./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/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 53b2835bffc5e46db9e843d7a27e5dc2af58bf47930b3bc6dacf70c618d5bd01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:43:54,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:43:54,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:43:54,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:43:54,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:43:54,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:43:54,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:43:54,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:43:54,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:43:54,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:43:54,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:43:54,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:43:54,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:43:54,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:43:54,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:43:54,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:43:54,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:43:54,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:43:54,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:43:54,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:43:54,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:43:54,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:43:54,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:43:54,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:43:54,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:43:54,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:43:54,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:43:54,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:43:54,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:43:54,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:43:54,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:43:54,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:43:54,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:43:54,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:43:54,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:43:54,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:43:54,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:43:54,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:43:54,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:43:54,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:43:54,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:43:54,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:43:54,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:43:54,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:43:54,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:43:54,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:43:54,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:43:54,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:43:54,685 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:43:54,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:43:54,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:43:54,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:43:54,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:43:54,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:43:54,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:43:54,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:43:54,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:43:54,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:43:54,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:43:54,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:43:54,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:43:54,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:43:54,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:43:54,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:43:54,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:43:54,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:43:54,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:43:54,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:43:54,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:43:54,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:43:54,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:43:54,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:43:54,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:43:54,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:43:54,694 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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53b2835bffc5e46db9e843d7a27e5dc2af58bf47930b3bc6dacf70c618d5bd01 [2021-11-23 13:43:55,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:43:55,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:43:55,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:43:55,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:43:55,054 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:43:55,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2021-11-23 13:43:55,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/data/f69b20c31/5483c027f18541309cdfdf061a5f1e0a/FLAG2a3afa738 [2021-11-23 13:43:55,638 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:43:55,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2021-11-23 13:43:55,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/data/f69b20c31/5483c027f18541309cdfdf061a5f1e0a/FLAG2a3afa738 [2021-11-23 13:43:55,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/data/f69b20c31/5483c027f18541309cdfdf061a5f1e0a [2021-11-23 13:43:55,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:43:55,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:43:55,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:43:55,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:43:55,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:43:55,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:55" (1/1) ... [2021-11-23 13:43:55,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1779c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:55, skipping insertion in model container [2021-11-23 13:43:55,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:55" (1/1) ... [2021-11-23 13:43:55,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:43:56,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:43:56,234 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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c[911,924] [2021-11-23 13:43:56,300 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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c[8416,8429] [2021-11-23 13:43:56,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:43:56,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:43:56,396 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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c[911,924] [2021-11-23 13:43:56,438 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_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c[8416,8429] [2021-11-23 13:43:56,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:43:56,504 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:43:56,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56 WrapperNode [2021-11-23 13:43:56,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:43:56,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:43:56,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:43:56,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:43:56,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,622 INFO L137 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 65, calls inlined = 95, statements flattened = 1269 [2021-11-23 13:43:56,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:43:56,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:43:56,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:43:56,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:43:56,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:43:56,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:43:56,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:43:56,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:43:56,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (1/1) ... [2021-11-23 13:43:56,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:43:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:56,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:43:56,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_698c5425-b6c1-4a90-9864-a6e80c1ea0f5/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:43:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:43:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:43:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:43:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:43:56,886 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:43:56,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:43:57,945 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1 == ~q_free~0); [2021-11-23 13:43:57,945 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-11-23 13:43:57,945 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:43:57,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:43:57,971 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-23 13:43:57,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:57 BoogieIcfgContainer [2021-11-23 13:43:57,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:43:57,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:43:57,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:43:57,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:43:57,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:43:55" (1/3) ... [2021-11-23 13:43:57,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a46aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:57, skipping insertion in model container [2021-11-23 13:43:57,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:56" (2/3) ... [2021-11-23 13:43:57,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a46aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:57, skipping insertion in model container [2021-11-23 13:43:57,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:57" (3/3) ... [2021-11-23 13:43:57,983 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.03.cil-2.c [2021-11-23 13:43:57,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:43:57,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 13:43:58,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:43:58,120 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 13:43:58,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 13:43:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 467 states, 463 states have (on average 1.5529157667386608) internal successors, (719), 466 states have internal predecessors, (719), 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 13:43:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 13:43:58,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:58,159 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] [2021-11-23 13:43:58,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:58,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1280645398, now seen corresponding path program 1 times [2021-11-23 13:43:58,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:58,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684330510] [2021-11-23 13:43:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:58,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:58,366 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 13:43:58,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:58,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684330510] [2021-11-23 13:43:58,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684330510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:58,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:58,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:43:58,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396193544] [2021-11-23 13:43:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:58,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:58,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:58,406 INFO L87 Difference]: Start difference. First operand has 467 states, 463 states have (on average 1.5529157667386608) internal successors, (719), 466 states have internal predecessors, (719), 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 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 13:43:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:58,598 INFO L93 Difference]: Finished difference Result 1019 states and 1566 transitions. [2021-11-23 13:43:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:43:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-23 13:43:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:58,620 INFO L225 Difference]: With dead ends: 1019 [2021-11-23 13:43:58,620 INFO L226 Difference]: Without dead ends: 604 [2021-11-23 13:43:58,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:43:58,631 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 914 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:58,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 1515 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-23 13:43:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 600. [2021-11-23 13:43:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 597 states have (on average 1.5025125628140703) internal successors, (897), 599 states have internal predecessors, (897), 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 13:43:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 897 transitions. [2021-11-23 13:43:58,772 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 897 transitions. Word has length 44 [2021-11-23 13:43:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:58,773 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 897 transitions. [2021-11-23 13:43:58,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 13:43:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 897 transitions. [2021-11-23 13:43:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 13:43:58,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:58,782 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] [2021-11-23 13:43:58,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:43:58,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 770338600, now seen corresponding path program 1 times [2021-11-23 13:43:58,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:58,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319294055] [2021-11-23 13:43:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:58,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:58,895 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 13:43:58,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:58,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319294055] [2021-11-23 13:43:58,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319294055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:58,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:58,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:43:58,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042829869] [2021-11-23 13:43:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:58,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:58,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:58,899 INFO L87 Difference]: Start difference. First operand 600 states and 897 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 13:43:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:59,085 INFO L93 Difference]: Finished difference Result 1546 states and 2291 transitions. [2021-11-23 13:43:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-23 13:43:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:59,093 INFO L225 Difference]: With dead ends: 1546 [2021-11-23 13:43:59,094 INFO L226 Difference]: Without dead ends: 1269 [2021-11-23 13:43:59,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:59,102 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 2270 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:59,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2270 Valid, 1184 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-11-23 13:43:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1239. [2021-11-23 13:43:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1236 states have (on average 1.47168284789644) internal successors, (1819), 1238 states have internal predecessors, (1819), 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 13:43:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1819 transitions. [2021-11-23 13:43:59,177 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1819 transitions. Word has length 44 [2021-11-23 13:43:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:59,177 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1819 transitions. [2021-11-23 13:43:59,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 13:43:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1819 transitions. [2021-11-23 13:43:59,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 13:43:59,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:59,190 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] [2021-11-23 13:43:59,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:43:59,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash -550065153, now seen corresponding path program 1 times [2021-11-23 13:43:59,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:59,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833247892] [2021-11-23 13:43:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:59,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:59,276 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 13:43:59,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:59,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833247892] [2021-11-23 13:43:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833247892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:59,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:59,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:59,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682159743] [2021-11-23 13:43:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:59,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:59,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:59,280 INFO L87 Difference]: Start difference. First operand 1239 states and 1819 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 13:43:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:59,466 INFO L93 Difference]: Finished difference Result 3426 states and 5015 transitions. [2021-11-23 13:43:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:59,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2021-11-23 13:43:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:59,482 INFO L225 Difference]: With dead ends: 3426 [2021-11-23 13:43:59,482 INFO L226 Difference]: Without dead ends: 2523 [2021-11-23 13:43:59,485 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 13:43:59,486 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 570 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:59,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 2814 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2021-11-23 13:43:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1287. [2021-11-23 13:43:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1284 states have (on average 1.4501557632398754) internal successors, (1862), 1286 states have internal predecessors, (1862), 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 13:43:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1862 transitions. [2021-11-23 13:43:59,607 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1862 transitions. Word has length 45 [2021-11-23 13:43:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:59,607 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1862 transitions. [2021-11-23 13:43:59,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 13:43:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1862 transitions. [2021-11-23 13:43:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 13:43:59,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:59,609 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] [2021-11-23 13:43:59,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:43:59,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1059538243, now seen corresponding path program 1 times [2021-11-23 13:43:59,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:59,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194910793] [2021-11-23 13:43:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:59,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:59,690 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 13:43:59,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:59,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194910793] [2021-11-23 13:43:59,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194910793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:59,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:59,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:43:59,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444844474] [2021-11-23 13:43:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:59,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:59,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:59,696 INFO L87 Difference]: Start difference. First operand 1287 states and 1862 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 13:43:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:59,966 INFO L93 Difference]: Finished difference Result 3600 states and 5135 transitions. [2021-11-23 13:43:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:59,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2021-11-23 13:43:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:59,981 INFO L225 Difference]: With dead ends: 3600 [2021-11-23 13:43:59,982 INFO L226 Difference]: Without dead ends: 2651 [2021-11-23 13:43:59,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:59,993 