./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/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 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:40:08,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:40:08,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:40:08,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:40:08,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:40:08,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:40:08,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:40:08,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:40:08,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:40:08,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:40:08,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:40:08,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:40:08,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:40:08,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:40:08,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:40:08,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:40:08,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:40:08,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:40:08,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:40:08,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:40:08,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:40:08,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:40:08,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:40:08,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:40:08,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:40:08,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:40:08,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:40:08,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:40:08,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:40:08,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:40:08,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:40:08,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:40:08,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:40:08,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:40:08,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:40:08,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:40:08,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:40:08,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:40:08,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:40:08,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:40:08,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:40:08,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:40:08,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:40:08,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:40:08,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:40:08,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:40:08,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:40:08,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:40:08,590 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:40:08,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:40:08,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:40:08,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:40:08,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:40:08,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:40:08,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:40:08,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:40:08,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:40:08,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:40:08,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:40:08,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:40:08,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:40:08,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:40:08,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:40:08,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:40:08,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:08,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:40:08,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:40:08,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:40:08,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:40:08,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:40:08,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:40:08,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:40:08,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:40:08,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:40:08,600 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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb [2021-11-23 12:40:08,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:40:08,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:40:08,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:40:08,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:40:08,982 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:40:08,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2021-11-23 12:40:09,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/data/b0287ded0/ab5bb978c77644a0b65e1d6bc2738244/FLAG0ee9ba6b8 [2021-11-23 12:40:09,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:40:09,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2021-11-23 12:40:09,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/data/b0287ded0/ab5bb978c77644a0b65e1d6bc2738244/FLAG0ee9ba6b8 [2021-11-23 12:40:09,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/data/b0287ded0/ab5bb978c77644a0b65e1d6bc2738244 [2021-11-23 12:40:09,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:40:09,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:40:10,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:10,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:40:10,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:40:10,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:09" (1/1) ... [2021-11-23 12:40:10,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7e644c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10, skipping insertion in model container [2021-11-23 12:40:10,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:09" (1/1) ... [2021-11-23 12:40:10,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:40:10,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:40:10,341 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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[911,924] [2021-11-23 12:40:10,440 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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[8416,8429] [2021-11-23 12:40:10,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:10,595 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:40:10,622 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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[911,924] [2021-11-23 12:40:10,649 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_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[8416,8429] [2021-11-23 12:40:10,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:10,763 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:40:10,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10 WrapperNode [2021-11-23 12:40:10,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:10,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:10,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:40:10,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:40:10,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:10,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:10,953 INFO L137 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 80, calls inlined = 190, statements flattened = 2899 [2021-11-23 12:40:10,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:10,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:40:10,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:40:10,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:40:10,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:10,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:10,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:10,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:11,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:11,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:11,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:11,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:40:11,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:40:11,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:40:11,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:40:11,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (1/1) ... [2021-11-23 12:40:11,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:11,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:11,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:40:11,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_194cbb6a-dcd5-4d91-bf34-f9a7c65a2f5e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:40:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:40:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:40:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:40:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:40:11,410 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:40:11,412 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:40:13,126 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1 == ~q_free~0); [2021-11-23 12:40:13,127 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 12:40:13,128 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:40:13,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:40:13,155 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-23 12:40:13,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:13 BoogieIcfgContainer [2021-11-23 12:40:13,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:40:13,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:40:13,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:40:13,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:40:13,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:40:09" (1/3) ... [2021-11-23 12:40:13,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5b7cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:13, skipping insertion in model container [2021-11-23 12:40:13,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:10" (2/3) ... [2021-11-23 12:40:13,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5b7cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:13, skipping insertion in model container [2021-11-23 12:40:13,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:13" (3/3) ... [2021-11-23 12:40:13,170 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-1.c [2021-11-23 12:40:13,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:40:13,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 12:40:13,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:40:13,256 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 12:40:13,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 12:40:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 1142 states, 1138 states have (on average 1.523725834797891) internal successors, (1734), 1141 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states 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 12:40:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 12:40:13,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:13,325 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 12:40:13,325 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 12:40:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:13,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1280645398, now seen corresponding path program 1 times [2021-11-23 12:40:13,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:13,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678683548] [2021-11-23 12:40:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:13,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:13,687 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 12:40:13,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:13,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678683548] [2021-11-23 12:40:13,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678683548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:13,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:13,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:13,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370618654] [2021-11-23 12:40:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:13,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:13,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:13,764 INFO L87 Difference]: Start difference. First operand has 1142 states, 1138 states have (on average 1.523725834797891) internal successors, (1734), 1141 states have internal predecessors, (1734), 0 states have call successors, (0), 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 12:40:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:14,156 INFO L93 Difference]: Finished difference Result 2309 states and 3496 transitions. [2021-11-23 12:40:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:40:14,159 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 12:40:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:14,186 INFO L225 Difference]: With dead ends: 2309 [2021-11-23 12:40:14,186 INFO L226 Difference]: Without dead ends: 1279 [2021-11-23 12:40:14,192 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 12:40:14,195 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 1919 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:14,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1919 Valid, 3525 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:40:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-11-23 12:40:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1275. [2021-11-23 12:40:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1272 states have (on average 1.4952830188679245) internal successors, (1902), 1274 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states 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 12:40:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1902 transitions. [2021-11-23 12:40:14,377 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1902 transitions. Word has length 44 [2021-11-23 12:40:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:14,378 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1902 transitions. [2021-11-23 12:40:14,378 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 12:40:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1902 transitions. [2021-11-23 12:40:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 12:40:14,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:14,389 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 12:40:14,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:40:14,390 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 12:40:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash 770338600, now seen corresponding path program 1 times [2021-11-23 12:40:14,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:14,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983992768] [2021-11-23 12:40:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:14,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:14,487 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 12:40:14,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:14,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983992768] [2021-11-23 12:40:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983992768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:14,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:14,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:14,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320208998] [2021-11-23 12:40:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:14,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:14,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:14,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:14,492 INFO L87 Difference]: Start difference. First operand 1275 states and 1902 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 12:40:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:14,805 INFO L93 Difference]: Finished difference Result 2221 states and 3296 transitions. [2021-11-23 12:40:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:40:14,806 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 12:40:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:14,819 INFO L225 Difference]: With dead ends: 2221 [2021-11-23 12:40:14,819 INFO L226 Difference]: Without dead ends: 1944 [2021-11-23 12:40:14,825 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 12:40:14,829 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 5285 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5285 SdHoareTripleChecker+Valid, 2189 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 12:40:14,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5285 Valid, 2189 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-11-23 12:40:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1914. [2021-11-23 12:40:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1911 states have (on average 1.477760334903192) internal successors, (2824), 1913 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states 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 12:40:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2824 transitions. [2021-11-23 12:40:14,949 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2824 transitions. Word has length 44 [2021-11-23 12:40:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:14,949 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2824 transitions. [2021-11-23 12:40:14,950 