,589 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] [2021-11-23 13:41:32,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:41:32,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash -67518643, now seen corresponding path program 1 times [2021-11-23 13:41:32,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:32,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118861146] [2021-11-23 13:41:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:32,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:32,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:32,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118861146] [2021-11-23 13:41:32,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118861146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:32,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:32,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:32,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206287369] [2021-11-23 13:41:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:32,625 INFO L87 Difference]: Start difference. First operand 3140 states and 5394 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:33,063 INFO L93 Difference]: Finished difference Result 5795 states and 9126 transitions. [2021-11-23 13:41:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:33,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 13:41:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:33,077 INFO L225 Difference]: With dead ends: 5795 [2021-11-23 13:41:33,077 INFO L226 Difference]: Without dead ends: 4801 [2021-11-23 13:41:33,081 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 [2021-11-23 13:41:33,082 INFO L933 BasicCegarLoop]: 4785 mSDtfsCounter, 9819 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9819 SdHoareTripleChecker+Valid, 6343 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:33,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9819 Valid, 6343 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-11-23 13:41:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4639. [2021-11-23 13:41:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 4637 states have (on average 1.6094457623463445) internal successors, (7463), 4638 states have internal predecessors, (7463), 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) [2021-11-23 13:41:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 7463 transitions. [2021-11-23 13:41:33,405 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 7463 transitions. Word has length 88 [2021-11-23 13:41:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:33,406 INFO L470 AbstractCegarLoop]: Abstraction has 4639 states and 7463 transitions. [2021-11-23 13:41:33,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 13:41:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 7463 transitions. [2021-11-23 13:41:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:33,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:33,408 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:33,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:41:33,409 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -550195603, now seen corresponding path program 1 times [2021-11-23 13:41:33,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357935731] [2021-11-23 13:41:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:33,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:33,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357935731] [2021-11-23 13:41:33,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357935731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:33,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:33,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:33,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465140646] [2021-11-23 13:41:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:33,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:33,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:33,467 INFO L87 Difference]: Start difference. First operand 4639 states and 7463 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:34,060 INFO L93 Difference]: Finished difference Result 8711 states and 13164 transitions. [2021-11-23 13:41:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:41:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:34,075 INFO L225 Difference]: With dead ends: 8711 [2021-11-23 13:41:34,075 INFO L226 Difference]: Without dead ends: 6228 [2021-11-23 13:41:34,080 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 [2021-11-23 13:41:34,081 INFO L933 BasicCegarLoop]: 4792 mSDtfsCounter, 2398 mSDsluCounter, 14735 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 19527 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:34,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2398 Valid, 19527 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:34,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2021-11-23 13:41:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 4684. [2021-11-23 13:41:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 4682 states have (on average 1.5982486117044) internal successors, (7483), 4683 states have internal predecessors, (7483), 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) [2021-11-23 13:41:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 7483 transitions. [2021-11-23 13:41:34,537 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 7483 transitions. Word has length 105 [2021-11-23 13:41:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:34,538 INFO L470 AbstractCegarLoop]: Abstraction has 4684 states and 7483 transitions. [2021-11-23 13:41:34,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 7483 transitions. [2021-11-23 13:41:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:34,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:34,541 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:34,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:41:34,542 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:34,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1358262187, now seen corresponding path program 1 times [2021-11-23 13:41:34,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:34,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832170243] [2021-11-23 13:41:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:34,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:34,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:34,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832170243] [2021-11-23 13:41:34,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832170243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:34,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:34,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:34,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126678744] [2021-11-23 13:41:34,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:34,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:34,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:34,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:34,609 INFO L87 Difference]: Start difference. First operand 4684 states and 7483 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:35,201 INFO L93 Difference]: Finished difference Result 7939 states and 11945 transitions. [2021-11-23 13:41:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:41:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:35,215 INFO L225 Difference]: With dead ends: 7939 [2021-11-23 13:41:35,216 INFO L226 Difference]: Without dead ends: 5418 [2021-11-23 13:41:35,223 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 [2021-11-23 13:41:35,224 INFO L933 BasicCegarLoop]: 4764 mSDtfsCounter, 1944 mSDsluCounter, 13226 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 17990 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:35,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 17990 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2021-11-23 13:41:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4690. [2021-11-23 13:41:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4688 states have (on average 1.589377133105802) internal successors, (7451), 4689 states have internal predecessors, (7451), 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) [2021-11-23 