./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b77809112787d30d81c7c3c0f8f2a230e1ec99494e3dfc2397bd48db4468ad64 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:49:33,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:49:33,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:49:33,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:49:33,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:49:33,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:49:33,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:49:33,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:49:33,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:49:33,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:49:33,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:49:33,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:49:33,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:49:33,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:49:33,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:49:33,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:49:33,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:49:33,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:49:33,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:49:33,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:49:33,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:49:33,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:49:33,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:49:33,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:49:33,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:49:33,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:49:33,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:49:33,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:49:33,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:49:33,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:49:33,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:49:33,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:49:33,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:49:33,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:49:33,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:49:33,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:49:33,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:49:33,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:49:33,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:49:33,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:49:33,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:49:33,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:49:33,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:49:33,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:49:33,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:49:33,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:49:33,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:49:33,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:49:33,567 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:49:33,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:49:33,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:49:33,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:49:33,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:49:33,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:49:33,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:49:33,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:49:33,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:49:33,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:49:33,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:49:33,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:49:33,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:49:33,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:49:33,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:49:33,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:49:33,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:49:33,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:49:33,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:49:33,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:49:33,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:49:33,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:49:33,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:49:33,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:49:33,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:49:33,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:49:33,579 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_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b77809112787d30d81c7c3c0f8f2a230e1ec99494e3dfc2397bd48db4468ad64 [2021-11-22 14:49:33,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:49:33,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:49:33,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:49:33,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:49:33,985 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:49:33,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2021-11-22 14:49:34,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/data/07854c02c/9460d40173fb42808e1206014c6c0c74/FLAG112e03d5e [2021-11-22 14:49:34,771 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:49:34,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2021-11-22 14:49:34,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/data/07854c02c/9460d40173fb42808e1206014c6c0c74/FLAG112e03d5e [2021-11-22 14:49:35,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/data/07854c02c/9460d40173fb42808e1206014c6c0c74 [2021-11-22 14:49:35,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:49:35,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:49:35,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:49:35,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:49:35,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:49:35,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:35,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64968419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35, skipping insertion in model container [2021-11-22 14:49:35,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:35,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:49:35,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:49:35,441 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_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[913,926] [2021-11-22 14:49:35,505 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_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[5977,5990] [2021-11-22 14:49:35,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:49:35,759 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:49:35,776 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_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[913,926] [2021-11-22 14:49:35,793 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_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[5977,5990] [2021-11-22 14:49:35,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:49:35,914 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:49:35,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35 WrapperNode [2021-11-22 14:49:35,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:49:35,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:49:35,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:49:35,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:49:35,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:35,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,113 INFO L137 Inliner]: procedures = 74, calls = 87, calls flagged for inlining = 82, calls inlined = 321, statements flattened = 5175 [2021-11-22 14:49:36,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:49:36,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:49:36,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:49:36,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:49:36,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:49:36,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:49:36,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:49:36,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:49:36,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (1/1) ... [2021-11-22 