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 12:40:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2824 transitions. [2021-11-23 12:40:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 12:40:14,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:14,959 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 12:40:14,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:40:14,960 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 12:40:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash -550065153, now seen corresponding path program 1 times [2021-11-23 12:40:14,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:14,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367425798] [2021-11-23 12:40:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:14,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:15,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367425798] [2021-11-23 12:40:15,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367425798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:15,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:15,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:40:15,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425147817] [2021-11-23 12:40:15,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:15,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:15,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:15,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:15,088 INFO L87 Difference]: Start difference. First operand 1914 states and 2824 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 12:40:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:15,298 INFO L93 Difference]: Finished difference Result 4101 states and 6020 transitions. [2021-11-23 12:40:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:40:15,299 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 12:40:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:15,318 INFO L225 Difference]: With dead ends: 4101 [2021-11-23 12:40:15,318 INFO L226 Difference]: Without dead ends: 3198 [2021-11-23 12:40:15,321 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 12:40:15,322 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 570 mSDsluCounter, 5169 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 6834 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 12:40:15,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 6834 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-23 12:40:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 1962. [2021-11-23 12:40:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1959 states have (on average 1.4635017866258295) internal successors, (2867), 1961 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states 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 12:40:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2867 transitions. [2021-11-23 12:40:15,479 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2867 transitions. Word has length 45 [2021-11-23 12:40:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:15,480 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2867 transitions. [2021-11-23 12:40:15,480 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 12:40:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2867 transitions. [2021-11-23 12:40:15,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 12:40:15,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:15,481 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 12:40:15,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:40:15,482 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 12:40:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:15,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1059538243, now seen corresponding path program 1 times [2021-11-23 12:40:15,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:15,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65578410] [2021-11-23 12:40:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:15,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:15,550 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 12:40:15,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:15,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65578410] [2021-11-23 12:40:15,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65578410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:15,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:15,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:15,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606828666] [2021-11-23 12:40:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:15,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:15,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:15,554 INFO L87 Difference]: Start difference. First operand 1962 states and 2867 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 12:40:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:15,910 INFO L93 Difference]: Finished difference Result 4275 states and 6140 transitions. [2021-11-23 12:40:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:40:15,912 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 12:40:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:15,932 INFO L225 Difference]: With dead ends: 4275 [2021-11-23 12:40:15,932 INFO L226 Difference]: Without dead ends: 3326 [2021-11-23 12:40:15,934 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 12:40:15,943 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 5241 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5241 SdHoareTripleChecker+Valid, 2208 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 12:40:15,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5241 Valid, 2208 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2021-11-23 12:40:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3260. [2021-11-23 12:40:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3257 states have (on average 1.4249309180227203) internal successors, (4641), 3259 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states 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 12:40:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4641 transitions. [2021-11-23 12:40:16,142 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4641 transitions. Word has length 45 [2021-11-23 12:40:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:16,143 INFO L470 AbstractCegarLoop]: Abstraction has 3260 states and 4641 transitions. [2021-11-23 12:40:16,143 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 12:40:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4641 transitions. [2021-11-23 12:40:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 12:40:16,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:16,145 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 12:40:16,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:40:16,146 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 12:40:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:16,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2139015236, now seen corresponding path program 1 times [2021-11-23 12:40:16,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:16,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021649084] [2021-11-23 12:40:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:16,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:16,258 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 12:40:16,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:16,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021649084] [2021-11-23 12:40:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021649084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:16,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:40:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551335933] [2021-11-23 12:40:16,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:16,262 INFO L87 Difference]: Start difference. First operand 3260 states and 4641 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 12:40:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:16,754 INFO L93 Difference]: Finished difference Result 8178 states and 11543 transitions. [2021-11-23 12:40:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:40:16,755 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 12:40:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:16,793 INFO L225 Difference]: With dead ends: 8178 [2021-11-23 12:40:16,793 INFO L226 Difference]: Without dead ends: 5936 [2021-11-23 12:40:16,798 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 12:40:16,799 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 472 mSDsluCounter, 5138 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 6796 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 12:40:16,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 6796 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-11-23 12:40:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 3380. [2021-11-23 12:40:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 3377 states have (on average 1.4059816405093277) internal successors, (4748), 3379 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states 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 12:40:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4748 transitions. [2021-11-23 12:40:17,044 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4748 transitions. Word has length 59 [2021-11-23 12:40:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:17,048 INFO L470 AbstractCegarLoop]: Abstraction has 3380 states and 4748 transitions. [2021-11-23 12:40:17,048 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 12:40:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4748 transitions. [2021-11-23 12:40:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 12:40:17,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:17,051 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 12:40:17,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:40:17,052 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 12:40:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1295009734, now seen corresponding path program 1 times [2021-11-23 12:40:17,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:17,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189199072] [2021-11-23 12:40:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:17,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:17,142 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 12:40:17,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:17,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189199072] [2021-11-23 12:40:17,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189199072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:17,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:17,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:17,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34942434] [2021-11-23 12:40:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:17,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:17,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:17,145 INFO L87 Difference]: Start difference. First operand 3380 states and 4748 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 12:40:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:17,428 INFO L93 Difference]: Finished difference Result 6239 states and 8708 transitions. [2021-11-23 12:40:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:17,428 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 12:40:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:17,454 INFO L225 Difference]: With dead ends: 6239 [2021-11-23 12:40:17,454 INFO L226 Difference]: Without dead ends: 4113 [2021-11-23 12:40:17,458 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 12:40:17,459 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 152 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 3289 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 12:40:17,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 3289 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2021-11-23 12:40:17,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 2974. [2021-11-23 12:40:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2971 states have (on average 1.4086166273981824) internal successors, (4185), 2973 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states 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 12:40:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4185 transitions. [2021-11-23 12:40:17,700 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4185 transitions. Word has length 59 [2021-11-23 12:40:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:17,700 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 4185 transitions. [2021-11-23 12:40:17,701 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 12:40:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4185 transitions. [2021-11-23 12:40:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 12:40:17,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:17,702 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 12:40:17,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:40:17,703 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 12:40:17,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1222623176, now seen corresponding path program 1 times [2021-11-23 12:40:17,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:17,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924673024] [2021-11-23 12:40:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:17,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:17,736 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 12:40:17,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:17,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924673024] [2021-11-23 12:40:17,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924673024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:17,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:17,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:17,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565303406] [2021-11-23 12:40:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:17,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:17,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:17,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:17,739 INFO L87 Difference]: Start difference. First operand 2974 states and 4185 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 12:40:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:18,082 INFO L93 Difference]: Finished difference Result 5789 states and 8030 transitions. [2021-11-23 12:40:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:18,083 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 12:40:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:18,106 INFO L225 Difference]: With dead ends: 5789 [2021-11-23 12:40:18,106 INFO L226 Difference]: Without dead ends: 3836 [2021-11-23 12:40:18,110 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 12:40:18,110 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 3423 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:18,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3423 Valid, 1844 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2021-11-23 12:40:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3114. [2021-11-23 12:40:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3111 states have (on average 1.392156862745098) internal successors, (4331), 3113 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states 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 12:40:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4331 transitions. [2021-11-23 12:40:18,346 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4331 transitions. Word has length 59 [2021-11-23 12:40:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:18,346 INFO L470 AbstractCegarLoop]: Abstraction has 3114 states and 4331 transitions. [2021-11-23 12:40:18,346 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 12:40:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4331 transitions. [2021-11-23 12:40:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 12:40:18,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:18,348 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 12:40:18,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:40:18,348 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 12:40:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1497382790, now seen corresponding path program 1 times [2021-11-23 12:40:18,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:18,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553831180] [2021-11-23 12:40:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:18,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:18,381 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 12:40:18,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553831180] [2021-11-23 12:40:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553831180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:18,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:18,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590276713] [2021-11-23 12:40:18,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:18,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:18,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:18,385 INFO L87 Difference]: Start difference. First operand 3114 states and 4331 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 12:40:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:18,735 INFO L93 Difference]: Finished difference Result 7139 states and 9678 transitions. [2021-11-23 12:40:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:18,735 