13:41:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7451 transitions. [2021-11-23 13:41:35,645 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7451 transitions. Word has length 105 [2021-11-23 13:41:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:35,646 INFO L470 AbstractCegarLoop]: Abstraction has 4690 states and 7451 transitions. [2021-11-23 13:41:35,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7451 transitions. [2021-11-23 13:41:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:35,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:35,649 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:35,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:41:35,649 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1303869289, now seen corresponding path program 1 times [2021-11-23 13:41:35,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:35,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146448840] [2021-11-23 13:41:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:35,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:35,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:35,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146448840] [2021-11-23 13:41:35,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146448840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:35,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:35,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:41:35,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224098814] [2021-11-23 13:41:35,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:35,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:35,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:35,697 INFO L87 Difference]: Start difference. First operand 4690 states and 7451 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2021-11-23 13:41:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:36,364 INFO L93 Difference]: Finished difference Result 9384 states and 13844 transitions. [2021-11-23 13:41:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:36,382 INFO L225 Difference]: With dead ends: 9384 [2021-11-23 13:41:36,382 INFO L226 Difference]: Without dead ends: 6866 [2021-11-23 13:41:36,389 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 [2021-11-23 13:41:36,391 INFO L933 BasicCegarLoop]: 4710 mSDtfsCounter, 4588 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4588 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:36,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4588 Valid, 5353 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2021-11-23 13:41:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6852. [2021-11-23 13:41:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6850 states have (on average 1.5125547445255474) internal successors, (10361), 6851 states have internal predecessors, (10361), 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) [2021-11-23 13:41:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10361 transitions. [2021-11-23 13:41:37,066 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10361 transitions. Word has length 105 [2021-11-23 13:41:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:37,066 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10361 transitions. [2021-11-23 13:41:37,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2021-11-23 13:41:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10361 transitions. [2021-11-23 13:41:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:37,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:37,069 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:37,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:41:37,070 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1311619848, now seen corresponding path program 1 times [2021-11-23 13:41:37,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:37,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066242282] [2021-11-23 13:41:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:37,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:37,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:37,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066242282] [2021-11-23 13:41:37,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066242282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:37,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:37,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:37,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705637613] [2021-11-23 13:41:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:37,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:37,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:37,123 INFO L87 Difference]: Start difference. First operand 6852 states and 10361 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:38,274 INFO L93 Difference]: Finished difference Result 14967 states and 21450 transitions. [2021-11-23 13:41:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:41:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:38,297 INFO L225 Difference]: With dead ends: 14967 [2021-11-23 13:41:38,297 INFO L226 Difference]: Without dead ends: 10291 [2021-11-23 13:41:38,306 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 [2021-11-23 13:41:38,306 INFO L933 BasicCegarLoop]: 4720 mSDtfsCounter, 1861 mSDsluCounter, 14430 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 19150 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:38,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 19150 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states. [2021-11-23 13:41:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10291 to 6969. [2021-11-23 13:41:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.4990670302856324) internal successors, (10444), 6968 states have internal predecessors, (10444), 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) [2021-11-23 13:41:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10444 transitions. [2021-11-23 13:41:38,942 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10444 transitions. Word has length 105 [2021-11-23 13:41:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:38,942 INFO L470 AbstractCegarLoop]: Abstraction has 6969 states and 10444 transitions. [2021-11-23 13:41:38,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10444 transitions. [2021-11-23 13:41:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:38,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:38,945 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:38,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:41:38,945 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1445007418, now seen corresponding path program 1 times [2021-11-23 13:41:38,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:38,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896917530] [2021-11-23 13:41:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:38,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:38,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:38,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896917530] [2021-11-23 13:41:38,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896917530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:38,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:38,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:38,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118423848] [2021-11-23 13:41:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:38,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:38,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:38,998 INFO L87 Difference]: Start difference. First operand 6969 states and 10444 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:40,488 INFO L93 Difference]: Finished difference Result 17886 states and 25221 transitions. [2021-11-23 13:41:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:41:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:40,522 INFO L225 Difference]: With dead ends: 17886 [2021-11-23 13:41:40,523 INFO L226 Difference]: Without dead ends: 13100 [2021-11-23 13:41:40,534 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 [2021-11-23 13:41:40,535 INFO L933 BasicCegarLoop]: 4765 mSDtfsCounter, 1672 mSDsluCounter, 14512 