14:49:36,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:49:36,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:49:36,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:49:36,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:49:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:49:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:49:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:49:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:49:36,669 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:49:36,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:49:40,159 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:49:40,203 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:49:40,203 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-22 14:49:40,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:40 BoogieIcfgContainer [2021-11-22 14:49:40,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:49:40,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:49:40,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:49:40,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:49:40,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:49:35" (1/3) ... [2021-11-22 14:49:40,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e6c1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:40, skipping insertion in model container [2021-11-22 14:49:40,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:35" (2/3) ... [2021-11-22 14:49:40,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e6c1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:40, skipping insertion in model container [2021-11-22 14:49:40,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:40" (3/3) ... [2021-11-22 14:49:40,227 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2021-11-22 14:49:40,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:49:40,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 14:49:40,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:49:40,339 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:49:40,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 14:49:40,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 2104 states, 2100 states have (on average 1.499047619047619) internal successors, (3148), 2103 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 14:49:40,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:40,451 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] [2021-11-22 14:49:40,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1944297238, now seen corresponding path program 1 times [2021-11-22 14:49:40,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:40,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163762538] [2021-11-22 14:49:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:40,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:40,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:40,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163762538] [2021-11-22 14:49:40,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163762538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:40,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:40,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:40,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630047149] [2021-11-22 14:49:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:40,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:40,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:40,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:40,875 INFO L87 Difference]: Start difference. First operand has 2104 states, 2100 states have (on average 1.499047619047619) internal successors, (3148), 2103 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:41,237 INFO L93 Difference]: Finished difference Result 4095 states and 6102 transitions. [2021-11-22 14:49:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:41,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-22 14:49:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:41,291 INFO L225 Difference]: With dead ends: 4095 [2021-11-22 14:49:41,291 INFO L226 Difference]: Without dead ends: 2159 [2021-11-22 14:49:41,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:41,311 INFO L933 BasicCegarLoop]: 3112 mSDtfsCounter, 3073 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:41,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3073 Valid, 3206 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:49:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2021-11-22 14:49:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 2138. [2021-11-22 14:49:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2135 states have (on average 1.4772833723653396) internal successors, (3154), 2137 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3154 transitions. [2021-11-22 14:49:41,581 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3154 transitions. Word has length 36 [2021-11-22 14:49:41,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:41,582 INFO L470 AbstractCegarLoop]: Abstraction has 2138 states and 3154 transitions. [2021-11-22 14:49:41,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3154 transitions. [2021-11-22 14:49:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 14:49:41,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:41,586 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] [2021-11-22 14:49:41,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:49:41,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1243564889, now seen corresponding path program 1 times [2021-11-22 14:49:41,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:41,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594518026] [2021-11-22 14:49:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:41,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:41,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:41,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594518026] [2021-11-22 14:49:41,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594518026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:41,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:41,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:41,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25623133] [2021-11-22 14:49:41,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:41,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:41,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:41,744 INFO L87 Difference]: Start difference. First operand 2138 states and 3154 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:41,875 INFO L93 Difference]: Finished difference Result 2307 states and 3389 transitions. [2021-11-22 14:49:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-22 14:49:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:41,893 INFO L225 Difference]: With dead ends: 2307 [2021-11-22 14:49:41,893 INFO L226 Difference]: Without dead ends: 2196 [2021-11-22 14:49:41,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:41,902 INFO L933 BasicCegarLoop]: 3092 mSDtfsCounter, 60 mSDsluCounter, 3053 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6145 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:41,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 6145 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-11-22 14:49:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2191. [2021-11-22 14:49:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2188 states have (on average 1.4748628884826325) internal successors, (3227), 2190 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3227 transitions. [2021-11-22 14:49:42,020 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3227 transitions. Word has length 37 [2021-11-22 14:49:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:42,021 INFO L470 AbstractCegarLoop]: Abstraction has 2191 states and 3227 transitions. [2021-11-22 14:49:42,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3227 transitions. [2021-11-22 14:49:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 14:49:42,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:42,025 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] [2021-11-22 14:49:42,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:49:42,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1731016242, now