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 12:40:18,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:18,763 INFO L225 Difference]: With dead ends: 7139 [2021-11-23 12:40:18,764 INFO L226 Difference]: Without dead ends: 5047 [2021-11-23 12:40:18,768 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 12:40:18,769 INFO L933 BasicCegarLoop]: 1660 mSDtfsCounter, 1606 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 1819 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 12:40:18,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 1819 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-11-23 12:40:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 5043. [2021-11-23 12:40:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5043 states, 5040 states have (on average 1.3442460317460319) internal successors, (6775), 5042 states have internal predecessors, (6775), 0 states have call successors, (0), 0 states 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 12:40:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5043 states to 5043 states and 6775 transitions. [2021-11-23 12:40:19,102 INFO L78 Accepts]: Start accepts. Automaton has 5043 states and 6775 transitions. Word has length 59 [2021-11-23 12:40:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:19,102 INFO L470 AbstractCegarLoop]: Abstraction has 5043 states and 6775 transitions. [2021-11-23 12:40:19,102 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 12:40:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5043 states and 6775 transitions. [2021-11-23 12:40:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:40:19,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:19,104 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 12:40:19,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:40:19,105 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 12:40:19,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1560732264, now seen corresponding path program 1 times [2021-11-23 12:40:19,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:19,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779695427] [2021-11-23 12:40:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:19,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:19,180 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 12:40:19,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779695427] [2021-11-23 12:40:19,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779695427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:19,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:19,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:19,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852706558] [2021-11-23 12:40:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:19,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:19,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:19,185 INFO L87 Difference]: Start difference. First operand 5043 states and 6775 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 12:40:19,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:19,820 INFO L93 Difference]: Finished difference Result 12913 states and 17029 transitions. [2021-11-23 12:40:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:40:19,821 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 12:40:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:19,846 INFO L225 Difference]: With dead ends: 12913 [2021-11-23 12:40:19,846 INFO L226 Difference]: Without dead ends: 8914 [2021-11-23 12:40:19,853 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 12:40:19,854 INFO L933 BasicCegarLoop]: 1764 mSDtfsCounter, 475 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 5022 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 12:40:19,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 5022 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8914 states. [2021-11-23 12:40:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8914 to 8910. [2021-11-23 12:40:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8910 states, 8907 states have (on average 1.3117772538452903) internal successors, (11684), 8909 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states 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 12:40:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8910 states to 8910 states and 11684 transitions. [2021-11-23 12:40:20,556 INFO L78 Accepts]: Start accepts. Automaton has 8910 states and 11684 transitions. Word has length 61 [2021-11-23 12:40:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:20,556 INFO L470 AbstractCegarLoop]: Abstraction has 8910 states and 11684 transitions. [2021-11-23 12:40:20,557 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 12:40:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 8910 states and 11684 transitions. [2021-11-23 12:40:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:40:20,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:20,560 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 12:40:20,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:40:20,565 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:20,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1984170600, now seen corresponding path program 1 times [2021-11-23 12:40:20,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:20,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427807937] [2021-11-23 12:40:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:20,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:20,623 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 12:40:20,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:20,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427807937] [2021-11-23 12:40:20,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427807937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:20,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:20,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:20,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13851431] [2021-11-23 12:40:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:20,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:20,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:20,626 INFO L87 Difference]: Start difference. First operand 8910 states and 11684 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 12:40:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:21,360 INFO L93 Difference]: Finished difference Result 16315 states and 21267 transitions. [2021-11-23 12:40:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:40:21,361 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 12:40:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:21,384 INFO L225 Difference]: With dead ends: 16315 [2021-11-23 12:40:21,384 INFO L226 Difference]: Without dead ends: 8614 [2021-11-23 12:40:21,396 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 12:40:21,397 INFO L933 BasicCegarLoop]: 1783 mSDtfsCounter, 465 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 5126 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 12:40:21,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 5126 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8614 states. [2021-11-23 12:40:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8614 to 8601. [2021-11-23 12:40:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8601 states, 8598 states have (on average 1.2947197022563386) internal successors, (11132), 8600 states have internal predecessors, (11132), 0 states have call successors, (0), 0 states 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 12:40:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 11132 transitions. [2021-11-23 12:40:22,039 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 11132 transitions. Word has length 68 [2021-11-23 12:40:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:22,041 INFO L470 AbstractCegarLoop]: Abstraction has 8601 states and 11132 transitions. [2021-11-23 12:40:22,041 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 12:40:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 11132 transitions. [2021-11-23 12:40:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 12:40:22,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:22,054 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 12:40:22,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:40:22,055 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 693331328, now seen corresponding path program 1 times [2021-11-23 12:40:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079473377] [2021-11-23 12:40:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:22,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:22,136 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 12:40:22,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:22,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079473377] [2021-11-23 12:40:22,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079473377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:22,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:22,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:40:22,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110007822] [2021-11-23 12:40:22,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:22,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:22,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:22,140 INFO L87 Difference]: Start difference. First operand 8601 states and 11132 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 12:40:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:22,688 INFO L93 Difference]: Finished difference Result 13995 states and 17952 transitions. [2021-11-23 12:40:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:40:22,689 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 12:40:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:22,704 INFO L225 Difference]: With dead ends: 13995 [2021-11-23 12:40:22,705 INFO L226 Difference]: Without dead ends: 6459 [2021-11-23 12:40:22,716 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 12:40:22,716 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 217 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 6531 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 12:40:22,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 6531 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2021-11-23 12:40:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 5786. [2021-11-23 12:40:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 5783 states have (on average 1.3046861490575825) internal successors, (7545), 5785 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states 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 12:40:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 7545 transitions. [2021-11-23 12:40:23,105 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 7545 transitions. Word has length 103 [2021-11-23 12:40:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:23,105 INFO L470 AbstractCegarLoop]: Abstraction has 5786 states and 7545 transitions. [2021-11-23 12:40:23,105 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 12:40:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 7545 transitions. [2021-11-23 12:40:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 12:40:23,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:23,110 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 12:40:23,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:40:23,111 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2145124887, now seen corresponding path program 1 times [2021-11-23 12:40:23,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:23,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634630287] [2021-11-23 12:40:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:23,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:23,147 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 12:40:23,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:23,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634630287] [2021-11-23 12:40:23,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634630287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:23,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:23,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:23,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296291316] [2021-11-23 12:40:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:23,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:23,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:23,151 INFO L87 Difference]: Start difference. First operand 5786 states and 7545 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 12:40:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:23,593 INFO L93 Difference]: Finished difference Result 10101 states and 13058 transitions. [2021-11-23 12:40:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:23,594 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 12:40:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:23,610 INFO L225 Difference]: With dead ends: 10101 [2021-11-23 12:40:23,610 INFO L226 Difference]: Without dead ends: 5587 [2021-11-23 12:40:23,618 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 12:40:23,619 INFO L933 BasicCegarLoop]: 1662 mSDtfsCounter, 174 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3146 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 12:40:23,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 3146 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2021-11-23 12:40:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5587. [2021-11-23 12:40:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5584 states have (on average 1.309634670487106) internal successors, (7313), 5586 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states 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 12:40:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 7313 transitions. [2021-11-23 12:40:24,034 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 7313 transitions. Word has length 106 [2021-11-23 12:40:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:24,035 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 7313 transitions. [2021-11-23 12:40:24,035 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 12:40:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 7313 transitions. [2021-11-23 12:40:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 12:40:24,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:24,040 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 12:40:24,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:40:24,040 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:24,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -944860604, now seen corresponding path program 1 times [2021-11-23 12:40:24,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:24,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053790206] [2021-11-23 12:40:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:24,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:24,107 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 12:40:24,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053790206] [2021-11-23 12:40:24,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053790206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:24,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:24,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:24,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475235395] [2021-11-23 12:40:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:24,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:24,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:24,111 INFO L87 Difference]: Start difference. First operand 5587 states and 7313 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 12:40:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:24,692 INFO L93 Difference]: Finished difference Result 10859 states and 13963 transitions. [2021-11-23 12:40:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:24,693 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 12:40:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:24,709 INFO L225 Difference]: With dead ends: 10859 [2021-11-23 12:40:24,710 INFO L226 Difference]: Without dead ends: 6368 [2021-11-23 12:40:24,719 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 12:40:24,719 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 3270 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3270 SdHoareTripleChecker+Valid, 1860 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 12:40:24,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3270 Valid, 1860 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6368 states. [2021-11-23 12:40:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6368 to 5600. [2021-11-23 12:40:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5597 states have (on average 1.2976594604252278) internal successors, (7263), 5599 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states 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 12:40:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 7263 transitions. [2021-11-23 12:40:25,163 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 7263 transitions. Word has length 107 [2021-11-23 12:40:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:25,163 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 7263 transitions. [2021-11-23 12:40:25,164 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 12:40:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 7263 transitions. [2021-11-23 12:40:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 12:40:25,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:25,168 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 