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 2226 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:59,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 1203 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-11-23 13:44:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2585. [2021-11-23 13:44:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2582 states have (on average 1.4082106893880713) internal successors, (3636), 2584 states have internal predecessors, (3636), 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 13:44:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3636 transitions. [2021-11-23 13:44:00,175 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3636 transitions. Word has length 45 [2021-11-23 13:44:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:00,176 INFO L470 AbstractCegarLoop]: Abstraction has 2585 states and 3636 transitions. [2021-11-23 13:44:00,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 13:44:00,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3636 transitions. [2021-11-23 13:44:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 13:44:00,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:00,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:00,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:44:00,180 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2139015236, now seen corresponding path program 1 times [2021-11-23 13:44:00,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:00,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630536899] [2021-11-23 13:44:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:00,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:44:00,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:00,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630536899] [2021-11-23 13:44:00,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630536899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:00,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:00,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:44:00,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777758759] [2021-11-23 13:44:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:00,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:00,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:00,254 INFO L87 Difference]: Start difference. First operand 2585 states and 3636 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 13:44:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:00,633 INFO L93 Difference]: Finished difference Result 7503 states and 10538 transitions. [2021-11-23 13:44:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:44:00,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 59 [2021-11-23 13:44:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:00,666 INFO L225 Difference]: With dead ends: 7503 [2021-11-23 13:44:00,666 INFO L226 Difference]: Without dead ends: 5261 [2021-11-23 13:44:00,672 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 13:44:00,673 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 472 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:00,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 2776 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2021-11-23 13:44:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 2705. [2021-11-23 13:44:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2702 states have (on average 1.3852701702442636) internal successors, (3743), 2704 states have internal predecessors, (3743), 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 13:44:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3743 transitions. [2021-11-23 13:44:00,925 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3743 transitions. Word has length 59 [2021-11-23 13:44:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:00,926 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 3743 transitions. [2021-11-23 13:44:00,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 13:44:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3743 transitions. [2021-11-23 13:44:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 13:44:00,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:00,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:00,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:44:00,932 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:00,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1295009734, now seen corresponding path program 1 times [2021-11-23 13:44:00,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:00,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033582635] [2021-11-23 13:44:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:00,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:44:00,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:00,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033582635] [2021-11-23 13:44:00,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033582635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:00,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:00,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:00,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505271156] [2021-11-23 13:44:00,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:00,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:00,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:00,974 INFO L87 Difference]: Start difference. First operand 2705 states and 3743 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 13:44:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:01,185 INFO L93 Difference]: Finished difference Result 5564 states and 7703 transitions. [2021-11-23 13:44:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:01,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 59 [2021-11-23 13:44:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:01,205 INFO L225 Difference]: With dead ends: 5564 [2021-11-23 13:44:01,206 INFO L226 Difference]: Without dead ends: 3438 [2021-11-23 13:44:01,210 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 13:44:01,211 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 152 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:01,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1279 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-11-23 13:44:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2299. [2021-11-23 13:44:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2296 states have (on average 1.3850174216027875) internal successors, (3180), 2298 states have internal predecessors, (3180), 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 13:44:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3180 transitions. [2021-11-23 13:44:01,405 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3180 transitions. Word has length 59 [2021-11-23 13:44:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:01,405 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3180 transitions. [2021-11-23 13:44:01,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 13:44:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3180 transitions. [2021-11-23 13:44:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 13:44:01,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:01,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:01,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:44:01,407 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1222623176, now seen corresponding path program 1 times [2021-11-23 13:44:01,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:01,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724621867] [2021-11-23 13:44:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:01,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:44:01,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:01,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724621867] [2021-11-23 13:44:01,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724621867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:01,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:01,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209451755] [2021-11-23 13:44:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:01,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:01,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:01,462 INFO L87 Difference]: Start difference. First operand 2299 states and 3180 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 13:44:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:01,746 INFO L93 Difference]: Finished difference Result 5114 states and 7025 transitions. [2021-11-23 13:44:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 59 [2021-11-23 13:44:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:01,764 INFO L225 Difference]: With dead ends: 5114 [2021-11-23 13:44:01,764 INFO L226 Difference]: Without dead ends: 3161 [2021-11-23 13:44:01,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:44:01,769 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1413 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:01,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 839 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2021-11-23 13:44:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2439. [2021-11-23 13:44:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2436 states have (on average 1.3653530377668308) internal successors, (3326), 2438 states have internal predecessors, (3326), 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 13:44:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 3326 transitions. [2021-11-23 13:44:01,980 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 3326 transitions. Word has length 59 [2021-11-23 13:44:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:01,982 INFO L470 AbstractCegarLoop]: Abstraction has 2439 states and 3326 transitions. [2021-11-23 13:44:01,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 13:44:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 3326 transitions. [2021-11-23 13:44:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 13:44:01,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:01,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:01,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:44:01,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1497382790, now seen corresponding path program 1 times [2021-11-23 13:44:01,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:01,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219488811] [2021-11-23 13:44:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:01,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:44:02,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:02,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219488811] [2021-11-23 13:44:02,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219488811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:02,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:02,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:02,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333538325] [2021-11-23 13:44:02,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:02,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:02,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:02,041 INFO L87 Difference]: Start difference. First operand 2439 states and 3326 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 13:44:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:02,374 INFO L93 Difference]: Finished difference Result 6464 states and 8673 transitions. [2021-11-23 13:44:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 59 [2021-11-23 13:44:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:02,400 INFO L225 Difference]: With dead ends: 6464 [2021-11-23 13:44:02,400 INFO L226 Difference]: Without dead ends: 4372 [2021-11-23 13:44:02,404 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 13:44:02,405 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 601 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:02,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 814 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states. [2021-11-23 13:44:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 4368. [2021-11-23 13:44:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4365 states have (on average 1.3218785796105383) internal successors, (5770), 4367 states have internal predecessors, (5770), 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 13:44:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 5770 transitions. [2021-11-23 13:44:02,743 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 5770 transitions. Word has length 59 [2021-11-23 13:44:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:02,743 INFO L470 AbstractCegarLoop]: Abstraction has 4368 states and 5770 transitions. [2021-11-23 13:44:02,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 13:44:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 5770 transitions. [2021-11-23 13:44:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 13:44:02,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:02,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:02,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:44:02,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1560732264, now seen corresponding path program 1 times [2021-11-23 13:44:02,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428620998] [2021-11-23 13:44:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:02,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:02,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:02,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428620998] [2021-11-23 13:44:02,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428620998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:02,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:02,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:02,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412537943] [2021-11-23 13:44:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:02,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:02,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:02,799 INFO L87 Difference]: Start difference. First operand 4368 states and 5770 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 13:44:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:03,333 INFO L93 Difference]: Finished difference Result 12238 states and 16024 transitions. [2021-11-23 13:44:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:44:03,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-23 13:44:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:03,368 INFO L225 Difference]: With dead ends: 12238 [2021-11-23 13:44:03,369 INFO L226 Difference]: Without dead ends: 8239 [2021-11-23 13:44:03,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 13:44:03,375 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 475 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:03,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2007 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8239 states. [2021-11-23 13:44:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8239 to 8235. [2021-11-23 13:44:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8235 states, 8232 states have (on average 1.2972546161321672) internal successors, (10679), 8234 states have internal predecessors, (10679), 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 13:44:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8235 states to 8235 states and 10679 transitions. [2021-11-23 13:44:04,000 INFO L78 Accepts]: Start accepts. Automaton has 8235 states and 10679 transitions. Word has length 61 [2021-11-23 13:44:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:04,001 INFO L470 AbstractCegarLoop]: Abstraction has 8235 states and 10679 transitions. [2021-11-23 13:44:04,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 13:44:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8235 states and 10679 transitions. [2021-11-23 13:44:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:04,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:04,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:04,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:44:04,004 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1057312421, now seen corresponding path program 1 times [2021-11-23 13:44:04,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:04,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553443359] [2021-11-23 13:44:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:04,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:04,029 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 13:44:04,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:04,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553443359] [2021-11-23 13:44:04,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553443359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:04,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:04,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:04,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818390604] [2021-11-23 13:44:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:04,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:04,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:04,032 INFO L87 Difference]: Start difference. First operand 8235 states and 10679 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:04,421 INFO L93 Difference]: Finished difference Result 8549 states and 11150 transitions. [2021-11-23 13:44:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:04,442 INFO L225 Difference]: With dead ends: 8549 [2021-11-23 13:44:04,442 INFO L226 Difference]: Without dead ends: 8235 [2021-11-23 13:44:04,445 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 13:44:04,446 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 473 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 837 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 13:44:04,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 837 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8235 states. [2021-11-23 13:44:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8235 to 8235. [2021-11-23 13:44:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8235 states, 8232 states have (on average 1.2971331389698737) internal successors, (10678), 8234 states have internal predecessors, (10678), 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 13:44:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8235 states to 8235 states and 10678 transitions. [2021-11-23 13:44:04,946 INFO L78 Accepts]: Start accepts. Automaton has 8235 states and 10678 transitions. Word has length 66 [2021-11-23 13:44:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:04,946 INFO L470 AbstractCegarLoop]: Abstraction has 8235 states and 10678 transitions. [2021-11-23 13:44:04,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 8235 states and 10678 transitions. [2021-11-23 13:44:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:04,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:04,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:04,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:44:04,950 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1259136355, now seen corresponding path program 1 times [2021-11-23 13:44:04,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:04,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618747270] [2021-11-23 13:44:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:04,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:04,984 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 13:44:04,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:04,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618747270] [2021-11-23 13:44:04,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618747270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:04,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:04,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:04,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235292881] [2021-11-23 13:44:04,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:04,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:04,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:04,988 INFO L87 Difference]: Start difference. First operand 8235 states and 10678 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:05,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:05,452 INFO L93 Difference]: Finished difference Result 8780 states and 11491 transitions. [2021-11-23 13:44:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:05,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:05,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:05,473 INFO L225 Difference]: With dead ends: 8780 [2021-11-23 13:44:05,473 INFO L226 Difference]: Without dead ends: 8470 [2021-11-23 13:44:05,476 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 13:44:05,477 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 600 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1052 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 13:44:05,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 1052 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8470 states. [2021-11-23 13:44:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8470 to 8468. [2021-11-23 13:44:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.3020673360897814) internal successors, (11022), 8467 states have internal predecessors, (11022), 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 13:44:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 11022 transitions. [2021-11-23 13:44:05,943 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 11022 transitions. Word has length 66 [2021-11-23 13:44:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:05,944 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 11022 transitions. [2021-11-23 13:44:05,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 11022 transitions. [2021-11-23 13:44:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:05,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:05,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:05,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:44:05,947 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1271067357, now