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 19277 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:40,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 19277 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13100 states. [2021-11-23 13:41:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13100 to 7188. [2021-11-23 13:41:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7186 states have (on average 1.4838575006957975) internal successors, (10663), 7187 states have internal predecessors, (10663), 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) [2021-11-23 13:41:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10663 transitions. [2021-11-23 13:41:41,247 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10663 transitions. Word has length 105 [2021-11-23 13:41:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:41,248 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 10663 transitions. [2021-11-23 13:41:41,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-23 13:41:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10663 transitions. [2021-11-23 13:41:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:41,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:41,251 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:41,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:41:41,251 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 483265284, now seen corresponding path program 1 times [2021-11-23 13:41:41,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690048131] [2021-11-23 13:41:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:41,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:41,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:41,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690048131] [2021-11-23 13:41:41,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690048131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:41,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:41,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:41,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991657124] [2021-11-23 13:41:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:41,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:41,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:41,293 INFO L87 Difference]: Start difference. First operand 7188 states and 10663 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:41,934 INFO L93 Difference]: Finished difference Result 12185 states and 17283 transitions. [2021-11-23 13:41:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:41,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:41,954 INFO L225 Difference]: With dead ends: 12185 [2021-11-23 13:41:41,954 INFO L226 Difference]: Without dead ends: 7188 [2021-11-23 13:41:41,962 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 [2021-11-23 13:41:41,963 INFO L933 BasicCegarLoop]: 4707 mSDtfsCounter, 9369 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9369 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:41,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9369 Valid, 4707 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2021-11-23 13:41:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 7188. [2021-11-23 13:41:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7186 states have (on average 1.4803785137767882) internal successors, (10638), 7187 states have internal predecessors, (10638), 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) [2021-11-23 13:41:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10638 transitions. [2021-11-23 13:41:42,608 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10638 transitions. Word has length 105 [2021-11-23 13:41:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:42,609 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 10638 transitions. [2021-11-23 13:41:42,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10638 transitions. [2021-11-23 13:41:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:42,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:42,612 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:42,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:41:42,612 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:42,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash 906912006, now seen corresponding path program 1 times [2021-11-23 13:41:42,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:42,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416852891] [2021-11-23 13:41:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:42,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:42,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:42,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416852891] [2021-11-23 13:41:42,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416852891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:42,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:42,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089066123] [2021-11-23 13:41:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:42,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:42,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:42,663 INFO L87 Difference]: Start difference. First operand 7188 states and 10638 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:43,364 INFO L93 Difference]: Finished difference Result 12184 states and 17232 transitions. [2021-11-23 13:41:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:43,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:43,381 INFO L225 Difference]: With dead ends: 12184 [2021-11-23 13:41:43,381 INFO L226 Difference]: Without dead ends: 7188 [2021-11-23 13:41:43,387 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 [2021-11-23 13:41:43,388 INFO L933 BasicCegarLoop]: 4704 mSDtfsCounter, 9362 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9362 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:43,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9362 Valid, 4704 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2021-11-23 13:41:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 7188. [2021-11-23 13:41:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7186 states have (on average 1.476899526857779) internal successors, (10613), 7187 states have internal predecessors, (10613), 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) [2021-11-23 13:41:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10613 transitions. [2021-11-23 13:41:43,983 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10613 transitions. Word has length 105 [2021-11-23 13:41:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:43,983 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 10613 transitions. [2021-11-23 13:41:43,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10613 transitions. [2021-11-23 13:41:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:43,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:43,986 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:43,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 13:41:43,986 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash -464895292, now seen corresponding path program 1 times [2021-11-23 13:41:43,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:43,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910044498] [2021-11-23 13:41:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:43,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:44,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:44,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910044498] [2021-11-23 13:41:44,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910044498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:44,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:44,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:44,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811997621] [2021-11-23 13:41:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:44,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:44,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:44,027 INFO L87 Difference]: Start difference. First operand 7188 states and 10613 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:45,014 INFO L93 Difference]: Finished difference Result 17965 states and 24700 transitions. [2021-11-23 13:41:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:45,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:45,046 INFO L225 Difference]: With dead ends: 17965 [2021-11-23 13:41:45,046 INFO L226 Difference]: Without dead ends: 12970 [2021-11-23 13:41:45,057 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 [2021-11-23 13:41:45,058 INFO L933 BasicCegarLoop]: 4900 mSDtfsCounter, 9890 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9890 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:45,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9890 Valid, 5819 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12970 states. [2021-11-23 13:41:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12970 to 7975. [2021-11-23 13:41:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7975 states, 7973 states have (on average 1.4472595008152516) internal successors, (11539), 7974 states have internal predecessors, (11539), 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) [2021-11-23 13:41:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 11539 transitions. [2021-11-23 13:41:45,959 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 11539 transitions. Word has length 105 [2021-11-23 13:41:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:45,960 INFO L470 AbstractCegarLoop]: Abstraction has 7975 states and 11539 transitions. [2021-11-23 13:41:45,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 11539 transitions. [2021-11-23 13:41:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:45,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:45,963 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:45,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 13:41:45,964 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:45,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1984704838, now seen corresponding path program 1 times [2021-11-23 13:41:45,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:45,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454889663] [2021-11-23 13:41:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:45,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:46,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:46,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454889663] [2021-11-23 13:41:46,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454889663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:46,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:46,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:46,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635345092] [2021-11-23 13:41:46,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:46,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:46,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:46,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:46,005 INFO L87 Difference]: Start difference. First operand 7975 states and 11539 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:47,043 INFO L93 Difference]: Finished difference Result 18889 states and 25695 transitions. [2021-11-23 13:41:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:47,065 INFO L225 Difference]: With dead ends: 18889 [2021-11-23 13:41:47,065 INFO L226 Difference]: Without dead ends: 13163 [2021-11-23 13:41:47,075 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 [2021-11-23 13:41:47,076 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 9840 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9840 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:47,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9840 Valid, 5468 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2021-11-23 13:41:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 7819. [2021-11-23 13:41:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7819 states, 7817 states have (on average 1.4396827427401817) internal successors, (11254), 7818 states have internal predecessors, (11254), 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) [2021-11-23 13:41:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 11254 transitions. [2021-11-23 13:41:47,710 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 11254 transitions. Word has length 105 [2021-11-23 13:41:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:47,711 INFO L470 AbstractCegarLoop]: Abstraction has 7819 states and 11254 transitions. [2021-11-23 13:41:47,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 11254 transitions. [2021-11-23 13:41:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:47,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:47,713 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 13:41:47,714 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash 955345540, now seen corresponding path program 1 times [2021-11-23 13:41:47,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:47,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737878563] [2021-11-23 13:41:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:47,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:47,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737878563] [2021-11-23 13:41:47,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737878563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:47,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:47,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:47,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627296510] [2021-11-23 13:41:47,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:47,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:47,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:47,756 INFO L87 Difference]: Start difference. First operand 7819 states and 11254 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:48,897 INFO L93 Difference]: Finished difference Result 18730 states and 25266 transitions. [2021-11-23 13:41:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:48,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:48,914 INFO L225 Difference]: With dead ends: 18730 [2021-11-23 13:41:48,914 INFO L226 Difference]: Without dead ends: 13107 [2021-11-23 13:41:48,925 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 [2021-11-23 13:41:48,926 INFO L933 BasicCegarLoop]: 4694 mSDtfsCounter, 9785 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9785 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:48,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9785 Valid, 5391 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:48,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13107 states. [2021-11-23 13:41:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13107 to 7819. [2021-11-23 13:41:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7819 states, 7817 states have (on average 1.4270180376103365) internal successors, (11155), 7818 states have internal predecessors, (11155), 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) [2021-11-23 13:41:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 11155 transitions. [2021-11-23 13:41:49,523 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 11155 transitions. Word has length 105 [2021-11-23 13:41:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:49,523 INFO L470 AbstractCegarLoop]: Abstraction has 7819 states and 11155 transitions. [2021-11-23 13:41:49,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 11155 transitions. [2021-11-23 13:41:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:49,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:49,526 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:49,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 13:41:49,526 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 111340038, now seen corresponding path program 1 times [2021-11-23 13:41:49,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:49,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78481887] [2021-11-23 13:41:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:49,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:49,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:49,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78481887] [2021-11-23 