12:40:25,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:40:25,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:25,170 INFO L85 PathProgramCache]: Analyzing trace with hash -493255838, now seen corresponding path program 1 times [2021-11-23 12:40:25,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:25,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373297081] [2021-11-23 12:40:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:25,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:25,211 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 12:40:25,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:25,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373297081] [2021-11-23 12:40:25,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373297081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:25,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:25,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:25,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619455947] [2021-11-23 12:40:25,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:25,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:25,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:25,215 INFO L87 Difference]: Start difference. First operand 5600 states and 7263 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 12:40:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:25,563 INFO L93 Difference]: Finished difference Result 9785 states and 12538 transitions. [2021-11-23 12:40:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:25,563 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 12:40:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:25,575 INFO L225 Difference]: With dead ends: 9785 [2021-11-23 12:40:25,576 INFO L226 Difference]: Without dead ends: 5281 [2021-11-23 12:40:25,583 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 12:40:25,584 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 113 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 3315 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 12:40:25,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 3315 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2021-11-23 12:40:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5224. [2021-11-23 12:40:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 5221 states have (on average 1.288833556789887) internal successors, (6729), 5223 states have internal predecessors, (6729), 0 states have call successors, (0), 0 states 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 12:40:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 6729 transitions. [2021-11-23 12:40:25,897 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 6729 transitions. Word has length 110 [2021-11-23 12:40:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:25,897 INFO L470 AbstractCegarLoop]: Abstraction has 5224 states and 6729 transitions. [2021-11-23 12:40:25,897 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 12:40:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 6729 transitions. [2021-11-23 12:40:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 12:40:25,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:25,900 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 12:40:25,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:40:25,901 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:25,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:25,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1074612414, now seen corresponding path program 1 times [2021-11-23 12:40:25,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:25,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90474799] [2021-11-23 12:40:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:25,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:25,949 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 12:40:25,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90474799] [2021-11-23 12:40:25,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90474799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:25,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:25,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:40:25,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807306925] [2021-11-23 12:40:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:25,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:25,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:25,952 INFO L87 Difference]: Start difference. First operand 5224 states and 6729 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 12:40:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:26,491 INFO L93 Difference]: Finished difference Result 10439 states and 13135 transitions. [2021-11-23 12:40:26,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:26,492 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 12:40:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:26,506 INFO L225 Difference]: With dead ends: 10439 [2021-11-23 12:40:26,507 INFO L226 Difference]: Without dead ends: 6314 [2021-11-23 12:40:26,512 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 12:40:26,513 INFO L933 BasicCegarLoop]: 1678 mSDtfsCounter, 3305 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 1862 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 12:40:26,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3305 Valid, 1862 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2021-11-23 12:40:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 5211. [2021-11-23 12:40:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5208 states have (on average 1.271505376344086) internal successors, (6622), 5210 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 12:40:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 6622 transitions. [2021-11-23 12:40:26,894 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 6622 transitions. Word has length 111 [2021-11-23 12:40:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:26,894 INFO L470 AbstractCegarLoop]: Abstraction has 5211 states and 6622 transitions. [2021-11-23 12:40:26,895 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 12:40:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 6622 transitions. [2021-11-23 12:40:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:26,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:26,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:26,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:40:26,899 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 12:40:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash -733181096, now seen corresponding path program 1 times [2021-11-23 12:40:26,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:26,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667296344] [2021-11-23 12:40:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:26,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:26,945 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 12:40:26,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:26,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667296344] [2021-11-23 12:40:26,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667296344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:26,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:26,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:26,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140452397] [2021-11-23 12:40:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:26,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:26,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:26,951 INFO L87 Difference]: Start difference. First operand 5211 states and 6622 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:27,266 INFO L93 Difference]: Finished difference Result 6200 states and 8098 transitions. [2021-11-23 12:40:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:27,278 INFO L225 Difference]: With dead ends: 6200 [2021-11-23 12:40:27,279 INFO L226 Difference]: Without dead ends: 5211 [2021-11-23 12:40:27,282 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 12:40:27,283 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1478 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1836 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 12:40:27,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1836 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2021-11-23 12:40:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5211. [2021-11-23 12:40:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5208 states have (on average 1.2713133640552996) internal successors, (6621), 5210 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states 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 12:40:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 6621 transitions. [2021-11-23 12:40:27,631 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 6621 transitions. Word has length 121 [2021-11-23 12:40:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:27,631 INFO L470 AbstractCegarLoop]: Abstraction has 5211 states and 6621 transitions. [2021-11-23 12:40:27,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 6621 transitions. [2021-11-23 12:40:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:27,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:27,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:27,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:40:27,636 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 12:40:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1632853974, now seen corresponding path program 1 times [2021-11-23 12:40:27,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:27,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684539344] [2021-11-23 12:40:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:27,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:27,688 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 12:40:27,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:27,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684539344] [2021-11-23 12:40:27,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684539344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:27,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:27,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:27,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629554673] [2021-11-23 12:40:27,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:27,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:27,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:27,692 INFO L87 Difference]: Start difference. First operand 5211 states and 6621 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:28,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:28,153 INFO L93 Difference]: Finished difference Result 7006 states and 9284 transitions. [2021-11-23 12:40:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:28,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:28,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:28,166 INFO L225 Difference]: With dead ends: 7006 [2021-11-23 12:40:28,167 INFO L226 Difference]: Without dead ends: 6026 [2021-11-23 12:40:28,170 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 12:40:28,171 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1547 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2944 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 12:40:28,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 2944 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2021-11-23 12:40:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 6024. [2021-11-23 12:40:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2987875768144825) internal successors, (7820), 6023 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states 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 12:40:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7820 transitions. [2021-11-23 12:40:28,533 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7820 transitions. Word has length 121 [2021-11-23 12:40:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:28,533 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7820 transitions. [2021-11-23 12:40:28,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7820 transitions. [2021-11-23 12:40:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:28,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:28,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:28,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:40:28,537 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 12:40:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1009572372, now seen corresponding path program 1 times [2021-11-23 12:40:28,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023670982] [2021-11-23 12:40:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:28,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:28,570 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 12:40:28,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023670982] [2021-11-23 12:40:28,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023670982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:28,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:28,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:28,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414356580] [2021-11-23 12:40:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:28,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:28,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:28,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:28,573 INFO L87 Difference]: Start difference. First operand 6024 states and 7820 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:28,949 INFO L93 Difference]: Finished difference Result 7816 states and 10477 transitions. [2021-11-23 12:40:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:28,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:28,962 INFO L225 Difference]: With dead ends: 7816 [2021-11-23 12:40:28,962 INFO L226 Difference]: Without dead ends: 6024 [2021-11-23 12:40:28,966 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 12:40:28,967 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1637 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 1648 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 12:40:28,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1637 Valid, 1648 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-11-23 12:40:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2021-11-23 12:40:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.29745889387145) internal successors, (7812), 6023 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states 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 12:40:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7812 transitions. [2021-11-23 12:40:29,478 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7812 transitions. Word has length 121 [2021-11-23 12:40:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:29,478 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7812 transitions. [2021-11-23 12:40:29,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7812 transitions. [2021-11-23 12:40:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:29,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:29,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:29,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:40:29,485 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:29,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1402773460, now seen corresponding path program 1 times [2021-11-23 12:40:29,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:29,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013952178] [2021-11-23 12:40:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:29,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:29,537 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 12:40:29,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:29,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013952178] [2021-11-23 12:40:29,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013952178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:29,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:29,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:29,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666527532] [2021-11-23 12:40:29,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:29,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:29,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:29,541 INFO L87 Difference]: Start difference. First operand 6024 states and 7812 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:29,931 INFO L93 Difference]: Finished difference Result 7815 states and 10460 transitions. [2021-11-23 12:40:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:29,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:29,943 INFO L225 Difference]: With dead ends: 7815 [2021-11-23 12:40:29,943 INFO L226 Difference]: Without dead ends: 6024 [2021-11-23 12:40:29,947 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 12:40:29,948 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 1631 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 1643 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 12:40:29,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 1643 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-11-23 12:40:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2021-11-23 12:40:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2961302109284172) internal successors, (7804), 6023 states have internal predecessors, (7804), 0 states have call successors, (0), 0 states 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 12:40:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7804 transitions. [2021-11-23 12:40:30,410 