seen corresponding path program 1 times [2021-11-23 13:44:05,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:05,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730263301] [2021-11-23 13:44:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:05,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:05,972 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 13:44:05,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:05,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730263301] [2021-11-23 13:44:05,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730263301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:05,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:05,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:05,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235894767] [2021-11-23 13:44:05,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:05,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:05,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:05,976 INFO L87 Difference]: Start difference. First operand 8468 states and 11022 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:06,403 INFO L93 Difference]: Finished difference Result 9010 states and 11829 transitions. [2021-11-23 13:44:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:06,429 INFO L225 Difference]: With dead ends: 9010 [2021-11-23 13:44:06,429 INFO L226 Difference]: Without dead ends: 8468 [2021-11-23 13:44:06,433 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 13:44:06,434 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 640 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 646 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 13:44:06,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 646 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2021-11-23 13:44:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 8468. [2021-11-23 13:44:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.3011222681630241) internal successors, (11014), 8467 states have internal predecessors, (11014), 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 13:44:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 11014 transitions. [2021-11-23 13:44:06,901 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 11014 transitions. Word has length 66 [2021-11-23 13:44:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:06,902 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 11014 transitions. [2021-11-23 13:44:06,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 11014 transitions. [2021-11-23 13:44:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:06,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:06,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:06,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:44:06,905 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1418259811, now seen corresponding path program 1 times [2021-11-23 13:44:06,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:06,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239012351] [2021-11-23 13:44:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:06,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:06,930 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 13:44:06,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:06,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239012351] [2021-11-23 13:44:06,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239012351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:06,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:06,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:06,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658424133] [2021-11-23 13:44:06,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:06,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:06,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:06,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:06,933 INFO L87 Difference]: Start difference. First operand 8468 states and 11014 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:07,445 INFO L93 Difference]: Finished difference Result 9511 states and 12551 transitions. [2021-11-23 13:44:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:07,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:07,468 INFO L225 Difference]: With dead ends: 9511 [2021-11-23 13:44:07,468 INFO L226 Difference]: Without dead ends: 8971 [2021-11-23 13:44:07,472 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 13:44:07,474 INFO L933 BasicCegarLoop]: 1028 mSDtfsCounter, 1278 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1417 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 13:44:07,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1417 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2021-11-23 13:44:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 8468. [2021-11-23 13:44:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.3007678676904904) internal successors, (11011), 8467 states have internal predecessors, (11011), 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 13:44:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 11011 transitions. [2021-11-23 13:44:07,956 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 11011 transitions. Word has length 66 [2021-11-23 13:44:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 11011 transitions. [2021-11-23 13:44:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 11011 transitions. [2021-11-23 13:44:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:07,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:07,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:07,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:44:07,960 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -974359137, now seen corresponding path program 1 times [2021-11-23 13:44:07,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:07,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437660463] [2021-11-23 13:44:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:07,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:07,985 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 13:44:07,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437660463] [2021-11-23 13:44:07,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437660463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:07,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:07,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:07,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904173793] [2021-11-23 13:44:07,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:07,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:07,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:07,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:07,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:07,988 INFO L87 Difference]: Start difference. First operand 8468 states and 11011 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:08,551 INFO L93 Difference]: Finished difference Result 9451 states and 12458 transitions. [2021-11-23 13:44:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:08,570 INFO L225 Difference]: With dead ends: 9451 [2021-11-23 13:44:08,571 INFO L226 Difference]: Without dead ends: 8912 [2021-11-23 13:44:08,575 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 13:44:08,575 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 1229 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:08,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 1330 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8912 states. [2021-11-23 13:44:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 8468. [2021-11-23 13:44:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.3004134672179564) internal successors, (11008), 8467 states have internal predecessors, (11008), 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 13:44:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 11008 transitions. [2021-11-23 13:44:09,118 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 11008 transitions. Word has length 66 [2021-11-23 13:44:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:09,118 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 11008 transitions. [2021-11-23 13:44:09,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 11008 transitions. [2021-11-23 13:44:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:09,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:09,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:09,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:44:09,121 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash 563980893, now seen corresponding path program 1 times [2021-11-23 13:44:09,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:09,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379848327] [2021-11-23 13:44:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:09,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:09,147 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 13:44:09,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:09,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379848327] [2021-11-23 13:44:09,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379848327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:09,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:09,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:09,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396897343] [2021-11-23 13:44:09,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:09,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:09,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:09,149 INFO L87 Difference]: Start difference. First operand 8468 states and 11008 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:09,825 INFO L93 Difference]: Finished difference Result 9447 states and 12445 transitions. [2021-11-23 13:44:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:09,842 INFO L225 Difference]: With dead ends: 9447 [2021-11-23 13:44:09,842 INFO L226 Difference]: Without dead ends: 8909 [2021-11-23 13:44:09,846 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 13:44:09,848 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1478 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:09,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1075 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:09,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2021-11-23 13:44:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 8468. [2021-11-23 13:44:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.3000590667454224) internal successors, (11005), 8467 states have internal predecessors, (11005), 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 13:44:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 11005 transitions. [2021-11-23 13:44:10,550 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 11005 transitions. Word has length 66 [2021-11-23 13:44:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:10,551 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 11005 transitions. [2021-11-23 13:44:10,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 11005 transitions. [2021-11-23 13:44:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:10,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:10,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:10,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:44:10,555 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1464605217, now seen corresponding path program 1 times [2021-11-23 13:44:10,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:10,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600269042] [2021-11-23 13:44:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:10,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:10,579 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 13:44:10,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600269042] [2021-11-23 13:44:10,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600269042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:10,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:10,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:10,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127765570] [2021-11-23 13:44:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:10,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:10,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:10,582 INFO L87 Difference]: Start difference. First operand 8468 states and 11005 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:11,318 INFO L93 Difference]: Finished difference Result 9005 states and 11789 transitions. [2021-11-23 13:44:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:11,338 INFO L225 Difference]: With dead ends: 9005 [2021-11-23 13:44:11,338 INFO L226 Difference]: Without dead ends: 8468 [2021-11-23 13:44:11,342 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 13:44:11,343 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 576 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:11,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 661 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2021-11-23 13:44:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 8468. [2021-11-23 13:44:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.2979326639102184) internal successors, (10987), 8467 states have internal predecessors, (10987), 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 13:44:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 10987 transitions. [2021-11-23 13:44:11,939 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 10987 transitions. Word has length 66 [2021-11-23 13:44:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:11,939 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 10987 transitions. [2021-11-23 13:44:11,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 10987 transitions. [2021-11-23 13:44:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:11,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:11,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:11,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:44:11,942 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1812383008, now seen corresponding path program 1 times [2021-11-23 13:44:11,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:11,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665980804] [2021-11-23 13:44:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:11,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:11,967 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 13:44:11,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:11,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665980804] [2021-11-23 13:44:11,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665980804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:11,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:11,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:11,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700509595] [2021-11-23 13:44:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:11,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:11,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:11,970 INFO L87 Difference]: Start difference. First operand 8468 states and 10987 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:12,670 INFO L93 Difference]: Finished difference Result 9445 states and 12384 transitions. [2021-11-23 13:44:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:12,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:12,679 INFO L225 Difference]: With dead ends: 9445 [2021-11-23 13:44:12,679 INFO L226 Difference]: Without dead ends: 8909 [2021-11-23 13:44:12,683 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 13:44:12,684 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1197 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:12,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1284 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2021-11-23 13:44:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 8468. [2021-11-23 13:44:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8465 states have (on average 1.2975782634376847) internal successors, (10984), 8467 states have internal predecessors, (10984), 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 13:44:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 10984 transitions. [2021-11-23 13:44:13,352 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 10984 transitions. Word has length 66 [2021-11-23 13:44:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:13,352 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 10984 transitions. [2021-11-23 13:44:13,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 13:44:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 10984 transitions. [2021-11-23 13:44:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:44:13,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:13,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:13,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:44:13,357 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:13,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1796864290, now seen corresponding path program 1 times [2021-11-23 13:44:13,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:13,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165920695] [2021-11-23 13:44:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:13,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:13,383 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 13:44:13,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:13,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165920695] [2021-11-23 13:44:13,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165920695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:13,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:13,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:13,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948668133] [2021-11-23 13:44:13,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:13,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:13,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:13,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:13,385 INFO L87 Difference]: Start difference. First operand 8468 states and 10984 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:13,949 INFO L93 Difference]: Finished difference Result 9480 states and 12418 transitions. [2021-11-23 13:44:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:13,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2021-11-23 13:44:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:13,959 INFO L225 Difference]: With dead ends: 9480 [2021-11-23 13:44:13,959 INFO L226 Difference]: Without dead ends: 8946 [2021-11-23 13:44:13,962 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 13:44:13,962 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 584 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:13,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 981 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8946 states. [2021-11-23 13:44:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8946 to 8892. [2021-11-23 13:44:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8892 states, 8889 states have (on average 1.3018337270784115) internal successors, (11572), 8891 states have internal predecessors, (11572), 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 13:44:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8892 states to 8892 states and 11572 transitions. [2021-11-23 13:44:14,492 INFO L78 Accepts]: Start accepts. Automaton has 8892 states and 11572 transitions. Word has length 66 [2021-11-23 13:44:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:14,492 INFO L470 AbstractCegarLoop]: Abstraction has 8892 states and 11572 transitions. [2021-11-23 13:44:14,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 13:44:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8892 states and 11572 transitions. [2021-11-23 13:44:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 13:44:14,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:14,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:14,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:44:14,496 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1984170600, now seen corresponding path program 1 times [2021-11-23 13:44:14,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:14,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777060069] [2021-11-23 13:44:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:14,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:14,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:14,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777060069] [2021-11-23 13:44:14,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777060069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:14,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:14,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:14,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192815757] [2021-11-23 13:44:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:14,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:14,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:14,536 INFO L87 Difference]: Start difference. First operand 8892 states and 11572 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 13:44:15,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:15,116 INFO L93 Difference]: Finished difference Result 16297 states and 21155 transitions. [2021-11-23 13:44:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:44:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2021-11-23 13:44:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:15,125 INFO L225 Difference]: With dead ends: 16297 [2021-11-23 13:44:15,125 INFO L226 Difference]: Without dead ends: 8596 [2021-11-23 13:44:15,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 13:44:15,136 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 465 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:15,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 2021 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:15,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2021-11-23 