seen corresponding path program 1 times [2021-11-22 14:49:42,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366961452] [2021-11-22 14:49:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:42,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:42,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:42,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366961452] [2021-11-22 14:49:42,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366961452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:42,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:42,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:42,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076699846] [2021-11-22 14:49:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:42,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:42,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:42,114 INFO L87 Difference]: Start difference. First operand 2191 states and 3227 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:42,264 INFO L93 Difference]: Finished difference Result 2508 states and 3663 transitions. [2021-11-22 14:49:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-22 14:49:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:42,283 INFO L225 Difference]: With dead ends: 2508 [2021-11-22 14:49:42,283 INFO L226 Difference]: Without dead ends: 2344 [2021-11-22 14:49:42,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:42,297 INFO L933 BasicCegarLoop]: 3115 mSDtfsCounter, 3064 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:42,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3064 Valid, 3203 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-11-22 14:49:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2322. [2021-11-22 14:49:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2319 states have (on average 1.467442863303148) internal successors, (3403), 2321 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3403 transitions. [2021-11-22 14:49:42,507 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3403 transitions. Word has length 37 [2021-11-22 14:49:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:42,508 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 3403 transitions. [2021-11-22 14:49:42,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3403 transitions. [2021-11-22 14:49:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 14:49:42,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:42,524 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] [2021-11-22 14:49:42,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:49:42,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1278461036, now seen corresponding path program 1 times [2021-11-22 14:49:42,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:42,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621127109] [2021-11-22 14:49:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:42,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:42,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:42,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621127109] [2021-11-22 14:49:42,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621127109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:42,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:42,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:42,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149752100] [2021-11-22 14:49:42,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:42,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:42,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:42,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:42,655 INFO L87 Difference]: Start difference. First operand 2322 states and 3403 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:42,801 INFO L93 Difference]: Finished difference Result 2773 states and 4010 transitions. [2021-11-22 14:49:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:42,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-22 14:49:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:42,824 INFO L225 Difference]: With dead ends: 2773 [2021-11-22 14:49:42,824 INFO L226 Difference]: Without dead ends: 2478 [2021-11-22 14:49:42,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:42,834 INFO L933 BasicCegarLoop]: 3145 mSDtfsCounter, 48 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6225 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:42,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 6225 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-11-22 14:49:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2478. [2021-11-22 14:49:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2475 states have (on average 1.450909090909091) internal successors, (3591), 2477 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3591 transitions. [2021-11-22 14:49:42,968 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3591 transitions. Word has length 51 [2021-11-22 14:49:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:42,968 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 3591 transitions. [2021-11-22 14:49:42,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3591 transitions. [2021-11-22 14:49:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 14:49:42,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:42,972 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] [2021-11-22 14:49:42,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:49:42,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:42,974 INFO L85 PathProgramCache]: Analyzing trace with hash 971006567, now seen corresponding path program 1 times [2021-11-22 14:49:42,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:42,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213141773] [2021-11-22 14:49:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:42,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:43,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:43,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213141773] [2021-11-22 14:49:43,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213141773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:43,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:43,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406827588] [2021-11-22 14:49:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:43,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:43,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:43,105 INFO L87 Difference]: Start difference. First operand 2478 states and 3591 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:43,389 INFO L93 Difference]: Finished difference Result 2951 states and 4207 transitions. [2021-11-22 14:49:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-22 14:49:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:43,410 INFO L225 Difference]: With dead ends: 2951 [2021-11-22 14:49:43,410 INFO L226 Difference]: Without dead ends: 2586 [2021-11-22 14:49:43,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:43,414 INFO L933 BasicCegarLoop]: 3092 mSDtfsCounter, 3038 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:43,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3038 Valid, 3180 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-11-22 14:49:43,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2586. [2021-11-22 14:49:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2583 states have (on average 1.4397986837011227) internal successors, (3719), 2585 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3719 transitions. [2021-11-22 14:49:43,550 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3719 transitions. Word has length 55 [2021-11-22 14:49:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:43,550 INFO L470 AbstractCegarLoop]: Abstraction has 2586 states and 3719 transitions. [2021-11-22 14:49:43,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3719 transitions. [2021-11-22 14:49:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 14:49:43,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:43,554 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:43,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:49:43,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 