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7804 transitions. Word has length 121 [2021-11-23 12:40:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:30,410 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7804 transitions. [2021-11-23 12:40:30,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7804 transitions. [2021-11-23 12:40:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:30,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:30,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:30,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:40:30,415 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:30,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:30,416 INFO L85 PathProgramCache]: Analyzing trace with hash -801299948, now seen corresponding path program 1 times [2021-11-23 12:40:30,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:30,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771163073] [2021-11-23 12:40:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:30,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:30,458 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 12:40:30,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:30,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771163073] [2021-11-23 12:40:30,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771163073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:30,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:30,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:30,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13075586] [2021-11-23 12:40:30,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:30,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:30,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:30,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:30,462 INFO L87 Difference]: Start difference. First operand 6024 states and 7804 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:31,010 INFO L93 Difference]: Finished difference Result 9522 states and 12958 transitions. [2021-11-23 12:40:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:31,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:31,025 INFO L225 Difference]: With dead ends: 9522 [2021-11-23 12:40:31,026 INFO L226 Difference]: Without dead ends: 7732 [2021-11-23 12:40:31,031 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 12:40:31,032 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 3267 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 4258 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 12:40:31,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3267 Valid, 4258 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2021-11-23 12:40:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 6024. [2021-11-23 12:40:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2956319548247799) internal successors, (7801), 6023 states have internal predecessors, (7801), 0 states have call successors, (0), 0 states 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 12:40:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7801 transitions. [2021-11-23 12:40:31,554 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7801 transitions. Word has length 121 [2021-11-23 12:40:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:31,554 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7801 transitions. [2021-11-23 12:40:31,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7801 transitions. [2021-11-23 12:40:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:31,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:31,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:31,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:40:31,558 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 12:40:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1460273302, now seen corresponding path program 1 times [2021-11-23 12:40:31,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:31,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959435503] [2021-11-23 12:40:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:31,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:31,594 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 12:40:31,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959435503] [2021-11-23 12:40:31,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959435503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:31,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:31,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:31,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708891364] [2021-11-23 12:40:31,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:31,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:31,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:31,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:31,597 INFO L87 Difference]: Start difference. First operand 6024 states and 7801 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:32,212 INFO L93 Difference]: Finished difference Result 9520 states and 12947 transitions. [2021-11-23 12:40:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:32,225 INFO L225 Difference]: With dead ends: 9520 [2021-11-23 12:40:32,225 INFO L226 Difference]: Without dead ends: 7731 [2021-11-23 12:40:32,231 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 12:40:32,232 INFO L933 BasicCegarLoop]: 2942 mSDtfsCounter, 3262 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 4250 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 12:40:32,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3262 Valid, 4250 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2021-11-23 12:40:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 6024. [2021-11-23 12:40:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2951336987211426) internal successors, (7798), 6023 states have internal predecessors, (7798), 0 states have call successors, (0), 0 states 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 12:40:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7798 transitions. [2021-11-23 12:40:32,692 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7798 transitions. Word has length 121 [2021-11-23 12:40:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:32,692 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7798 transitions. [2021-11-23 12:40:32,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7798 transitions. [2021-11-23 12:40:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:32,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:32,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:32,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:40:32,697 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 12:40:32,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash -406435372, now seen corresponding path program 1 times [2021-11-23 12:40:32,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:32,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618597822] [2021-11-23 12:40:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:32,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:32,736 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 12:40:32,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:32,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618597822] [2021-11-23 12:40:32,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618597822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:32,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:32,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:32,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029579043] [2021-11-23 12:40:32,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:32,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:32,739 INFO L87 Difference]: Start difference. First operand 6024 states and 7798 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:33,235 INFO L93 Difference]: Finished difference Result 9516 states and 12932 transitions. [2021-11-23 12:40:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:33,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:33,247 INFO L225 Difference]: With dead ends: 9516 [2021-11-23 12:40:33,247 INFO L226 Difference]: Without dead ends: 7729 [2021-11-23 12:40:33,252 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 12:40:33,252 INFO L933 BasicCegarLoop]: 2935 mSDtfsCounter, 3256 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 4238 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 12:40:33,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3256 Valid, 4238 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2021-11-23 12:40:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6024. [2021-11-23 12:40:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2946354426175053) internal successors, (7795), 6023 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states 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 12:40:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7795 transitions. [2021-11-23 12:40:33,706 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7795 transitions. Word has length 121 [2021-11-23 12:40:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:33,706 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7795 transitions. [2021-11-23 12:40:33,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7795 transitions. [2021-11-23 12:40:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:33,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:33,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:33,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 12:40:33,710 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 12:40:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1491061394, now seen corresponding path program 1 times [2021-11-23 12:40:33,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:33,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45452208] [2021-11-23 12:40:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:33,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:33,738 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 12:40:33,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:33,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45452208] [2021-11-23 12:40:33,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45452208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:33,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:33,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:33,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589633093] [2021-11-23 12:40:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:33,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:33,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:33,741 INFO L87 Difference]: Start difference. First operand 6024 states and 7795 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:34,072 INFO L93 Difference]: Finished difference Result 7810 states and 10420 transitions. [2021-11-23 12:40:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:34,079 INFO L225 Difference]: With dead ends: 7810 [2021-11-23 12:40:34,079 INFO L226 Difference]: Without dead ends: 6024 [2021-11-23 12:40:34,083 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 12:40:34,084 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1615 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1632 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 12:40:34,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 1632 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-11-23 12:40:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2021-11-23 12:40:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2933067596744727) internal successors, (7787), 6023 states have internal predecessors, (7787), 0 states have call successors, (0), 0 states 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 12:40:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7787 transitions. [2021-11-23 12:40:34,485 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7787 transitions. Word has length 121 [2021-11-23 12:40:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:34,485 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7787 transitions. [2021-11-23 12:40:34,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7787 transitions. [2021-11-23 12:40:34,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:34,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:34,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:34,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:40:34,488 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 12:40:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:34,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1710825390, now seen corresponding path program 1 times [2021-11-23 12:40:34,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:34,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877394714] [2021-11-23 12:40:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:34,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:34,518 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 12:40:34,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877394714] [2021-11-23 12:40:34,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877394714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:34,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:34,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:34,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681980903] [2021-11-23 12:40:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:34,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:34,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:34,521 INFO L87 Difference]: Start difference. First operand 6024 states and 7787 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:35,097 INFO L93 Difference]: Finished difference Result 9512 states and 12896 transitions. [2021-11-23 12:40:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:35,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:35,107 INFO L225 Difference]: With dead ends: 9512 [2021-11-23 12:40:35,107 INFO L226 Difference]: Without dead ends: 7727 [2021-11-23 12:40:35,112 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 12:40:35,112 INFO L933 BasicCegarLoop]: 1814 mSDtfsCounter, 4348 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:35,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4348 Valid, 3109 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2021-11-23 12:40:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 6024. [2021-11-23 12:40:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2928085035708354) internal successors, (7784), 6023 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states 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 12:40:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7784 transitions. [2021-11-23 12:40:35,452 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7784 transitions. Word has length 121 [2021-11-23 12:40:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:35,452 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7784 transitions. [2021-11-23 12:40:35,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7784 transitions. [2021-11-23 12:40:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:35,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:35,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:35,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:40:35,455 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 12:40:35,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:35,456 INFO L85 PathProgramCache]: Analyzing trace with hash 677738640, now seen corresponding path program 1 times [2021-11-23 12:40:35,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:35,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957101627] [2021-11-23 12:40:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:35,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:35,492 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 12:40:35,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:35,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957101627] [2021-11-23 12:40:35,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957101627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:35,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:35,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:35,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688616587] [2021-11-23 12:40:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:35,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:35,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:35,495 INFO L87 Difference]: Start difference. First operand 6024 states and 7784 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:36,109 INFO L93 Difference]: Finished difference Result 9382 states and 12703 transitions. [2021-11-23 12:40:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:36,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:36,117 INFO L225 Difference]: With dead ends: 9382 [2021-11-23 12:40:36,117 INFO L226 Difference]: Without dead ends: 7598 [2021-11-23 12:40:36,120 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 12:40:36,120 INFO L933 BasicCegarLoop]: 2780 mSDtfsCounter, 3141 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:36,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3141 Valid, 4048 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2021-11-23 12:40:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 6024. [2021-11-23 12:40:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2923102474671981) internal successors, (7781), 6023 states have internal predecessors, (7781), 0 states have call successors, (0), 0 states 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 