13:44:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8583. [2021-11-23 13:44:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8583 states, 8580 states have (on average 1.2843822843822843) internal successors, (11020), 8582 states have internal predecessors, (11020), 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 13:44:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 11020 transitions. [2021-11-23 13:44:15,611 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 11020 transitions. Word has length 68 [2021-11-23 13:44:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:15,611 INFO L470 AbstractCegarLoop]: Abstraction has 8583 states and 11020 transitions. [2021-11-23 13:44:15,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 13:44:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 11020 transitions. [2021-11-23 13:44:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 13:44:15,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:15,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-23 13:44:15,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:44:15,648 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash 693331328, now seen corresponding path program 1 times [2021-11-23 13:44:15,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:15,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156924532] [2021-11-23 13:44:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:15,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:44:15,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:15,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156924532] [2021-11-23 13:44:15,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156924532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:15,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:15,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:44:15,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403474247] [2021-11-23 13:44:15,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:15,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:15,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:15,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:15,723 INFO L87 Difference]: Start difference. First operand 8583 states and 11020 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 13:44:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:16,161 INFO L93 Difference]: Finished difference Result 13977 states and 17840 transitions. [2021-11-23 13:44:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:44:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 103 [2021-11-23 13:44:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:16,169 INFO L225 Difference]: With dead ends: 13977 [2021-11-23 13:44:16,169 INFO L226 Difference]: Without dead ends: 6441 [2021-11-23 13:44:16,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:44:16,178 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 217 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:16,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 2391 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6441 states. [2021-11-23 13:44:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6441 to 5768. [2021-11-23 13:44:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5765 states have (on average 1.2893321769297486) internal successors, (7433), 5767 states have internal predecessors, (7433), 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 13:44:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7433 transitions. [2021-11-23 13:44:16,494 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7433 transitions. Word has length 103 [2021-11-23 13:44:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:16,495 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 7433 transitions. [2021-11-23 13:44:16,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 13:44:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7433 transitions. [2021-11-23 13:44:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:16,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:16,498 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:16,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 13:44:16,499 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:16,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -857559522, now seen corresponding path program 1 times [2021-11-23 13:44:16,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:16,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142544767] [2021-11-23 13:44:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:16,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:16,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:16,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142544767] [2021-11-23 13:44:16,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142544767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:16,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:16,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:44:16,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906779170] [2021-11-23 13:44:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:16,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:16,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:16,534 INFO L87 Difference]: Start difference. First operand 5768 states and 7433 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:17,026 INFO L93 Difference]: Finished difference Result 7627 states and 10049 transitions. [2021-11-23 13:44:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:44:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:17,034 INFO L225 Difference]: With dead ends: 7627 [2021-11-23 13:44:17,034 INFO L226 Difference]: Without dead ends: 6673 [2021-11-23 13:44:17,037 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 13:44:17,037 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1442 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:17,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 2908 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2021-11-23 13:44:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 5801. [2021-11-23 13:44:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5798 states have (on average 1.2859606760952051) internal successors, (7456), 5800 states have internal predecessors, (7456), 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 13:44:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 7456 transitions. [2021-11-23 13:44:17,500 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 7456 transitions. Word has length 106 [2021-11-23 13:44:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:17,500 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 7456 transitions. [2021-11-23 13:44:17,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 7456 transitions. [2021-11-23 13:44:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:17,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:17,505 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:17,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 13:44:17,505 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1126828194, now seen corresponding path program 1 times [2021-11-23 13:44:17,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:17,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615226842] [2021-11-23 13:44:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:17,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:17,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615226842] [2021-11-23 13:44:17,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615226842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:17,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:17,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:44:17,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238506452] [2021-11-23 13:44:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:17,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:17,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:17,544 INFO L87 Difference]: Start difference. First operand 5801 states and 7456 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:18,199 INFO L93 Difference]: Finished difference Result 8398 states and 11055 transitions. [2021-11-23 13:44:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:44:18,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:18,210 INFO L225 Difference]: With dead ends: 8398 [2021-11-23 13:44:18,211 INFO L226 Difference]: Without dead ends: 7418 [2021-11-23 13:44:18,214 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 13:44:18,214 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1304 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:18,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 3047 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7418 states. [2021-11-23 13:44:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7418 to 5864. [2021-11-23 13:44:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5861 states have (on average 1.2828868793721209) internal successors, (7519), 5863 states have internal predecessors, (7519), 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 13:44:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7519 transitions. [2021-11-23 13:44:18,741 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7519 transitions. Word has length 106 [2021-11-23 13:44:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:18,741 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 7519 transitions. [2021-11-23 13:44:18,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7519 transitions. [2021-11-23 13:44:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:18,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:18,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:18,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 13:44:18,745 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1855493670, now seen corresponding path program 1 times [2021-11-23 13:44:18,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454209549] [2021-11-23 13:44:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:18,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:18,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:18,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454209549] [2021-11-23 13:44:18,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454209549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:18,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:18,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:44:18,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506688510] [2021-11-23 13:44:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:18,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:18,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:18,785 INFO L87 Difference]: Start difference. First operand 5864 states and 7519 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:19,273 INFO L93 Difference]: Finished difference Result 7715 states and 10032 transitions. [2021-11-23 13:44:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:44:19,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:19,281 INFO L225 Difference]: With dead ends: 7715 [2021-11-23 13:44:19,281 INFO L226 Difference]: Without dead ends: 6682 [2021-11-23 13:44:19,284 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 13:44:19,284 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1033 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:19,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 2109 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6682 states. [2021-11-23 13:44:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6682 to 5876. [2021-11-23 13:44:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5873 states have (on average 1.2794142686872128) internal successors, (7514), 5875 states have internal predecessors, (7514), 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 13:44:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7514 transitions. [2021-11-23 13:44:19,664 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7514 transitions. Word has length 106 [2021-11-23 13:44:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:19,664 INFO L470 AbstractCegarLoop]: Abstraction has 5876 states and 7514 transitions. [2021-11-23 13:44:19,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7514 transitions. [2021-11-23 13:44:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:19,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:19,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:19,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 13:44:19,667 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1028691626, now seen corresponding path program 1 times [2021-11-23 13:44:19,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:19,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220794750] [2021-11-23 13:44:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:19,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:19,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220794750] [2021-11-23 13:44:19,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220794750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:19,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:19,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:44:19,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350219351] [2021-11-23 13:44:19,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:19,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:19,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:19,703 INFO L87 Difference]: Start difference. First operand 5876 states and 7514 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:20,222 INFO L93 Difference]: Finished difference Result 8295 states and 10784 transitions. [2021-11-23 13:44:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:44:20,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:20,228 INFO L225 Difference]: With dead ends: 8295 [2021-11-23 13:44:20,228 INFO L226 Difference]: Without dead ends: 7257 [2021-11-23 13:44:20,230 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 13:44:20,231 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 976 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:20,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2825 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7257 states. [2021-11-23 13:44:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7257 to 5939. [2021-11-23 13:44:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5936 states have (on average 1.2764487870619947) internal successors, (7577), 5938 states have internal predecessors, (7577), 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 13:44:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7577 transitions. [2021-11-23 13:44:20,581 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7577 transitions. Word has length 106 [2021-11-23 13:44:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:20,581 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7577 transitions. [2021-11-23 13:44:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 13:44:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7577 transitions. [2021-11-23 13:44:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:20,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:20,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:20,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 13:44:20,585 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash -657488212, now seen corresponding path program 1 times [2021-11-23 13:44:20,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:20,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658545150] [2021-11-23 13:44:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:20,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:20,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658545150] [2021-11-23 13:44:20,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658545150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:20,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:20,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:20,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121469369] [2021-11-23 13:44:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:20,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:20,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:20,617 INFO L87 Difference]: Start difference. First operand 5939 states and 7577 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 13:44:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:20,957 INFO L93 Difference]: Finished difference Result 7075 states and 9077 transitions. [2021-11-23 13:44:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:20,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 13:44:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:20,963 INFO L225 Difference]: With dead ends: 7075 [2021-11-23 13:44:20,963 INFO L226 Difference]: Without dead ends: 5939 [2021-11-23 13:44:20,966 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 13:44:20,966 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 612 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 13:44:20,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 612 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2021-11-23 13:44:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5939. [2021-11-23 13:44:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5936 states have (on average 1.2740902964959568) internal successors, (7563), 5938 states have internal predecessors, (7563), 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 13:44:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7563 transitions. [2021-11-23 13:44:21,307 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7563 transitions. Word has length 106 [2021-11-23 13:44:21,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:21,307 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7563 transitions. [2021-11-23 13:44:21,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 13:44:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7563 transitions. [2021-11-23 13:44:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:21,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:21,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:21,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 13:44:21,310 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1304086446, now seen corresponding path program 1 times [2021-11-23 13:44:21,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:21,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850536516] [2021-11-23 13:44:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:21,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:21,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:21,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850536516] [2021-11-23 13:44:21,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850536516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:21,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:21,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:21,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958759816] [2021-11-23 13:44:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:21,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:21,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:21,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:21,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:21,342 INFO L87 Difference]: Start difference. First operand 5939 states and 7563 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:21,697 INFO L93 Difference]: Finished difference Result 7032 states and 8999 transitions. [2021-11-23 13:44:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:21,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:21,703 INFO L225 Difference]: With dead ends: 7032 [2021-11-23 13:44:21,704 INFO L226 Difference]: Without dead ends: 5939 [2021-11-23 13:44:21,706 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 13:44:21,706 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 604 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 13:44:21,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2021-11-23 13:44:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5939. [2021-11-23 13:44:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5936 states have (on average 1.2725741239892183) internal successors, (7554), 5938 states have internal predecessors, (7554), 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 13:44:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7554 transitions. [2021-11-23 13:44:22,148 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7554 transitions. Word has length 106 [2021-11-23 13:44:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:22,149 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7554 transitions. [2021-11-23 13:44:22,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7554 transitions. [2021-11-23 13:44:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:22,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:22,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:22,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 13:44:22,151 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1505910380, now seen corresponding path program 1 times [2021-11-23 13:44:22,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:22,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320385620] [2021-11-23 13:44:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:22,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:22,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:22,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320385620] [2021-11-23 13:44:22,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320385620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:22,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:22,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:22,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485226573] [2021-11-23 13:44:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:22,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:22,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:22,184 INFO L87 Difference]: Start difference. First operand 5939 states and 7554 