13:41:49,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78481887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:49,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:49,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:49,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501539465] [2021-11-23 13:41:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:49,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:49,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:49,565 INFO L87 Difference]: Start difference. First operand 7819 states and 11155 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:50,598 INFO L93 Difference]: Finished difference Result 18247 states and 24366 transitions. [2021-11-23 13:41:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:50,613 INFO L225 Difference]: With dead ends: 18247 [2021-11-23 13:41:50,613 INFO L226 Difference]: Without dead ends: 12681 [2021-11-23 13:41:50,620 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 [2021-11-23 13:41:50,621 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 9726 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9726 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:50,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9726 Valid, 5336 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12681 states. [2021-11-23 13:41:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12681 to 7702. [2021-11-23 13:41:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7702 states, 7700 states have (on average 1.4201298701298701) internal successors, (10935), 7701 states have internal predecessors, (10935), 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) [2021-11-23 13:41:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7702 states to 7702 states and 10935 transitions. [2021-11-23 13:41:51,173 INFO L78 Accepts]: Start accepts. Automaton has 7702 states and 10935 transitions. Word has length 105 [2021-11-23 13:41:51,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:51,174 INFO L470 AbstractCegarLoop]: Abstraction has 7702 states and 10935 transitions. [2021-11-23 13:41:51,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7702 states and 10935 transitions. [2021-11-23 13:41:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:51,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:51,176 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:51,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 13:41:51,176 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:51,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2132643260, now seen corresponding path program 1 times [2021-11-23 13:41:51,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932025642] [2021-11-23 13:41:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:51,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:41:51,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932025642] [2021-11-23 13:41:51,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932025642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:51,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:51,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:51,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511648494] [2021-11-23 13:41:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:51,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:41:51,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:41:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:41:51,213 INFO L87 Difference]: Start difference. First operand 7702 states and 10935 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:52,011 INFO L93 Difference]: Finished difference Result 15482 states and 20664 transitions. [2021-11-23 13:41:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:41:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2021-11-23 13:41:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:52,021 INFO L225 Difference]: With dead ends: 15482 [2021-11-23 13:41:52,021 INFO L226 Difference]: Without dead ends: 10008 [2021-11-23 13:41:52,028 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 [2021-11-23 13:41:52,028 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 9667 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9667 SdHoareTripleChecker+Valid, 5278 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:52,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9667 Valid, 5278 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2021-11-23 13:41:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 7462. [2021-11-23 13:41:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 7460 states have (on average 1.4088471849865951) internal successors, (10510), 7461 states have internal predecessors, (10510), 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) [2021-11-23 13:41:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 10510 transitions. [2021-11-23 13:41:52,598 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 10510 transitions. Word has length 105 [2021-11-23 13:41:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:52,598 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 10510 transitions. [2021-11-23 13:41:52,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:41:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 10510 transitions. [2021-11-23 13:41:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:41:52,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:52,601 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:52,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 13:41:52,601 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2089937478, now seen corresponding path program 1 times [2021-11-23 13:41:52,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:52,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988682980] [2021-11-23 13:41:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:52,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:52,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:52,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988682980] [2021-11-23 13:41:52,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988682980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:52,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:52,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:52,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31183016] [2021-11-23 13:41:52,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:52,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:52,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:52,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:52,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:52,637 INFO L87 Difference]: Start difference. First operand 7462 states and 10510 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-23 13:41:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:53,619 INFO L93 Difference]: Finished difference Result 17401 states and 22578 transitions. [2021-11-23 13:41:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-23 13:41:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:53,632 INFO L225 Difference]: With dead ends: 17401 [2021-11-23 13:41:53,632 INFO L226 Difference]: Without dead ends: 12188 [2021-11-23 13:41:53,638 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 [2021-11-23 13:41:53,639 INFO L933 BasicCegarLoop]: 4645 mSDtfsCounter, 4472 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:53,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 5318 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12188 states. [2021-11-23 13:41:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12188 to 12188. [2021-11-23 13:41:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 12186 states have (on average 1.3230756605941245) internal successors, (16123), 12187 states have internal predecessors, (16123), 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) [2021-11-23 13:41:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 16123 transitions. [2021-11-23 13:41:54,650 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 16123 transitions. Word has length 105 [2021-11-23 13:41:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:54,650 INFO L470 AbstractCegarLoop]: Abstraction has 12188 states and 16123 transitions. [2021-11-23 13:41:54,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-23 