12:40:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7781 transitions. [2021-11-23 12:40:36,596 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7781 transitions. Word has length 121 [2021-11-23 12:40:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:36,596 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7781 transitions. [2021-11-23 12:40:36,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7781 transitions. [2021-11-23 12:40:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:36,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:36,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:36,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 12:40:36,600 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 12:40:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2016157550, now seen corresponding path program 1 times [2021-11-23 12:40:36,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:36,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802041103] [2021-11-23 12:40:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:36,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:36,642 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 12:40:36,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:36,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802041103] [2021-11-23 12:40:36,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802041103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:36,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:36,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:36,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072023246] [2021-11-23 12:40:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:36,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:36,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:36,646 INFO L87 Difference]: Start difference. First operand 6024 states and 7781 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:37,380 INFO L93 Difference]: Finished difference Result 9378 states and 12690 transitions. [2021-11-23 12:40:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:37,390 INFO L225 Difference]: With dead ends: 9378 [2021-11-23 12:40:37,390 INFO L226 Difference]: Without dead ends: 7595 [2021-11-23 12:40:37,394 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 12:40:37,394 INFO L933 BasicCegarLoop]: 2774 mSDtfsCounter, 3135 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:37,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3135 Valid, 4039 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7595 states. [2021-11-23 12:40:37,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7595 to 6024. [2021-11-23 12:40:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2918119913635608) internal successors, (7778), 6023 states have internal predecessors, (7778), 0 states have call successors, (0), 0 states 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 12:40:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7778 transitions. [2021-11-23 12:40:37,939 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7778 transitions. Word has length 121 [2021-11-23 12:40:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:37,939 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7778 transitions. [2021-11-23 12:40:37,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7778 transitions. [2021-11-23 12:40:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:37,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:37,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:37,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 12:40:37,943 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 12:40:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1222078544, now seen corresponding path program 1 times [2021-11-23 12:40:37,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:37,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476200960] [2021-11-23 12:40:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:37,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:37,987 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 12:40:37,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:37,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476200960] [2021-11-23 12:40:37,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476200960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:37,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:37,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:37,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975861153] [2021-11-23 12:40:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:37,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:37,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:37,990 INFO L87 Difference]: Start difference. First operand 6024 states and 7778 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:38,466 INFO L93 Difference]: Finished difference Result 7806 states and 10382 transitions. [2021-11-23 12:40:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:38,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:38,472 INFO L225 Difference]: With dead ends: 7806 [2021-11-23 12:40:38,472 INFO L226 Difference]: Without dead ends: 6024 [2021-11-23 12:40:38,475 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 12:40:38,476 INFO L933 BasicCegarLoop]: 1599 mSDtfsCounter, 1497 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:38,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1687 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:38,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-11-23 12:40:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2021-11-23 12:40:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2871616010629463) internal successors, (7750), 6023 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states 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 12:40:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7750 transitions. [2021-11-23 12:40:38,902 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7750 transitions. Word has length 121 [2021-11-23 12:40:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:38,902 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7750 transitions. [2021-11-23 12:40:38,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7750 transitions. [2021-11-23 12:40:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:38,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:38,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:38,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 12:40:38,905 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 12:40:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1502648816, now seen corresponding path program 1 times [2021-11-23 12:40:38,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:38,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250568616] [2021-11-23 12:40:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:38,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:38,936 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 12:40:38,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250568616] [2021-11-23 12:40:38,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250568616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:38,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:38,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:38,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762699979] [2021-11-23 12:40:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:38,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:38,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:38,939 INFO L87 Difference]: Start difference. First operand 6024 states and 7750 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:39,574 INFO L93 Difference]: Finished difference Result 9376 states and 12599 transitions. [2021-11-23 12:40:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:39,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:39,583 INFO L225 Difference]: With dead ends: 9376 [2021-11-23 12:40:39,583 INFO L226 Difference]: Without dead ends: 7595 [2021-11-23 12:40:39,587 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 12:40:39,587 INFO L933 BasicCegarLoop]: 2740 mSDtfsCounter, 3099 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:39,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3099 Valid, 3987 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7595 states. [2021-11-23 12:40:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7595 to 6024. [2021-11-23 12:40:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.286663344959309) internal successors, (7747), 6023 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states 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 12:40:40,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7747 transitions. [2021-11-23 12:40:40,060 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7747 transitions. Word has length 121 [2021-11-23 12:40:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:40,061 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7747 transitions. [2021-11-23 12:40:40,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7747 transitions. [2021-11-23 12:40:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:40,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:40,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:40,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 12:40:40,063 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 12:40:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1173343566, now seen corresponding path program 1 times [2021-11-23 12:40:40,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:40,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460932029] [2021-11-23 12:40:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:40,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:40,098 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 12:40:40,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460932029] [2021-11-23 12:40:40,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460932029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:40,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:40,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:40,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34519151] [2021-11-23 12:40:40,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:40,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:40,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:40,101 INFO L87 Difference]: Start difference. First operand 6024 states and 7747 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:40,824 INFO L93 Difference]: Finished difference Result 9372 states and 12584 transitions. [2021-11-23 12:40:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:40,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:40,834 INFO L225 Difference]: With dead ends: 9372 [2021-11-23 12:40:40,834 INFO L226 Difference]: Without dead ends: 7593 [2021-11-23 12:40:40,837 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 12:40:40,838 INFO L933 BasicCegarLoop]: 2733 mSDtfsCounter, 3093 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3093 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:40,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3093 Valid, 3975 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2021-11-23 12:40:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 6024. [2021-11-23 12:40:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2861650888556717) internal successors, (7744), 6023 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states 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 12:40:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7744 transitions. [2021-11-23 12:40:41,361 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7744 transitions. Word has length 121 [2021-11-23 12:40:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:41,361 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7744 transitions. [2021-11-23 12:40:41,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7744 transitions. [2021-11-23 12:40:41,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:41,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:41,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:41,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 12:40:41,365 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1144843276, now seen corresponding path program 1 times [2021-11-23 12:40:41,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:41,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951431120] [2021-11-23 12:40:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:41,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:41,398 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 12:40:41,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:41,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951431120] [2021-11-23 12:40:41,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951431120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:41,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:41,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:41,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031189369] [2021-11-23 12:40:41,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:41,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:41,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:41,401 INFO L87 Difference]: Start difference. First operand 6024 states and 7744 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:42,074 INFO L93 Difference]: Finished difference Result 9370 states and 12573 transitions. [2021-11-23 12:40:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:42,083 INFO L225 Difference]: With dead ends: 9370 [2021-11-23 12:40:42,083 INFO L226 Difference]: Without dead ends: 7592 [2021-11-23 12:40:42,086 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 12:40:42,086 INFO L933 BasicCegarLoop]: 2728 mSDtfsCounter, 3088 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:42,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3088 Valid, 3967 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-11-23 12:40:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6024. [2021-11-23 12:40:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2856668327520346) internal successors, (7741), 6023 states have internal predecessors, (7741), 0 states have call successors, (0), 0 states 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 12:40:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7741 transitions. [2021-11-23 12:40:42,512 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7741 transitions. Word has length 121 [2021-11-23 12:40:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:42,512 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7741 transitions. [2021-11-23 12:40:42,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7741 transitions. [2021-11-23 12:40:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:42,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:42,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:42,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 12:40:42,514 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 12:40:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash -795738738, now seen corresponding path program 1 times [2021-11-23 12:40:42,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:42,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189671228] [2021-11-23 12:40:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:42,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:42,549 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 12:40:42,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:42,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189671228] [2021-11-23 12:40:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189671228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:42,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:42,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:42,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20975335] [2021-11-23 12:40:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:42,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:42,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:42,552 INFO L87 Difference]: Start difference. First operand 6024 states and 7741 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:43,151 INFO L93 Difference]: Finished difference Result 7801 states and 10302 transitions. [2021-11-23 12:40:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:43,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:43,156 INFO L225 Difference]: With dead ends: 7801 [2021-11-23 12:40:43,156 INFO L226 Difference]: Without dead ends: 6024 [2021-11-23 12:40:43,158 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 12:40:43,159 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1471 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:43,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 1664 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:43,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-11-23 12:40:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2021-11-23 12:40:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.28101644245142) internal successors, (7713), 6023 states have internal predecessors, (7713), 0 states have call successors, (0), 0 states 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 12:40:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7713 transitions. [2021-11-23 12:40:43,719 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7713 transitions. Word has length 121 [2021-11-23 12:40:43,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:43,719 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7713 