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:22,744 INFO L93 Difference]: Finished difference Result 7987 states and 10230 transitions. [2021-11-23 13:44:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:22,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:22,751 INFO L225 Difference]: With dead ends: 7987 [2021-11-23 13:44:22,752 INFO L226 Difference]: Without dead ends: 6895 [2021-11-23 13:44:22,754 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 13:44:22,755 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1422 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:22,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 1029 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:44:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2021-11-23 13:44:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 5912. [2021-11-23 13:44:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5912 states, 5909 states have (on average 1.2692502961584025) internal successors, (7500), 5911 states have internal predecessors, (7500), 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 13:44:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 7500 transitions. [2021-11-23 13:44:23,118 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 7500 transitions. Word has length 106 [2021-11-23 13:44:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:23,118 INFO L470 AbstractCegarLoop]: Abstraction has 5912 states and 7500 transitions. [2021-11-23 13:44:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 7500 transitions. [2021-11-23 13:44:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:23,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:23,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:23,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 13:44:23,121 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2066610158, now seen corresponding path program 1 times [2021-11-23 13:44:23,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:23,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870428216] [2021-11-23 13:44:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:23,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:23,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:23,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870428216] [2021-11-23 13:44:23,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870428216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:23,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:23,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:23,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822646787] [2021-11-23 13:44:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:23,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:23,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:23,177 INFO L87 Difference]: Start difference. First operand 5912 states and 7500 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:23,647 INFO L93 Difference]: Finished difference Result 7834 states and 9974 transitions. [2021-11-23 13:44:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:23,654 INFO L225 Difference]: With dead ends: 7834 [2021-11-23 13:44:23,654 INFO L226 Difference]: Without dead ends: 6760 [2021-11-23 13:44:23,657 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 13:44:23,657 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1355 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:23,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 943 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6760 states. [2021-11-23 13:44:24,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6760 to 5861. [2021-11-23 13:44:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5861 states, 5858 states have (on average 1.2642540116080574) internal successors, (7406), 5860 states have internal predecessors, (7406), 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 13:44:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5861 states to 5861 states and 7406 transitions. [2021-11-23 13:44:24,026 INFO L78 Accepts]: Start accepts. Automaton has 5861 states and 7406 transitions. Word has length 106 [2021-11-23 13:44:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:24,026 INFO L470 AbstractCegarLoop]: Abstraction has 5861 states and 7406 transitions. [2021-11-23 13:44:24,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 13:44:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5861 states and 7406 transitions. [2021-11-23 13:44:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:24,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:24,029 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:24,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 13:44:24,029 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:24,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1198322095, now seen corresponding path program 1 times [2021-11-23 13:44:24,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:24,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927102825] [2021-11-23 13:44:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:24,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:24,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:24,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927102825] [2021-11-23 13:44:24,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927102825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:24,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:24,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:24,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964774947] [2021-11-23 13:44:24,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:24,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:24,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:24,065 INFO L87 Difference]: Start difference. First operand 5861 states and 7406 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 13:44:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:24,551 INFO L93 Difference]: Finished difference Result 7781 states and 9808 transitions. [2021-11-23 13:44:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:24,551 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 13:44:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:24,557 INFO L225 Difference]: With dead ends: 7781 [2021-11-23 13:44:24,557 INFO L226 Difference]: Without dead ends: 6768 [2021-11-23 13:44:24,560 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 13:44:24,560 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 453 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:24,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 930 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2021-11-23 13:44:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6682. [2021-11-23 13:44:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 6679 states have (on average 1.2594699805360083) internal successors, (8412), 6681 states have internal predecessors, (8412), 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 13:44:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 8412 transitions. [2021-11-23 13:44:24,986 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 8412 transitions. Word has length 106 [2021-11-23 13:44:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:24,987 INFO L470 AbstractCegarLoop]: Abstraction has 6682 states and 8412 transitions. [2021-11-23 13:44:24,987 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 13:44:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 8412 transitions. [2021-11-23 13:44:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:44:24,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:24,989 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-23 13:44:24,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 13:44:24,990 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2145124887, now seen corresponding path program 1 times [2021-11-23 13:44:24,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:24,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060536158] [2021-11-23 13:44:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:24,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-23 13:44:25,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:25,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060536158] [2021-11-23 13:44:25,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060536158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:25,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:25,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:25,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770370752] [2021-11-23 13:44:25,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:25,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:25,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:25,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:25,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:25,015 INFO L87 Difference]: Start difference. First operand 6682 states and 8412 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:44:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:25,457 INFO L93 Difference]: Finished difference Result 10997 states and 13925 transitions. [2021-11-23 13:44:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:44:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:25,464 INFO L225 Difference]: With dead ends: 10997 [2021-11-23 13:44:25,464 INFO L226 Difference]: Without dead ends: 6483 [2021-11-23 13:44:25,469 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 13:44:25,470 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 174 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 990 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 13:44:25,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 990 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2021-11-23 13:44:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 6483. [2021-11-23 13:44:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6483 states, 6480 states have (on average 1.2623456790123457) internal successors, (8180), 6482 states have internal predecessors, (8180), 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 13:44:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 8180 transitions. [2021-11-23 13:44:25,894 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 8180 transitions. Word has length 106 [2021-11-23 13:44:25,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:25,894 INFO L470 AbstractCegarLoop]: Abstraction has 6483 states and 8180 transitions. [2021-11-23 13:44:25,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:44:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 8180 transitions. [2021-11-23 13:44:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:44:25,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:25,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:25,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 13:44:25,897 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1764709930, now seen corresponding path program 1 times [2021-11-23 13:44:25,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:25,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300681619] [2021-11-23 13:44:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:25,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:25,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:25,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300681619] [2021-11-23 13:44:25,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300681619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:25,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:25,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:25,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77517170] [2021-11-23 13:44:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:25,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:25,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:25,931 INFO L87 Difference]: Start difference. First operand 6483 states and 8180 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 13:44:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:26,507 INFO L93 Difference]: Finished difference Result 9857 states and 12367 transitions. [2021-11-23 13:44:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:26,508 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 13:44:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:26,515 INFO L225 Difference]: With dead ends: 9857 [2021-11-23 13:44:26,515 INFO L226 Difference]: Without dead ends: 8023 [2021-11-23 13:44:26,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:26,520 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 437 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1034 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 13:44:26,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1034 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2021-11-23 13:44:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 8021. [2021-11-23 13:44:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8021 states, 8018 states have (on average 1.2548016961835868) internal successors, (10061), 8020 states have internal predecessors, (10061), 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 13:44:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 10061 transitions. [2021-11-23 13:44:27,078 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 10061 transitions. Word has length 107 [2021-11-23 13:44:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:27,078 INFO L470 AbstractCegarLoop]: Abstraction has 8021 states and 10061 transitions. [2021-11-23 13:44:27,078 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 13:44:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 10061 transitions. [2021-11-23 13:44:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:44:27,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:27,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:27,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 13:44:27,082 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash -632760600, now seen corresponding path program 1 times [2021-11-23 13:44:27,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:27,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754155902] [2021-11-23 13:44:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:27,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:27,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754155902] [2021-11-23 13:44:27,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754155902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:27,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:27,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:27,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546958834] [2021-11-23 13:44:27,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:27,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:27,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:27,103 INFO L87 Difference]: Start difference. First operand 8021 states and 10061 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 13:44:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:27,620 INFO L93 Difference]: Finished difference Result 11343 states and 14170 transitions. [2021-11-23 13:44:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:27,621 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 107 [2021-11-23 13:44:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:27,629 INFO L225 Difference]: With dead ends: 11343 [2021-11-23 13:44:27,629 INFO L226 Difference]: Without dead ends: 7971 [2021-11-23 13:44:27,633 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 13:44:27,634 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 399 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 762 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 13:44:27,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 762 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7971 states. [2021-11-23 13:44:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7971 to 7971. [2021-11-23 13:44:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7971 states, 7968 states have (on average 1.2553965863453815) internal successors, (10003), 7970 states have internal predecessors, (10003), 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 13:44:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 10003 transitions. [2021-11-23 13:44:28,242 INFO L78 Accepts]: Start accepts. Automaton has 7971 states and 10003 transitions. Word has length 107 [2021-11-23 13:44:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:28,242 INFO L470 AbstractCegarLoop]: Abstraction has 7971 states and 10003 transitions. [2021-11-23 13:44:28,242 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 13:44:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7971 states and 10003 transitions. [2021-11-23 13:44:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:44:28,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:28,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-23 13:44:28,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 13:44:28,245 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash -944860604, now seen corresponding path program 1 times [2021-11-23 13:44:28,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:28,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103112550] [2021-11-23 13:44:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:28,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:44:28,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:28,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103112550] [2021-11-23 13:44:28,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103112550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:28,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:28,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:28,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903548306] [2021-11-23 13:44:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:28,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:28,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:28,283 INFO L87 Difference]: Start difference. First operand 7971 states and 10003 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 13:44:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:29,115 INFO L93 Difference]: Finished difference Result 13243 states and 16653 transitions. [2021-11-23 13:44:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 13:44:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:29,125 INFO L225 Difference]: With dead ends: 13243 [2021-11-23 13:44:29,125 INFO L226 Difference]: Without dead ends: 8752 [2021-11-23 13:44:29,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:44:29,131 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1112 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:29,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 781 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8752 states. [2021-11-23 13:44:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8752 to 7984. [2021-11-23 13:44:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7984 states, 7981 states have (on average 1.2470868312241574) internal successors, (9953), 7983 states have internal predecessors, (9953), 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 13:44:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7984 states to 7984 states and 9953 transitions. [2021-11-23 13:44:29,695 INFO L78 Accepts]: Start accepts. Automaton has 7984 states and 9953 transitions. Word has length 107 [2021-11-23 13:44:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:29,695 INFO L470 AbstractCegarLoop]: Abstraction has 7984 states and 9953 transitions. [2021-11-23 13:44:29,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 13:44:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7984 states and 9953 transitions. [2021-11-23 13:44:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 13:44:29,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:29,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:29,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 13:44:29,698 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1127967466, now seen corresponding path program 1 times [2021-11-23 13:44:29,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:29,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296902600] [2021-11-23 13:44:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:29,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:29,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:29,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296902600] [2021-11-23 13:44:29,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296902600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:29,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:29,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:29,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061571424] [2021-11-23 13:44:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:29,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:29,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:29,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:29,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:29,733 INFO L87 Difference]: Start difference. First operand 7984 states and 9953 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 13:44:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:30,579 INFO L93 Difference]: Finished difference Result 14037 states and 17434 transitions. [2021-11-23 13:44:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:30,580 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 13:44:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:30,590 INFO L225 Difference]: With dead ends: 14037 [2021-11-23 13:44:30,590 INFO L226 Difference]: Without dead ends: 10715 [2021-11-23 13:44:30,595 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 13:44:30,596 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 440 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 988 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 13:44:30,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 988 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10715 states. [2021-11-23 13:44:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10715 