510721370, now seen corresponding path program 1 times [2021-11-22 14:49:43,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25720609] [2021-11-22 14:49:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:43,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:43,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25720609] [2021-11-22 14:49:43,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25720609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:43,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:43,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:49:43,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016986351] [2021-11-22 14:49:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:43,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:49:43,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:49:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:43,636 INFO L87 Difference]: Start difference. First operand 2586 states and 3719 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:43,929 INFO L93 Difference]: Finished difference Result 3669 states and 5123 transitions. [2021-11-22 14:49:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:49:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-22 14:49:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:43,952 INFO L225 Difference]: With dead ends: 3669 [2021-11-22 14:49:43,953 INFO L226 Difference]: Without dead ends: 3246 [2021-11-22 14:49:43,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:49:43,958 INFO L933 BasicCegarLoop]: 3165 mSDtfsCounter, 302 mSDsluCounter, 9413 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 12578 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:43,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 12578 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-11-22 14:49:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2610. [2021-11-22 14:49:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2607 states have (on average 1.4342155734560798) internal successors, (3739), 2609 states have internal predecessors, (3739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3739 transitions. [2021-11-22 14:49:44,127 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3739 transitions. Word has length 56 [2021-11-22 14:49:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:44,130 INFO L470 AbstractCegarLoop]: Abstraction has 2610 states and 3739 transitions. [2021-11-22 14:49:44,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3739 transitions. [2021-11-22 14:49:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 14:49:44,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:44,134 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:44,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:49:44,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1212321244, now seen corresponding path program 1 times [2021-11-22 14:49:44,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:44,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059091148] [2021-11-22 14:49:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:44,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:44,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:44,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059091148] [2021-11-22 14:49:44,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059091148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:44,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:44,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:49:44,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529026748] [2021-11-22 14:49:44,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:44,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:49:44,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:44,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:49:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:44,246 INFO L87 Difference]: Start difference. First operand 2610 states and 3739 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:44,566 INFO L93 Difference]: Finished difference Result 3399 states and 4749 transitions. [2021-11-22 14:49:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:49:44,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-22 14:49:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:44,588 INFO L225 Difference]: With dead ends: 3399 [2021-11-22 14:49:44,589 INFO L226 Difference]: Without dead ends: 2901 [2021-11-22 14:49:44,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:49:44,593 INFO L933 BasicCegarLoop]: 3138 mSDtfsCounter, 280 mSDsluCounter, 9382 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 12520 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:44,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 12520 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:49:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-11-22 14:49:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2508. [2021-11-22 14:49:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2505 states have (on average 1.4403193612774452) internal successors, (3608), 2507 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3608 transitions. [2021-11-22 14:49:44,764 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3608 transitions. Word has length 56 [2021-11-22 14:49:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:44,765 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 3608 transitions. [2021-11-22 14:49:44,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3608 transitions. [2021-11-22 14:49:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 14:49:44,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:44,767 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:44,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:49:44,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1352929436, now seen corresponding path program 1 times [2021-11-22 14:49:44,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:44,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258830748] [2021-11-22 14:49:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:44,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:44,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:44,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258830748] [2021-11-22 14:49:44,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258830748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:44,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:44,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:49:44,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003237139] [2021-11-22 14:49:44,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:44,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:44,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:44,897 INFO L87 Difference]: Start difference. First operand 2508 states and 3608 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:45,143 INFO L93 Difference]: Finished difference Result 2558 states and 3668 transitions. [2021-11-22 14:49:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-22 14:49:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:45,165 INFO L225 Difference]: With dead ends: 2558 [2021-11-22 14:49:45,165 INFO L226 Difference]: Without dead ends: 2556 [2021-11-22 14:49:45,167 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 [2021-11-22 14:49:45,168 INFO L933 BasicCegarLoop]: 3092 mSDtfsCounter, 6152 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6152 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:45,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6152 Valid, 3161 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-22 14:49:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2506. [2021-11-22 14:49:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2504 states have (on average 1.4396964856230032) internal successors, (3605), 2505 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3605 transitions. [2021-11-22 14:49:45,348 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3605 transitions. Word has length 56 [2021-11-22 14:49:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:45,349 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 3605 transitions. [2021-11-22 