transitions. [2021-11-23 12:40:43,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7713 transitions. [2021-11-23 12:40:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:43,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:43,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:43,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 12:40:43,721 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 12:40:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1081324492, now seen corresponding path program 1 times [2021-11-23 12:40:43,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:43,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124183756] [2021-11-23 12:40:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:43,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:43,755 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 12:40:43,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:43,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124183756] [2021-11-23 12:40:43,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124183756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:43,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:43,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:43,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484813407] [2021-11-23 12:40:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:43,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:43,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:43,758 INFO L87 Difference]: Start difference. First operand 6024 states and 7713 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:44,562 INFO L93 Difference]: Finished difference Result 9366 states and 12480 transitions. [2021-11-23 12:40:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:44,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:44,571 INFO L225 Difference]: With dead ends: 9366 [2021-11-23 12:40:44,571 INFO L226 Difference]: Without dead ends: 7590 [2021-11-23 12:40:44,574 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 12:40:44,575 INFO L933 BasicCegarLoop]: 2693 mSDtfsCounter, 3051 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:44,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3051 Valid, 3914 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2021-11-23 12:40:45,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 6024. [2021-11-23 12:40:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6021 states have (on average 1.2805181863477828) internal successors, (7710), 6023 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states 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 12:40:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 7710 transitions. [2021-11-23 12:40:45,145 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 7710 transitions. Word has length 121 [2021-11-23 12:40:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:45,146 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 7710 transitions. [2021-11-23 12:40:45,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 7710 transitions. [2021-11-23 12:40:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:40:45,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:45,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:45,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 12:40:45,148 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 310590926, now seen corresponding path program 1 times [2021-11-23 12:40:45,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771093513] [2021-11-23 12:40:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:45,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:45,183 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 12:40:45,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771093513] [2021-11-23 12:40:45,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771093513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:45,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:45,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:45,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271529484] [2021-11-23 12:40:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:45,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:45,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:45,185 INFO L87 Difference]: Start difference. First operand 6024 states and 7710 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:46,435 INFO L93 Difference]: Finished difference Result 10965 states and 14716 transitions. [2021-11-23 12:40:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:46,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 12:40:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:46,446 INFO L225 Difference]: With dead ends: 10965 [2021-11-23 12:40:46,446 INFO L226 Difference]: Without dead ends: 9191 [2021-11-23 12:40:46,450 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 12:40:46,450 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 4003 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4003 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:46,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4003 Valid, 4600 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2021-11-23 12:40:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 8945. [2021-11-23 12:40:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8945 states, 8942 states have (on average 1.318832475956162) internal successors, (11793), 8944 states have internal predecessors, (11793), 0 states have call successors, (0), 0 states 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 12:40:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8945 states to 8945 states and 11793 transitions. [2021-11-23 12:40:47,149 INFO L78 Accepts]: Start accepts. Automaton has 8945 states and 11793 transitions. Word has length 121 [2021-11-23 12:40:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:47,149 INFO L470 AbstractCegarLoop]: Abstraction has 8945 states and 11793 transitions. [2021-11-23 12:40:47,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 12:40:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8945 states and 11793 transitions. [2021-11-23 12:40:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 12:40:47,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:47,151 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 12:40:47,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 12:40:47,151 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:47,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1760853149, now seen corresponding path program 1 times [2021-11-23 12:40:47,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:47,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222168687] [2021-11-23 12:40:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:47,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:47,192 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 12:40:47,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:47,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222168687] [2021-11-23 12:40:47,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222168687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:47,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:47,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:40:47,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099748168] [2021-11-23 12:40:47,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:47,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:47,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:47,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:47,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:47,195 INFO L87 Difference]: Start difference. First operand 8945 states and 11793 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 12:40:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:48,305 INFO L93 Difference]: Finished difference Result 15351 states and 19548 transitions. [2021-11-23 12:40:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:48,307 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 12:40:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:48,318 INFO L225 Difference]: With dead ends: 15351 [2021-11-23 12:40:48,318 INFO L226 Difference]: Without dead ends: 11239 [2021-11-23 12:40:48,322 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 12:40:48,323 INFO L933 BasicCegarLoop]: 1655 mSDtfsCounter, 1501 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1798 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 12:40:48,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1501 Valid, 1798 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11239 states. [2021-11-23 12:40:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11239 to 11235. [2021-11-23 12:40:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11235 states, 11232 states have (on average 1.2902421652421652) internal successors, (14492), 11234 states have internal predecessors, (14492), 0 states have call successors, (0), 0 states 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 12:40:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11235 states to 11235 states and 14492 transitions. [2021-11-23 12:40:49,274 INFO L78 Accepts]: Start accepts. Automaton has 11235 states and 14492 transitions. Word has length 129 [2021-11-23 12:40:49,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:49,274 INFO L470 AbstractCegarLoop]: Abstraction has 11235 states and 14492 transitions. [2021-11-23 12:40:49,274 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 12:40:49,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11235 states and 14492 transitions. [2021-11-23 12:40:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 12:40:49,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:49,277 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:49,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 12:40:49,277 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 12:40:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1695326390, now seen corresponding path program 1 times [2021-11-23 12:40:49,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:49,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713301752] [2021-11-23 12:40:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:49,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:40:49,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:49,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713301752] [2021-11-23 12:40:49,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713301752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:49,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:49,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:40:49,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912121498] [2021-11-23 12:40:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:49,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:49,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:49,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:49,324 INFO L87 Difference]: Start difference. First operand 11235 states and 14492 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:40:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:50,846 INFO L93 Difference]: Finished difference Result 18970 states and 25407 transitions. [2021-11-23 12:40:50,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:40:50,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 141 [2021-11-23 12:40:50,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:50,862 INFO L225 Difference]: With dead ends: 18970 [2021-11-23 12:40:50,862 INFO L226 Difference]: Without dead ends: 14285 [2021-11-23 12:40:50,867 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 12:40:50,868 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 4648 mSDsluCounter, 6248 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 7941 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:50,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 7941 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14285 states. [2021-11-23 12:40:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14285 to 11298. [2021-11-23 12:40:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11298 states, 11295 states have (on average 1.2853474988933156) internal successors, (14518), 11297 states have internal predecessors, (14518), 0 states have call successors, (0), 0 states 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 12:40:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11298 states to 11298 states and 14518 transitions. [2021-11-23 12:40:51,821 INFO L78 Accepts]: Start accepts. Automaton has 11298 states and 14518 transitions. Word has length 141 [2021-11-23 12:40:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:51,821 INFO L470 AbstractCegarLoop]: Abstraction has 11298 states and 14518 transitions. [2021-11-23 12:40:51,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:40:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 11298 states and 14518 transitions. [2021-11-23 12:40:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 12:40:51,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:51,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:51,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 12:40:51,826 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 12:40:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash -998569800, now seen corresponding path program 1 times [2021-11-23 12:40:51,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:51,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751186147] [2021-11-23 12:40:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:51,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:40:51,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:51,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751186147] [2021-11-23 12:40:51,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751186147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:51,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:51,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:40:51,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778928976] [2021-11-23 12:40:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:51,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:51,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:51,874 INFO L87 Difference]: Start difference. First operand 11298 states and 14518 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:40:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:53,255 INFO L93 Difference]: Finished difference Result 17079 states and 22561 transitions. [2021-11-23 12:40:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:40:53,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 141 [2021-11-23 12:40:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:53,270 INFO L225 Difference]: With dead ends: 17079 [2021-11-23 12:40:53,270 INFO L226 Difference]: Without dead ends: 12338 [2021-11-23 12:40:53,275 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 12:40:53,276 INFO L933 BasicCegarLoop]: 1662 mSDtfsCounter, 3727 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:53,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3727 Valid, 4178 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12338 states. [2021-11-23 12:40:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12338 to 11304. [2021-11-23 12:40:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11304 states, 11301 states have (on average 1.280240686664897) internal successors, (14468), 11303 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states 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 12:40:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 14468 transitions. [2021-11-23 12:40:54,283 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 14468 transitions. Word has length 141 [2021-11-23 12:40:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:54,283 INFO L470 AbstractCegarLoop]: Abstraction has 11304 states and 14468 transitions. [2021-11-23 12:40:54,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:40:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 14468 transitions. [2021-11-23 12:40:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 12:40:54,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:54,286 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:54,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 12:40:54,286 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1355815482, now seen corresponding path program 1 times [2021-11-23 12:40:54,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807939260] [2021-11-23 12:40:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:54,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:40:54,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:54,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807939260] [2021-11-23 12:40:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807939260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:54,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:54,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:54,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060684678] [2021-11-23 12:40:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:40:54,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:54,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:40:54,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:40:54,330 INFO L87 Difference]: Start difference. First operand 11304 states and 14468 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:40:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:56,222 INFO L93 Difference]: Finished difference Result 24724 states and 32984 transitions. [2021-11-23 12:40:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:40:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 