to 10713. [2021-11-23 13:44:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10713 states, 10710 states have (on average 1.2414565826330533) internal successors, (13296), 10712 states have internal predecessors, (13296), 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 13:44:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10713 states to 10713 states and 13296 transitions. [2021-11-23 13:44:31,355 INFO L78 Accepts]: Start accepts. Automaton has 10713 states and 13296 transitions. Word has length 108 [2021-11-23 13:44:31,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:31,355 INFO L470 AbstractCegarLoop]: Abstraction has 10713 states and 13296 transitions. [2021-11-23 13:44:31,355 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-11-23 13:44:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 10713 states and 13296 transitions. [2021-11-23 13:44:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 13:44:31,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:31,358 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:31,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 13:44:31,359 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash 769529300, now seen corresponding path program 1 times [2021-11-23 13:44:31,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:31,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891018408] [2021-11-23 13:44:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:31,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:31,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891018408] [2021-11-23 13:44:31,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891018408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:31,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:31,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:31,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011974603] [2021-11-23 13:44:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:31,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:31,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:31,379 INFO L87 Difference]: Start difference. First operand 10713 states and 13296 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 13:44:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:32,173 INFO L93 Difference]: Finished difference Result 16715 states and 20693 transitions. [2021-11-23 13:44:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:32,173 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 108 [2021-11-23 13:44:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:32,183 INFO L225 Difference]: With dead ends: 16715 [2021-11-23 13:44:32,183 INFO L226 Difference]: Without dead ends: 10664 [2021-11-23 13:44:32,189 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 13:44:32,189 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 397 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 759 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 13:44:32,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 759 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10664 states. [2021-11-23 13:44:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10664 to 10664. [2021-11-23 13:44:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10664 states, 10661 states have (on average 1.2419097645624237) internal successors, (13240), 10663 states have internal predecessors, (13240), 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 13:44:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10664 states to 10664 states and 13240 transitions. [2021-11-23 13:44:33,018 INFO L78 Accepts]: Start accepts. Automaton has 10664 states and 13240 transitions. Word has length 108 [2021-11-23 13:44:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:33,018 INFO L470 AbstractCegarLoop]: Abstraction has 10664 states and 13240 transitions. [2021-11-23 13:44:33,018 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 13:44:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10664 states and 13240 transitions. [2021-11-23 13:44:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 13:44:33,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:33,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:33,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 13:44:33,022 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash 950403779, now seen corresponding path program 1 times [2021-11-23 13:44:33,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:33,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402578120] [2021-11-23 13:44:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:33,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:33,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402578120] [2021-11-23 13:44:33,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402578120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:33,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:33,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:33,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871490193] [2021-11-23 13:44:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:33,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:33,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:33,059 INFO L87 Difference]: Start difference. First operand 10664 states and 13240 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 13:44:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:34,351 INFO L93 Difference]: Finished difference Result 21846 states and 26959 transitions. [2021-11-23 13:44:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 109 [2021-11-23 13:44:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:34,372 INFO L225 Difference]: With dead ends: 21846 [2021-11-23 13:44:34,372 INFO L226 Difference]: Without dead ends: 13180 [2021-11-23 13:44:34,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:44:34,380 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 1099 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:34,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 1247 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2021-11-23 13:44:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 13180. [2021-11-23 13:44:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 13177 states have (on average 1.2282765424603477) internal successors, (16185), 13179 states have internal predecessors, (16185), 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 13:44:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 16185 transitions. [2021-11-23 13:44:35,531 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 16185 transitions. Word has length 109 [2021-11-23 13:44:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:35,531 INFO L470 AbstractCegarLoop]: Abstraction has 13180 states and 16185 transitions. [2021-11-23 13:44:35,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 13:44:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 16185 transitions. [2021-11-23 13:44:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 13:44:35,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:35,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-23 13:44:35,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 13:44:35,535 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash -493255838, now seen corresponding path program 1 times [2021-11-23 13:44:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:35,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879916216] [2021-11-23 13:44:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:35,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:35,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:35,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879916216] [2021-11-23 13:44:35,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879916216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:35,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:35,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:35,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791075382] [2021-11-23 13:44:35,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:35,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:35,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:35,562 INFO L87 Difference]: Start difference. First operand 13180 states and 16185 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 13:44:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:36,542 INFO L93 Difference]: Finished difference Result 17365 states and 21460 transitions. [2021-11-23 13:44:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-11-23 13:44:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:36,556 INFO L225 Difference]: With dead ends: 17365 [2021-11-23 13:44:36,557 INFO L226 Difference]: Without dead ends: 12861 [2021-11-23 13:44:36,562 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 13:44:36,563 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 113 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:36,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1153 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12861 states. [2021-11-23 13:44:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12861 to 12804. [2021-11-23 13:44:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12804 states, 12801 states have (on average 1.2226388563393484) internal successors, (15651), 12803 states have internal predecessors, (15651), 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 13:44:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12804 states to 12804 states and 15651 transitions. [2021-11-23 13:44:37,586 INFO L78 Accepts]: Start accepts. Automaton has 12804 states and 15651 transitions. Word has length 110 [2021-11-23 13:44:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:37,586 INFO L470 AbstractCegarLoop]: Abstraction has 12804 states and 15651 transitions. [2021-11-23 13:44:37,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 13:44:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12804 states and 15651 transitions. [2021-11-23 13:44:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 13:44:37,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:37,589 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-23 13:44:37,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 13:44:37,589 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1074612414, now seen corresponding path program 1 times [2021-11-23 13:44:37,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:37,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690955383] [2021-11-23 13:44:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:37,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:44:37,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:37,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690955383] [2021-11-23 13:44:37,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690955383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:37,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:37,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:37,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062708577] [2021-11-23 13:44:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:37,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:37,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:37,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:37,627 INFO L87 Difference]: Start difference. First operand 12804 states and 15651 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 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 13:44:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:38,698 INFO L93 Difference]: Finished difference Result 18019 states and 22057 transitions. [2021-11-23 13:44:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 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 111 [2021-11-23 13:44:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:38,713 INFO L225 Difference]: With dead ends: 18019 [2021-11-23 13:44:38,713 INFO L226 Difference]: Without dead ends: 13894 [2021-11-23 13:44:38,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:44:38,719 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1143 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:38,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 781 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13894 states. [2021-11-23 13:44:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13894 to 12791. [2021-11-23 13:44:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12791 states, 12788 states have (on average 1.2155145448858304) internal successors, (15544), 12790 states have internal predecessors, (15544), 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 13:44:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12791 states to 12791 states and 15544 transitions. [2021-11-23 13:44:39,784 INFO L78 Accepts]: Start accepts. Automaton has 12791 states and 15544 transitions. Word has length 111 [2021-11-23 13:44:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:39,785 INFO L470 AbstractCegarLoop]: Abstraction has 12791 states and 15544 transitions. [2021-11-23 13:44:39,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 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 13:44:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 12791 states and 15544 transitions. [2021-11-23 13:44:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 13:44:39,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:39,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:39,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 13:44:39,789 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1760853149, now seen corresponding path program 1 times [2021-11-23 13:44:39,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663371154] [2021-11-23 13:44:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:39,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:44:39,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:39,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663371154] [2021-11-23 13:44:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663371154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:39,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:39,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:39,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799663210] [2021-11-23 13:44:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:39,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:39,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:39,825 INFO L87 Difference]: Start difference. First operand 12791 states and 15544 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 13:44:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:40,963 INFO L93 Difference]: Finished difference Result 19197 states and 23299 transitions. [2021-11-23 13:44:40,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:40,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 129 [2021-11-23 13:44:40,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:40,979 INFO L225 Difference]: With dead ends: 19197 [2021-11-23 13:44:40,980 INFO L226 Difference]: Without dead ends: 15085 [2021-11-23 13:44:40,985 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 13:44:40,986 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 496 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:40,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 793 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:40,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15085 states. [2021-11-23 13:44:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15085 to 15081. [2021-11-23 13:44:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15081 states, 15078 states have (on average 1.209908475925189) internal successors, (18243), 15080 states have internal predecessors, (18243), 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 13:44:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15081 states to 15081 states and 18243 transitions. [2021-11-23 13:44:42,282 INFO L78 Accepts]: Start accepts. Automaton has 15081 states and 18243 transitions. Word has length 129 [2021-11-23 13:44:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:42,282 INFO L470 AbstractCegarLoop]: Abstraction has 15081 states and 18243 transitions. [2021-11-23 13:44:42,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 13:44:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15081 states and 18243 transitions. [2021-11-23 13:44:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 13:44:42,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:42,286 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:42,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 13:44:42,287 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash -775925754, now seen corresponding path program 1 times [2021-11-23 13:44:42,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:42,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255771260] [2021-11-23 13:44:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:42,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:42,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:42,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255771260] [2021-11-23 13:44:42,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255771260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:42,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:42,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:42,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846246507] [2021-11-23 13:44:42,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:42,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:42,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:42,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:42,324 INFO L87 Difference]: Start difference. First operand 15081 states and 18243 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 13:44:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:43,946 INFO L93 Difference]: Finished difference Result 26195 states and 31685 transitions. [2021-11-23 13:44:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 140 [2021-11-23 13:44:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:43,965 INFO L225 Difference]: With dead ends: 26195 [2021-11-23 13:44:43,965 INFO L226 Difference]: Without dead ends: 17662 [2021-11-23 13:44:43,971 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 13:44:43,972 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 414 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:43,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 897 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17662 states. [2021-11-23 13:44:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17662 to 17614. [2021-11-23 13:44:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17611 states have (on average 1.2045312588722956) internal successors, (21213), 17613 states have internal predecessors, (21213), 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 13:44:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 21213 transitions. [2021-11-23 13:44:45,463 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 21213 transitions. Word has length 140 [2021-11-23 13:44:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:45,463 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 21213 transitions. [2021-11-23 13:44:45,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 13:44:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 21213 transitions. [2021-11-23 13:44:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 13:44:45,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:45,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:45,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 13:44:45,470 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1447846783, now seen corresponding path program 1 times [2021-11-23 13:44:45,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:45,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297139420] [2021-11-23 13:44:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:45,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:45,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:45,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297139420] [2021-11-23 13:44:45,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297139420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:45,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:45,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:45,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972652312] [2021-11-23 13:44:45,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:45,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:45,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:45,506 INFO L87 Difference]: Start difference. First operand 17614 states and 21213 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 13:44:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:46,979 INFO L93 Difference]: Finished difference Result 26164 states and 31588 transitions. [2021-11-23 13:44:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:46,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2021-11-23 13:44:46,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:46,996 INFO L225 Difference]: With dead ends: 26164 [2021-11-23 13:44:46,996 INFO L226 Difference]: Without dead ends: 17646 [2021-11-23 13:44:47,004 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 13:44:47,004 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 304 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:47,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 1342 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17646 states. [2021-11-23 13:44:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17646 to 17614. [2021-11-23 13:44:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17611 states have (on average 1.1927204588041564) internal successors, (21005), 17613 states have internal predecessors, (21005), 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 13:44:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 21005 transitions. [2021-11-23 13:44:48,400 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 21005 transitions. Word has length 158 [2021-11-23 13:44:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:48,401 