13:41:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 16123 transitions. [2021-11-23 13:41:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:41:54,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:54,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:54,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 13:41:54,654 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1796958080, now seen corresponding path program 1 times [2021-11-23 13:41:54,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:54,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177958464] [2021-11-23 13:41:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:54,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:54,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:54,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177958464] [2021-11-23 13:41:54,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177958464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:54,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:54,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:54,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714479900] [2021-11-23 13:41:54,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:54,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:54,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:54,693 INFO L87 Difference]: Start difference. First operand 12188 states and 16123 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-23 13:41:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:56,506 INFO L93 Difference]: Finished difference Result 30766 states and 38507 transitions. [2021-11-23 13:41:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-23 13:41:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:56,531 INFO L225 Difference]: With dead ends: 30766 [2021-11-23 13:41:56,531 INFO L226 Difference]: Without dead ends: 20950 [2021-11-23 13:41:56,537 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 [2021-11-23 13:41:56,538 INFO L933 BasicCegarLoop]: 4900 mSDtfsCounter, 4479 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:56,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4479 Valid, 5569 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20950 states. [2021-11-23 13:41:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20950 to 20948. [2021-11-23 13:41:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20948 states, 20946 states have (on average 1.2682612431967917) internal successors, (26565), 20947 states have internal predecessors, (26565), 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) [2021-11-23 13:41:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20948 states to 20948 states and 26565 transitions. [2021-11-23 13:41:58,456 INFO L78 Accepts]: Start accepts. Automaton has 20948 states and 26565 transitions. Word has length 106 [2021-11-23 13:41:58,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:58,457 INFO L470 AbstractCegarLoop]: Abstraction has 20948 states and 26565 transitions. [2021-11-23 13:41:58,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-23 13:41:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 20948 states and 26565 transitions. [2021-11-23 13:41:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:41:58,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:58,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:58,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 13:41:58,465 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1466968318, now seen corresponding path program 1 times [2021-11-23 13:41:58,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:58,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505977337] [2021-11-23 13:41:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:58,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:41:58,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:58,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505977337] [2021-11-23 13:41:58,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505977337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:58,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:58,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:58,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561104816] [2021-11-23 13:41:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:58,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:58,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:58,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:58,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:58,496 INFO L87 Difference]: Start difference. First operand 20948 states and 26565 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:42:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:42:00,494 INFO L93 Difference]: Finished difference Result 39282 states and 48618 transitions. [2021-11-23 13:42:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:42:00,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 106 [2021-11-23 13:42:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:42:00,521 INFO L225 Difference]: With dead ends: 39282 [2021-11-23 13:42:00,521 INFO L226 Difference]: Without dead ends: 20706 [2021-11-23 13:42:00,536 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 [2021-11-23 13:42:00,537 INFO L933 BasicCegarLoop]: 4647 mSDtfsCounter, 684 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 8605 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 [2021-11-23 13:42:00,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 8605 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:42:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20706 states. [2021-11-23 13:42:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20706 to 20706. [2021-11-23 13:42:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20706 states, 20704 states have (on average 1.2699478361669243) internal successors, (26293), 20705 states have internal predecessors, (26293), 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) [2021-11-23 13:42:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20706 states to 20706 states and 26293 transitions. [2021-11-23 13:42:02,487 INFO L78 Accepts]: Start accepts. Automaton has 20706 states and 26293 transitions. Word has length 106 [2021-11-23 13:42:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:42:02,487 INFO L470 AbstractCegarLoop]: Abstraction has 20706 states and 26293 transitions. [2021-11-23 13:42:02,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-23 13:42:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 20706 states and 26293 transitions. [2021-11-23 13:42:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:42:02,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:42:02,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:42:02,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 13:42:02,493 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:42:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:42:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 245909340, now seen corresponding path program 1 times [2021-11-23 13:42:02,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:42:02,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417685749] [2021-11-23 13:42:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:42:02,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:42:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:42:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:42:02,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:42:02,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417685749] [2021-11-23 13:42:02,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417685749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:42:02,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:42:02,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:42:02,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303398383] [2021-11-23 13:42:02,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:42:02,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:42:02,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:42:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:42:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:42:02,533 INFO L87 Difference]: Start difference. First operand 20706 