14:49:45,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3605 transitions. [2021-11-22 14:49:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 14:49:45,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:45,352 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:45,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:49:45,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1008873000, now seen corresponding path program 1 times [2021-11-22 14:49:45,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:45,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818852539] [2021-11-22 14:49:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:45,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:45,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:45,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818852539] [2021-11-22 14:49:45,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818852539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:49:45,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907166064] [2021-11-22 14:49:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:45,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:49:45,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:49:45,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:49:45,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:49:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:45,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:49:45,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:49:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:46,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:49:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:47,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907166064] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:49:47,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:49:47,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2021-11-22 14:49:47,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617900715] [2021-11-22 14:49:47,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:49:47,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:49:47,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:49:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:49:47,019 INFO L87 Difference]: Start difference. First operand 2506 states and 3605 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:47,442 INFO L93 Difference]: Finished difference Result 3191 states and 4475 transitions. [2021-11-22 14:49:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:49:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 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 57 [2021-11-22 14:49:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:47,471 INFO L225 Difference]: With dead ends: 3191 [2021-11-22 14:49:47,471 INFO L226 Difference]: Without dead ends: 3189 [2021-11-22 14:49:47,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:49:47,482 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 3186 mSDsluCounter, 9689 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 12856 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:47,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3186 Valid, 12856 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:49:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-11-22 14:49:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2778. [2021-11-22 14:49:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2776 states have (on average 1.425792507204611) internal successors, (3958), 2777 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3958 transitions. [2021-11-22 14:49:47,725 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3958 transitions. Word has length 57 [2021-11-22 14:49:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:47,725 INFO L470 AbstractCegarLoop]: Abstraction has 2778 states and 3958 transitions. [2021-11-22 14:49:47,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:47,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3958 transitions. [2021-11-22 14:49:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 14:49:47,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:47,729 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:47,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 14:49:47,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e8f87b-5a86-4fff-b97b-2c6b86a7b822/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:49:47,942 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 146635335, now seen corresponding path program 2 times [2021-11-22 14:49:47,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510807905] [2021-11-22 14:49:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:47,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:47,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:47,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510807905] [2021-11-22 14:49:47,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510807905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:47,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:47,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:47,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785274884] [2021-11-22 14:49:47,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:47,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:47,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:47,992 INFO L87 Difference]: Start difference. First operand 2778 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:48,178 INFO L93 Difference]: Finished difference Result 3285 states and 4618 transitions. [2021-11-22 14:49:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-22 14:49:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:48,198 INFO L225 Difference]: With dead ends: 3285 [2021-11-22 14:49:48,199 INFO L226 Difference]: Without dead ends: 2689 [2021-11-22 14:49:48,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:48,202 INFO L933 BasicCegarLoop]: 3126 mSDtfsCounter, 3042 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:48,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 3195 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:48,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-11-22 14:49:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2663. [2021-11-22 14:49:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2661 states have (on average 1.4302893649004134) internal successors, (3806), 2662 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3806 transitions. [2021-11-22 14:49:48,401 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3806 transitions. Word has length 72 [2021-11-22 14:49:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:48,401 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3806 transitions. [2021-11-22 14:49:48,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3806 transitions. [2021-11-22 14:49:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 14:49:48,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:48,405 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:48,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:49:48,406 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:48,406 INFO L85 PathProgramCache]: Analyzing trace with hash 347515233, now seen corresponding path program 1 times [2021-11-22 14:49:48,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:48,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753934443] [2021-11-22 14:49:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:48,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:49:48,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:48,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753934443] [2021-11-22 14:49:48,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753934443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:48,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:48,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:48,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888131399] [2021-11-22 14:49:48,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:48,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:48,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:48,454 INFO L87 Difference]: Start difference. First operand 2663 states and 3806 