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 21005 transitions. [2021-11-23 13:44:48,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 13:44:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 21005 transitions. [2021-11-23 13:44:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 13:44:48,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:48,407 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:48,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 13:44:48,408 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash -765798053, now seen corresponding path program 1 times [2021-11-23 13:44:48,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:48,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590629864] [2021-11-23 13:44:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:48,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:48,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:48,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590629864] [2021-11-23 13:44:48,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590629864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:48,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:48,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:48,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316831728] [2021-11-23 13:44:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:48,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:48,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:48,450 INFO L87 Difference]: Start difference. First operand 17614 states and 21005 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 13:44:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:50,074 INFO L93 Difference]: Finished difference Result 26134 states and 31141 transitions. [2021-11-23 13:44:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2021-11-23 13:44:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:50,091 INFO L225 Difference]: With dead ends: 26134 [2021-11-23 13:44:50,091 INFO L226 Difference]: Without dead ends: 17616 [2021-11-23 13:44:50,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:44:50,101 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 900 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:50,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1343 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17616 states. [2021-11-23 13:44:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17616 to 17614. [2021-11-23 13:44:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17611 states have (on average 1.1910169780250979) internal successors, (20975), 17613 states have internal predecessors, (20975), 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 13:44:51,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 20975 transitions. [2021-11-23 13:44:51,547 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 20975 transitions. Word has length 159 [2021-11-23 13:44:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:51,548 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 20975 transitions. [2021-11-23 13:44:51,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 13:44:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 20975 transitions. [2021-11-23 13:44:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-23 13:44:51,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:51,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:51,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-23 13:44:51,558 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash -86554284, now seen corresponding path program 1 times [2021-11-23 13:44:51,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:51,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251183917] [2021-11-23 13:44:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:51,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 13:44:51,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:51,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251183917] [2021-11-23 13:44:51,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251183917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:51,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:51,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:51,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724848499] [2021-11-23 13:44:51,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:51,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:51,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:51,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:51,605 INFO L87 Difference]: Start difference. First operand 17614 states and 20975 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 13:44:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:53,416 INFO L93 Difference]: Finished difference Result 30974 states and 36733 transitions. [2021-11-23 13:44:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 190 [2021-11-23 13:44:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:53,437 INFO L225 Difference]: With dead ends: 30974 [2021-11-23 13:44:53,437 INFO L226 Difference]: Without dead ends: 19901 [2021-11-23 13:44:53,447 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 13:44:53,447 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 359 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:53,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 892 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19901 states. [2021-11-23 13:44:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19901 to 19837. [2021-11-23 13:44:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19837 states, 19834 states have (on average 1.185489563376021) internal successors, (23513), 19836 states have internal predecessors, (23513), 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 13:44:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19837 states to 19837 states and 23513 transitions. [2021-11-23 13:44:55,175 INFO L78 Accepts]: Start accepts. Automaton has 19837 states and 23513 transitions. Word has length 190 [2021-11-23 13:44:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:55,177 INFO L470 AbstractCegarLoop]: Abstraction has 19837 states and 23513 transitions. [2021-11-23 13:44:55,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 13:44:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 19837 states and 23513 transitions. [2021-11-23 13:44:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-23 13:44:55,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:55,188 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:55,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-23 13:44:55,188 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:55,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2044857403, now seen corresponding path program 1 times [2021-11-23 13:44:55,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:55,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383022446] [2021-11-23 13:44:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:55,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-23 13:44:55,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383022446] [2021-11-23 13:44:55,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383022446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:55,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:55,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815051897] [2021-11-23 13:44:55,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:55,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:55,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:55,222 INFO L87 Difference]: Start difference. First operand 19837 states and 23513 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 13:44:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:56,973 INFO L93 Difference]: Finished difference Result 26252 states and 31250 transitions. [2021-11-23 13:44:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 191 [2021-11-23 13:44:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:56,993 INFO L225 Difference]: With dead ends: 26252 [2021-11-23 13:44:56,993 INFO L226 Difference]: Without dead ends: 19837 [2021-11-23 13:44:57,001 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 13:44:57,001 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 471 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:57,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 789 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19837 states. [2021-11-23 13:44:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19837 to 19589. [2021-11-23 13:44:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19589 states, 19586 states have (on average 1.1817624834065148) internal successors, (23146), 19588 states have internal predecessors, (23146), 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 13:44:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19589 states to 19589 states and 23146 transitions. [2021-11-23 13:44:58,912 INFO L78 Accepts]: Start accepts. Automaton has 19589 states and 23146 transitions. Word has length 191 [2021-11-23 13:44:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:58,912 INFO L470 AbstractCegarLoop]: Abstraction has 19589 states and 23146 transitions. [2021-11-23 13:44:58,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 13:44:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 19589 states and 23146 transitions. [2021-11-23 13:44:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-23 13:44:58,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:58,920 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:58,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-23 13:44:58,920 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash -726347271, now seen corresponding path program 1 times [2021-11-23 13:44:58,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:58,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146557449] [2021-11-23 13:44:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:58,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-23 13:44:58,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:58,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146557449] [2021-11-23 13:44:58,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146557449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:58,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:58,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:58,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474635148] [2021-11-23 13:44:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:58,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:58,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:58,949 INFO L87 Difference]: Start difference. First operand 19589 states and 23146 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:00,688 INFO L93 Difference]: Finished difference Result 25575 states and 30323 transitions. [2021-11-23 13:45:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:45:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-11-23 13:45:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:00,706 INFO L225 Difference]: With dead ends: 25575 [2021-11-23 13:45:00,706 INFO L226 Difference]: Without dead ends: 19385 [2021-11-23 13:45:00,712 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 13:45:00,712 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 170 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 969 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 13:45:00,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 969 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19385 states. [2021-11-23 13:45:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19385 to 19385. [2021-11-23 13:45:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19385 states, 19382 states have (on average 1.1828500670725415) internal successors, (22926), 19384 states have internal predecessors, (22926), 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 13:45:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19385 states to 19385 states and 22926 transitions. [2021-11-23 13:45:02,342 INFO L78 Accepts]: Start accepts. Automaton has 19385 states and 22926 transitions. Word has length 191 [2021-11-23 13:45:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:02,342 INFO L470 AbstractCegarLoop]: Abstraction has 19385 states and 22926 transitions. [2021-11-23 13:45:02,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 19385 states and 22926 transitions. [2021-11-23 13:45:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-23 13:45:02,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:02,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:02,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 13:45:02,351 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:02,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1164254789, now seen corresponding path program 1 times [2021-11-23 13:45:02,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:02,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136868815] [2021-11-23 13:45:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:02,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:45:02,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:02,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136868815] [2021-11-23 13:45:02,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136868815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:02,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:02,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:45:02,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812956742] [2021-11-23 13:45:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:02,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:45:02,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:45:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:45:02,396 INFO L87 Difference]: Start difference. First operand 19385 states and 22926 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 13:45:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:04,244 INFO L93 Difference]: Finished difference Result 30439 states and 36004 transitions. [2021-11-23 13:45:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:45:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 194 [2021-11-23 13:45:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:04,264 INFO L225 Difference]: With dead ends: 30439 [2021-11-23 13:45:04,264 INFO L226 Difference]: Without dead ends: 19387 [2021-11-23 13:45:04,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:45:04,273 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 935 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:04,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1289 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19387 states. [2021-11-23 13:45:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19387 to 19385. [2021-11-23 13:45:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19385 states, 19382 states have (on average 1.1802703539366421) internal successors, (22876), 19384 states have internal predecessors, (22876), 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 13:45:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19385 states to 19385 states and 22876 transitions. [2021-11-23 13:45:05,933 INFO L78 Accepts]: Start accepts. Automaton has 19385 states and 22876 transitions. Word has length 194 [2021-11-23 13:45:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:05,934 INFO L470 AbstractCegarLoop]: Abstraction has 19385 states and 22876 transitions. [2021-11-23 13:45:05,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 13:45:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19385 states and 22876 transitions. [2021-11-23 13:45:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 13:45:05,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:05,941 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:05,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-23 13:45:05,941 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash 968816171, now seen corresponding path program 1 times [2021-11-23 13:45:05,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:05,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538246545] [2021-11-23 13:45:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:05,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-23 13:45:05,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:05,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538246545] [2021-11-23 13:45:05,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538246545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:05,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:05,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:45:05,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836478945] [2021-11-23 13:45:05,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:05,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:45:05,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:45:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:45:05,977 INFO L87 Difference]: Start difference. First operand 19385 states and 22876 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 13:45:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:07,431 INFO L93 Difference]: Finished difference Result 22303 states and 26424 transitions. [2021-11-23 13:45:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:45:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 196 [2021-11-23 13:45:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:07,444 INFO L225 Difference]: With dead ends: 22303 [2021-11-23 13:45:07,445 INFO L226 Difference]: Without dead ends: 13332 [2021-11-23 13:45:07,451 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 13:45:07,452 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 106 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:07,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1015 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13332 states. [2021-11-23 13:45:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13332 to 13332. [2021-11-23 13:45:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13332 states, 13331 states have (on average 1.172230140274548) internal successors, (15627), 13331 states have internal predecessors, (15627), 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 13:45:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13332 states to 13332 states and 15627 transitions. [2021-11-23 13:45:08,574 INFO L78 Accepts]: Start accepts. Automaton has 13332 states and 15627 transitions. Word has length 196 [2021-11-23 13:45:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:08,575 INFO L470 AbstractCegarLoop]: Abstraction has 13332 states and 15627 transitions. [2021-11-23 13:45:08,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 13:45:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 13332 states and 15627 transitions. [2021-11-23 13:45:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-23 13:45:08,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:08,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:08,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 13:45:08,584 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1304630154, now seen corresponding path program 1 times [2021-11-23 13:45:08,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:08,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22521610] [2021-11-23 13:45:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:08,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:45:08,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22521610] [2021-11-23 13:45:08,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22521610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:08,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:08,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:45:08,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285233243] [2021-11-23 13:45:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:08,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:45:08,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:08,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:45:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:45:08,630 INFO L87 Difference]: Start difference. First operand 13332 states and 15627 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 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 13:45:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:10,150 INFO L93 Difference]: Finished difference Result 28558 states and 33365 transitions. [2021-11-23 13:45:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:45:10,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 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 226 [2021-11-23 13:45:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:10,166 INFO L225 Difference]: With dead ends: 28558 [2021-11-23 13:45:10,166 INFO L226 Difference]: Without dead ends: 15252 [2021-11-23 13:45:10,174 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 13:45:10,174 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 126 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:10,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 713 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15252 states. [2021-11-23 13:45:11,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15252 to 15172. [2021-11-23 13:45:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.1624810493705096) internal successors, (17636), 15171 states have internal predecessors, (17636), 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 13:45:11,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 17636 transitions. [2021-11-23 13:45:11,445 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 17636 transitions. Word has length 226 [2021-11-23 13:45:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:11,446 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 17636 transitions. [2021-11-23 13:45:11,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 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 13:45:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 17636 transitions. [2021-11-23 13:45:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 