states and 26293 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-11-23 13:42:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:42:06,009 INFO L93 Difference]: Finished difference Result 56006 states and 68617 transitions. [2021-11-23 13:42:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:42:06,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-11-23 13:42:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:42:06,060 INFO L225 Difference]: With dead ends: 56006 [2021-11-23 13:42:06,060 INFO L226 Difference]: Without dead ends: 37672 [2021-11-23 13:42:06,077 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 [2021-11-23 13:42:06,078 INFO L933 BasicCegarLoop]: 4815 mSDtfsCounter, 4495 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:42:06,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4495 Valid, 5474 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:42:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37672 states. [2021-11-23 13:42:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37672 to 36758. [2021-11-23 13:42:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36758 states, 36756 states have (on average 1.2364511916421808) internal successors, (45447), 36757 states have internal predecessors, (45447), 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) [2021-11-23 13:42:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36758 states to 36758 states and 45447 transitions. [2021-11-23 13:42:09,992 INFO L78 Accepts]: Start accepts. Automaton has 36758 states and 45447 transitions. Word has length 107 [2021-11-23 13:42:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:42:09,992 INFO L470 AbstractCegarLoop]: Abstraction has 36758 states and 45447 transitions. [2021-11-23 13:42:09,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-11-23 13:42:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 36758 states and 45447 transitions. [2021-11-23 13:42:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:42:09,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:42:09,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:42:10,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 13:42:10,000 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:42:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:42:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1276950238, now seen corresponding path program 1 times [2021-11-23 13:42:10,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:42:10,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779326337] [2021-11-23 13:42:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:42:10,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:42:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:42:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:42:10,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:42:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779326337] [2021-11-23 13:42:10,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779326337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:42:10,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:42:10,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:42:10,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206011904] [2021-11-23 13:42:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:42:10,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:42:10,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:42:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:42:10,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:42:10,039 INFO L87 Difference]: Start difference. First operand 36758 states and 45447 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 13:42:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:42:13,939 INFO L93 Difference]: Finished difference Result 70998 states and 86490 transitions. [2021-11-23 13:42:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:42:13,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2021-11-23 13:42:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:42:13,989 INFO L225 Difference]: With dead ends: 70998 [2021-11-23 13:42:13,989 INFO L226 Difference]: Without dead ends: 36518 [2021-11-23 13:42:14,007 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 [2021-11-23 13:42:14,007 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 682 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 8604 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:42:14,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 8604 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:42:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36518 states. [2021-11-23 13:42:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36518 to 36518. [2021-11-23 13:42:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36518 states, 36516 states have (on average 1.2372384708073174) internal successors, (45179), 36517 states have internal predecessors, (45179), 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) [2021-11-23 13:42:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36518 states to 36518 states and 45179 transitions. [2021-11-23 13:42:18,444 INFO L78 Accepts]: Start accepts. Automaton has 36518 states and 45179 transitions. Word has length 107 [2021-11-23 13:42:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:42:18,445 INFO L470 AbstractCegarLoop]: Abstraction has 36518 states and 45179 transitions. [2021-11-23 13:42:18,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 13:42:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 36518 states and 45179 transitions. [2021-11-23 13:42:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 13:42:18,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:42:18,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:42:18,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 13:42:18,450 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:42:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:42:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1080773625, now seen corresponding path program 1 times [2021-11-23 13:42:18,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:42:18,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885174829] [2021-11-23 13:42:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:42:18,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:42:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:42:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:42:18,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:42:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885174829] [2021-11-23 13:42:18,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885174829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:42:18,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:42:18,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:42:18,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162023387] [2021-11-23 13:42:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:42:18,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:42:18,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:42:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:42:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:42:18,488 INFO L87 Difference]: Start difference. First operand 36518 states and 45179 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-23 13:42:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:42:25,826 INFO L93 Difference]: Finished difference Result 102324 states and 123907 transitions. [2021-11-23 13:42:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:42:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-23 13:42:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:42:25,931 INFO L225 Difference]: With dead ends: 102324 [2021-11-23 13:42:25,931 INFO L226 Difference]: Without dead ends: 68178 [2021-11-23 13:42:25,970 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 [2021-11-23 13:42:25,971 INFO L933 BasicCegarLoop]: 4813 mSDtfsCounter, 4483 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4483 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:42:25,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4483 Valid, 5478 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:42:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68178 states.