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:48,650 INFO L93 Difference]: Finished difference Result 3317 states and 4633 transitions. [2021-11-22 14:49:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 84 [2021-11-22 14:49:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:48,667 INFO L225 Difference]: With dead ends: 3317 [2021-11-22 14:49:48,667 INFO L226 Difference]: Without dead ends: 2681 [2021-11-22 14:49:48,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:48,671 INFO L933 BasicCegarLoop]: 3099 mSDtfsCounter, 3027 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:48,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3027 Valid, 3183 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-11-22 14:49:48,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2663. [2021-11-22 14:49:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2661 states have (on average 1.4227733934611049) internal successors, (3786), 2662 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3786 transitions. [2021-11-22 14:49:48,846 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3786 transitions. Word has length 84 [2021-11-22 14:49:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:48,847 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3786 transitions. [2021-11-22 14:49:48,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3786 transitions. [2021-11-22 14:49:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 14:49:48,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:48,851 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:48,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:49:48,851 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2043608408, now seen corresponding path program 1 times [2021-11-22 14:49:48,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889760796] [2021-11-22 14:49:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:48,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:49:48,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:48,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889760796] [2021-11-22 14:49:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889760796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:48,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:48,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:48,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833300535] [2021-11-22 14:49:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:48,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:48,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:48,898 INFO L87 Difference]: Start difference. First operand 2663 states and 3786 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:49,060 INFO L93 Difference]: Finished difference Result 2927 states and 4104 transitions. [2021-11-22 14:49:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 85 [2021-11-22 14:49:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:49,069 INFO L225 Difference]: With dead ends: 2927 [2021-11-22 14:49:49,070 INFO L226 Difference]: Without dead ends: 2021 [2021-11-22 14:49:49,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:49,074 INFO L933 BasicCegarLoop]: 3125 mSDtfsCounter, 56 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:49,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 6182 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-11-22 14:49:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2021. [2021-11-22 14:49:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2020 states have (on average 1.4801980198019802) internal successors, (2990), 2020 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2990 transitions. [2021-11-22 14:49:49,239 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2990 transitions. Word has length 85 [2021-11-22 14:49:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:49,239 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 2990 transitions. [2021-11-22 14:49:49,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2990 transitions. [2021-11-22 14:49:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:49,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:49,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:49,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:49:49,244 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash 453187984, now seen corresponding path program 1 times [2021-11-22 14:49:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:49,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612593648] [2021-11-22 14:49:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:49,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:49,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:49,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612593648] [2021-11-22 14:49:49,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612593648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:49,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:49,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:49,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758781971] [2021-11-22 14:49:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:49,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:49,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:49,309 INFO L87 Difference]: Start difference. First operand 2021 states and 2990 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:49,464 INFO L93 Difference]: Finished difference Result 4036 states and 5973 transitions. [2021-11-22 14:49:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:49,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:49,471 INFO L225 Difference]: With dead ends: 4036 [2021-11-22 14:49:49,472 INFO L226 Difference]: Without dead ends: 2021 [2021-11-22 14:49:49,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:49,477 INFO L933 BasicCegarLoop]: 2988 mSDtfsCounter, 2984 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:49,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2984 Valid, 2989 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-11-22 14:49:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2021. [2021-11-22 14:49:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2020 states have (on average 1.4797029702970297) internal successors, (2989), 2020 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2989 transitions. [2021-11-22 14:49:49,586 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2989 transitions. Word has length 176 [2021-11-22 14:49:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:49,586 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 2989 transitions. [2021-11-22 14:49:49,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2989 transitions. [2021-11-22 14:49:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:49,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:49,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:49,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 14:49:49,591 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:49,592 INFO L85 PathProgramCache]: Analyzing trace with hash -195404786, now seen corresponding path program 1 times [2021-11-22 14:49:49,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:49,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547731969] [2021-11-22 14:49:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:49,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:49,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547731969] [2021-11-22 14:49:49,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547731969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:49,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:49,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:49,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490863274] [2021-11-22 14:49:49,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:49,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:49,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:49,661 INFO L87 Difference]: Start difference. First operand 2021 states and 2989 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:49,807 INFO L93 Difference]: Finished difference Result 4028 states and 5956 transitions. [2021-11-22 14:49:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:49,813 INFO L225 