13:45:11,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:11,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:11,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-23 13:45:11,457 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:11,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1418297693, now seen corresponding path program 1 times [2021-11-23 13:45:11,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:11,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215609645] [2021-11-23 13:45:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:11,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:45:11,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:11,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215609645] [2021-11-23 13:45:11,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215609645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:11,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:11,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:45:11,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544181197] [2021-11-23 13:45:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:11,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:45:11,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:45:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:45:11,502 INFO L87 Difference]: Start difference. First operand 15172 states and 17636 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 13:45:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:13,013 INFO L93 Difference]: Finished difference Result 29246 states and 34096 transitions. [2021-11-23 13:45:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:45:13,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 230 [2021-11-23 13:45:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:13,036 INFO L225 Difference]: With dead ends: 29246 [2021-11-23 13:45:13,036 INFO L226 Difference]: Without dead ends: 15970 [2021-11-23 13:45:13,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:45:13,046 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 750 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:13,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 960 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15970 states. [2021-11-23 13:45:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15970 to 15172. [2021-11-23 13:45:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.156680508865599) internal successors, (17548), 15171 states have internal predecessors, (17548), 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 13:45:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 17548 transitions. [2021-11-23 13:45:14,366 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 17548 transitions. Word has length 230 [2021-11-23 13:45:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:14,367 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 17548 transitions. [2021-11-23 13:45:14,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 13:45:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 17548 transitions. [2021-11-23 13:45:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 13:45:14,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:14,373 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:14,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-23 13:45:14,373 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash -10632235, now seen corresponding path program 1 times [2021-11-23 13:45:14,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:14,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582998269] [2021-11-23 13:45:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:14,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:45:14,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:14,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582998269] [2021-11-23 13:45:14,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582998269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:14,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:14,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:45:14,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953119857] [2021-11-23 13:45:14,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:14,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:45:14,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:45:14,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:45:14,414 INFO L87 Difference]: Start difference. First operand 15172 states and 17548 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 13:45:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:15,827 INFO L93 Difference]: Finished difference Result 27166 states and 31539 transitions. [2021-11-23 13:45:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:45:15,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 231 [2021-11-23 13:45:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:15,841 INFO L225 Difference]: With dead ends: 27166 [2021-11-23 13:45:15,841 INFO L226 Difference]: Without dead ends: 15204 [2021-11-23 13:45:15,847 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 13:45:15,847 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 302 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:15,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 887 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15204 states. [2021-11-23 13:45:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15204 to 15172. [2021-11-23 13:45:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.1376969217586184) internal successors, (17260), 15171 states have internal predecessors, (17260), 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 13:45:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 17260 transitions. [2021-11-23 13:45:17,147 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 17260 transitions. Word has length 231 [2021-11-23 13:45:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:17,147 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 17260 transitions. [2021-11-23 13:45:17,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 13:45:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 17260 transitions. [2021-11-23 13:45:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-23 13:45:17,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:17,154 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:17,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-23 13:45:17,154 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1138969614, now seen corresponding path program 1 times [2021-11-23 13:45:17,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:17,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268173058] [2021-11-23 13:45:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:17,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:45:17,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:17,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268173058] [2021-11-23 13:45:17,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268173058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:17,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:17,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:45:17,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095653533] [2021-11-23 13:45:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:17,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:45:17,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:45:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:45:17,195 INFO L87 Difference]: Start difference. First operand 15172 states and 17260 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 13:45:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:18,709 INFO L93 Difference]: Finished difference Result 24584 states and 28063 transitions. [2021-11-23 13:45:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:45:18,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 234 [2021-11-23 13:45:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:18,724 INFO L225 Difference]: With dead ends: 24584 [2021-11-23 13:45:18,724 INFO L226 Difference]: Without dead ends: 15652 [2021-11-23 13:45:18,729 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 13:45:18,730 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 321 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:18,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 899 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15652 states. [2021-11-23 13:45:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15652 to 15172. [2021-11-23 13:45:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.1250411970206315) internal successors, (17068), 15171 states have internal predecessors, (17068), 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 13:45:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 17068 transitions. [2021-11-23 13:45:20,045 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 17068 transitions. Word has length 234 [2021-11-23 13:45:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:20,045 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 17068 transitions. [2021-11-23 13:45:20,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 13:45:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 17068 transitions. [2021-11-23 13:45:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-23 13:45:20,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:20,052 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:20,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-23 13:45:20,052 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1083841393, now seen corresponding path program 1 times [2021-11-23 13:45:20,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:20,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80645929] [2021-11-23 13:45:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:20,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:45:20,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80645929] [2021-11-23 13:45:20,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80645929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:20,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:20,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:45:20,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710546996] [2021-11-23 13:45:20,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:20,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:45:20,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:45:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:45:20,101 INFO L87 Difference]: Start difference. First operand 15172 states and 17068 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 13:45:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:21,546 INFO L93 Difference]: Finished difference Result 28480 states and 32127 transitions. [2021-11-23 13:45:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:45:21,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 236 [2021-11-23 13:45:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:21,560 INFO L225 Difference]: With dead ends: 28480 [2021-11-23 13:45:21,560 INFO L226 Difference]: Without dead ends: 15204 [2021-11-23 13:45:21,567 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 13:45:21,568 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 264 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:21,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 786 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15204 states. [2021-11-23 13:45:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15204 to 15172. [2021-11-23 13:45:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.103421000593237) internal successors, (16740), 15171 states have internal predecessors, (16740), 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 13:45:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 16740 transitions. [2021-11-23 13:45:22,915 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 16740 transitions. Word has length 236 [2021-11-23 13:45:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:22,915 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 16740 transitions. [2021-11-23 13:45:22,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 13:45:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 16740 transitions. [2021-11-23 13:45:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-23 13:45:22,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:22,922 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:22,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-23 13:45:22,922 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash -701386415, now seen corresponding path program 1 times [2021-11-23 13:45:22,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:22,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845185986] [2021-11-23 13:45:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:22,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:45:22,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:22,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845185986] [2021-11-23 13:45:22,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845185986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:22,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:22,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:45:22,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393962707] [2021-11-23 13:45:22,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:22,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:45:22,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:45:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:45:22,971 INFO L87 Difference]: Start difference. First operand 15172 states and 16740 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 13:45:23,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:23,611 INFO L93 Difference]: Finished difference Result 21442 states and 23517 transitions. [2021-11-23 13:45:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:45:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 236 [2021-11-23 13:45:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:23,615 INFO L225 Difference]: With dead ends: 21442 [2021-11-23 13:45:23,615 INFO L226 Difference]: Without dead ends: 3811 [2021-11-23 13:45:23,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:45:23,623 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 666 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:23,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 409 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2021-11-23 13:45:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3811. [2021-11-23 13:45:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3810 states have (on average 1.051968503937008) internal successors, (4008), 3810 states have internal predecessors, (4008), 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 13:45:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 4008 transitions. [2021-11-23 13:45:23,942 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 4008 transitions. Word has length 236 [2021-11-23 13:45:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:23,942 INFO L470 AbstractCegarLoop]: Abstraction has 3811 states and 4008 transitions. [2021-11-23 13:45:23,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 13:45:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 4008 transitions. [2021-11-23 13:45:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-23 13:45:23,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:23,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:23,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-23 13:45:23,945 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:23,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2068077837, now seen corresponding path program 1 times [2021-11-23 13:45:23,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:23,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528083280] [2021-11-23 13:45:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:23,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:45:24,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:24,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528083280] [2021-11-23 13:45:24,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528083280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:24,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:24,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:45:24,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742450168] [2021-11-23 13:45:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:24,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:45:24,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:45:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:45:24,117 INFO L87 Difference]: Start difference. First operand 3811 states and 4008 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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 13:45:24,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:24,670 INFO L93 Difference]: Finished difference Result 3811 states and 4008 transitions. [2021-11-23 13:45:24,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:45:24,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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 239 [2021-11-23 13:45:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:24,671 INFO L225 Difference]: With dead ends: 3811 [2021-11-23 13:45:24,671 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:45:24,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:45:24,673 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 578 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:24,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2883 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:45:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:45:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:45:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 13:45:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:45:24,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 239 [2021-11-23 13:45:24,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:24,715 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:45:24,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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 13:45:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:45:24,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:45:24,718 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-23 13:45:24,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-23 13:45:24,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-23 13:45:24,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-23 13:45:24,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 13:45:57,722 WARN L227 SmtUtils]: Spent 32.97s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:46:03,532 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 298 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:46:13,626 WARN L227 SmtUtils]: Spent 7.06s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:48:54,731 WARN L227 SmtUtils]: Spent 2.69m on a formula simplification that was a NOOP. DAG size: 413 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:49:11,548 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:49:35,600 WARN L227 SmtUtils]: Spent 11.51s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:49:40,903 WARN L227 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:49:51,190 WARN L227 SmtUtils]: Spent 9.97s on a formula simplification that was a NOOP. DAG size: 303 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:49:58,777 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 296 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:50:15,960 WARN L227 SmtUtils]: Spent 17.18s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:50:30,599 WARN L227 SmtUtils]: Spent 10.68s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:50:48,647 WARN L227 SmtUtils]: Spent 11.42s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:51:02,242 WARN L227 SmtUtils]: Spent 13.59s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:51:17,399 WARN L227 SmtUtils]: Spent 15.15s on a formula simplification that was a NOOP. DAG size: 242 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:51:33,620 WARN L227 SmtUtils]: Spent 11.37s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:51:44,757 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 260 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:51:52,531 WARN L227 SmtUtils]: Spent 7.09s on a formula simplification that was a NOOP. DAG size: 209 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:52:06,376 WARN L227 SmtUtils]: Spent 13.60s on a formula simplification that was a NOOP. DAG size: 240 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:52:22,641 WARN L227 SmtUtils]: Spent 11.45s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:52:56,449 WARN L227 SmtUtils]: Spent 33.81s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:53:02,953 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:53:47,360 WARN L227 SmtUtils]: Spent 37.23s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:54:01,953 WARN L227 SmtUtils]: Spent 12.94s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:54:14,695 WARN L227 SmtUtils]: Spent 12.74s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:54:24,119 WARN L227 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:54:38,393 WARN L227 SmtUtils]: Spent 12.71s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:55:26,743 WARN L227 SmtUtils]: Spent 47.75s on a formula simplification that was a NOOP. DAG size: 333 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:55:39,339 WARN L227 SmtUtils]: Spent 12.59s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:55:52,847 WARN L227 SmtUtils]: Spent 13.51s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:56:34,963 WARN L227 SmtUtils]: Spent 42.11s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:56:54,934 WARN L227 SmtUtils]: Spent 14.13s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:57:11,824 WARN L227 SmtUtils]: Spent 16.89s on a formula simplification that was a NOOP. DAG size: 257 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-23 13:57:21,333 WARN L227 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 258 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)