141 [2021-11-23 12:40:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:56,245 INFO L225 Difference]: With dead ends: 24724 [2021-11-23 12:40:56,246 INFO L226 Difference]: Without dead ends: 19979 [2021-11-23 12:40:56,253 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 12:40:56,254 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 3936 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:56,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3936 Valid, 4797 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19979 states. [2021-11-23 12:40:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19979 to 19427. [2021-11-23 12:40:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19427 states, 19424 states have (on average 1.3148167215815485) internal successors, (25539), 19426 states have internal predecessors, (25539), 0 states have call successors, (0), 0 states 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 12:40:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19427 states to 19427 states and 25539 transitions. [2021-11-23 12:40:58,358 INFO L78 Accepts]: Start accepts. Automaton has 19427 states and 25539 transitions. Word has length 141 [2021-11-23 12:40:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:58,358 INFO L470 AbstractCegarLoop]: Abstraction has 19427 states and 25539 transitions. [2021-11-23 12:40:58,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:40:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 19427 states and 25539 transitions. [2021-11-23 12:40:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:40:58,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:58,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:58,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 12:40:58,362 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:58,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1075704050, now seen corresponding path program 1 times [2021-11-23 12:40:58,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:58,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902509979] [2021-11-23 12:40:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:58,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:40:58,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:58,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902509979] [2021-11-23 12:40:58,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902509979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:58,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:58,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:40:58,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571452727] [2021-11-23 12:40:58,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:58,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:40:58,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:58,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:40:58,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:40:58,416 INFO L87 Difference]: Start difference. First operand 19427 states and 25539 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 12:41:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:01,096 INFO L93 Difference]: Finished difference Result 39933 states and 53851 transitions. [2021-11-23 12:41:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:41:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 146 [2021-11-23 12:41:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:01,129 INFO L225 Difference]: With dead ends: 39933 [2021-11-23 12:41:01,129 INFO L226 Difference]: Without dead ends: 27069 [2021-11-23 12:41:01,142 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 12:41:01,143 INFO L933 BasicCegarLoop]: 1641 mSDtfsCounter, 4171 mSDsluCounter, 5887 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4171 SdHoareTripleChecker+Valid, 7528 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:01,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4171 Valid, 7528 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:41:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27069 states. [2021-11-23 12:41:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27069 to 19598. [2021-11-23 12:41:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19598 states, 19595 states have (on average 1.3070170961980097) internal successors, (25611), 19597 states have internal predecessors, (25611), 0 states have call successors, (0), 0 states 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 12:41:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19598 states to 19598 states and 25611 transitions. [2021-11-23 12:41:03,180 INFO L78 Accepts]: Start accepts. Automaton has 19598 states and 25611 transitions. Word has length 146 [2021-11-23 12:41:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:03,180 INFO L470 AbstractCegarLoop]: Abstraction has 19598 states and 25611 transitions. [2021-11-23 12:41:03,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 12:41:03,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19598 states and 25611 transitions. [2021-11-23 12:41:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:41:03,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:03,185 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:03,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 12:41:03,185 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:03,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash 801359180, now seen corresponding path program 1 times [2021-11-23 12:41:03,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:03,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933413819] [2021-11-23 12:41:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:03,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:41:03,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933413819] [2021-11-23 12:41:03,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933413819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:41:03,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:41:03,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:41:03,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400133961] [2021-11-23 12:41:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:41:03,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:41:03,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:41:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:41:03,234 INFO L87 Difference]: Start difference. First operand 19598 states and 25611 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 12:41:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:07,092 INFO L93 Difference]: Finished difference Result 52859 states and 71283 transitions. [2021-11-23 12:41:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:41:07,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 146 [2021-11-23 12:41:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:07,139 INFO L225 Difference]: With dead ends: 52859 [2021-11-23 12:41:07,139 INFO L226 Difference]: Without dead ends: 39831 [2021-11-23 12:41:07,154 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 12:41:07,155 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 3716 mSDsluCounter, 5834 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3716 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:07,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3716 Valid, 8030 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:41:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39831 states. [2021-11-23 12:41:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39831 to 20066. [2021-11-23 12:41:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20066 states, 20063 states have (on average 1.2998554553157553) internal successors, (26079), 20065 states have internal predecessors, (26079), 0 states have call successors, (0), 0 states 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 12:41:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20066 states to 20066 states and 26079 transitions. [2021-11-23 12:41:09,793 INFO L78 Accepts]: Start accepts. Automaton has 20066 states and 26079 transitions. Word has length 146 [2021-11-23 12:41:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:09,793 INFO L470 AbstractCegarLoop]: Abstraction has 20066 states and 26079 transitions. [2021-11-23 12:41:09,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 12:41:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 20066 states and 26079 transitions. [2021-11-23 12:41:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:41:09,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:09,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:09,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 12:41:09,797 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 12:41:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1077771766, now seen corresponding path program 1 times [2021-11-23 12:41:09,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:09,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901103824] [2021-11-23 12:41:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:09,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:41:09,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901103824] [2021-11-23 12:41:09,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901103824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:41:09,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:41:09,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:41:09,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764781030] [2021-11-23 12:41:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:41:09,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:41:09,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:41:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:41:09,850 INFO L87 Difference]: Start difference. First operand 20066 states and 26079 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 12:41:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:13,429 INFO L93 Difference]: Finished difference Result 45620 states and 60465 transitions. [2021-11-23 12:41:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:41:13,430 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 146 [2021-11-23 12:41:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:13,470 INFO L225 Difference]: With dead ends: 45620 [2021-11-23 12:41:13,471 INFO L226 Difference]: Without dead ends: 32129 [2021-11-23 12:41:13,485 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 12:41:13,485 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 1380 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:13,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 2767 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:41:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32129 states. [2021-11-23 12:41:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32129 to 32091. [2021-11-23 12:41:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32091 states, 32088 states have (on average 1.31248441785091) internal successors, (42115), 32090 states have internal predecessors, (42115), 0 states have call successors, (0), 0 states 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 12:41:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32091 states to 32091 states and 42115 transitions. [2021-11-23 12:41:16,969 INFO L78 Accepts]: Start accepts. Automaton has 32091 states and 42115 transitions. Word has length 146 [2021-11-23 12:41:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:16,969 INFO L470 AbstractCegarLoop]: Abstraction has 32091 states and 42115 transitions. [2021-11-23 12:41:16,969 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 12:41:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32091 states and 42115 transitions. [2021-11-23 12:41:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:41:16,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:16,973 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:16,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 12:41:16,974 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 12:41:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1232366825, now seen corresponding path program 1 times [2021-11-23 12:41:16,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:16,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417597324] [2021-11-23 12:41:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:16,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:41:17,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417597324] [2021-11-23 12:41:17,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417597324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:41:17,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:41:17,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:41:17,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114308832] [2021-11-23 12:41:17,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:41:17,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:41:17,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:17,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:41:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:41:17,031 INFO L87 Difference]: Start difference. First operand 32091 states and 42115 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 12:41:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:23,078 INFO L93 Difference]: Finished difference Result 77117 states and 103050 transitions. [2021-11-23 12:41:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:41:23,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 146 [2021-11-23 12:41:23,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:23,153 INFO L225 Difference]: With dead ends: 77117 [2021-11-23 12:41:23,153 INFO L226 Difference]: Without dead ends: 51605 [2021-11-23 12:41:23,176 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 12:41:23,176 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 3691 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 7100 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:23,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3691 Valid, 7100 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:41:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51605 states. [2021-11-23 12:41:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51605 to 32556. [2021-11-23 12:41:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32556 states, 32553 states have (on average 1.3037815255122416) internal successors, (42442), 32555 states have internal predecessors, (42442), 0 states have call successors, (0), 0 states 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 12:41:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32556 states to 32556 states and 42442 transitions. [2021-11-23 12:41:27,266 INFO L78 Accepts]: Start accepts. Automaton has 32556 states and 42442 transitions. Word has length 146 [2021-11-23 12:41:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:27,266 INFO L470 AbstractCegarLoop]: Abstraction has 32556 states and 42442 transitions. [2021-11-23 12:41:27,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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 12:41:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 32556 states and 42442 transitions. [2021-11-23 12:41:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:41:27,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:27,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:27,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 12:41:27,271 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 12:41:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2071400487, now seen corresponding path program 1 times [2021-11-23 12:41:27,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:27,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768232479] [2021-11-23 12:41:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:27,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:41:27,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:27,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768232479] [2021-11-23 12:41:27,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768232479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:41:27,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:41:27,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:41:27,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367708472] [2021-11-23 12:41:27,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:41:27,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:41:27,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:41:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:41:27,320 INFO L87 Difference]: Start difference. First operand 32556 states and 42442 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 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 12:41:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:36,904 INFO L93 Difference]: Finished difference Result 105400 states and 139137 transitions. [2021-11-23 12:41:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:41:36,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 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 146 [2021-11-23 12:41:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:37,013 INFO L225 Difference]: With dead ends: 105400 [2021-11-23 12:41:37,013 INFO L226 Difference]: Without dead ends: 79425 [2021-11-23 12:41:37,041 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 12:41:37,042 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 3871 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:37,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3871 Valid, 4770 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:41:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79425 states.