Difference]: With dead ends: 4028 [2021-11-22 14:49:49,814 INFO L226 Difference]: Without dead ends: 2021 [2021-11-22 14:49:49,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:49,819 INFO L933 BasicCegarLoop]: 2987 mSDtfsCounter, 2975 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:49,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2975 Valid, 2988 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-11-22 14:49:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2021. [2021-11-22 14:49:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2020 states have (on average 1.4792079207920792) internal successors, (2988), 2020 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2988 transitions. [2021-11-22 14:49:49,929 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2988 transitions. Word has length 176 [2021-11-22 14:49:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:49,930 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 2988 transitions. [2021-11-22 14:49:49,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2988 transitions. [2021-11-22 14:49:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:49,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:49,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:49,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 14:49:49,934 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -693961588, now seen corresponding path program 1 times [2021-11-22 14:49:49,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:49,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378584956] [2021-11-22 14:49:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:49,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:50,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:50,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378584956] [2021-11-22 14:49:50,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378584956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:50,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:50,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:49:50,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707382436] [2021-11-22 14:49:50,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:50,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:50,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:50,039 INFO L87 Difference]: Start difference. First operand 2021 states and 2988 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:50,335 INFO L93 Difference]: Finished difference Result 5766 states and 8501 transitions. [2021-11-22 14:49:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:50,347 INFO L225 Difference]: With dead ends: 5766 [2021-11-22 14:49:50,347 INFO L226 Difference]: Without dead ends: 3766 [2021-11-22 14:49:50,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:50,355 INFO L933 BasicCegarLoop]: 2982 mSDtfsCounter, 2820 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 5677 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:49:50,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 5677 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:49:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2021-11-22 14:49:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3764. [2021-11-22 14:49:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4727610948711134) internal successors, (5542), 3763 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5542 transitions. [2021-11-22 14:49:50,602 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5542 transitions. Word has length 176 [2021-11-22 14:49:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:50,602 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5542 transitions. [2021-11-22 14:49:50,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5542 transitions. [2021-11-22 14:49:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:50,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:50,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:50,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 14:49:50,607 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash -610400052, now seen corresponding path program 1 times [2021-11-22 14:49:50,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374926153] [2021-11-22 14:49:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:50,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:50,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:50,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374926153] [2021-11-22 14:49:50,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374926153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:50,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:50,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:49:50,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640633241] [2021-11-22 14:49:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:50,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:50,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:50,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:50,679 INFO L87 Difference]: Start difference. First operand 3764 states and 5542 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:50,901 INFO L93 Difference]: Finished difference Result 7506 states and 11049 transitions. [2021-11-22 14:49:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:50,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:50,913 INFO L225 Difference]: With dead ends: 7506 [2021-11-22 14:49:50,914 INFO L226 Difference]: Without dead ends: 3764 [2021-11-22 14:49:50,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:50,922 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 2960 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 2976 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 [2021-11-22 14:49:50,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2960 Valid, 2976 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-11-22 14:49:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3764. [2021-11-22 14:49:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.470635131543981) internal successors, (5534), 3763 states have internal predecessors, (5534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5534 transitions. [2021-11-22 14:49:51,134 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5534 transitions. Word has length 176 [2021-11-22 14:49:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:51,135 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5534 transitions. [2021-11-22 14:49:51,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5534 transitions. [2021-11-22 14:49:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:51,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:51,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 14:49:51,139 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2131725172, now seen corresponding path program 1 times [2021-11-22 14:49:51,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:51,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115808537] [2021-11-22 14:49:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:51,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:51,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115808537] [2021-11-22 14:49:51,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115808537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:51,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:51,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:49:51,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615297786] [2021-11-22 14:49:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:51,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:49:51,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:49:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:51,214 INFO L87 Difference]: Start difference. First operand 3764 states and 5534 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:51,497 INFO L93 Difference]: Finished difference Result 7505 states and 11032 transitions. [2021-11-22 14:49:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:49:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:51,508 INFO L225 Difference]: With dead ends: 7505 [2021-11-22 14:49:51,508 INFO L226 Difference]: Without dead ends: 3764 [2021-11-22 14:49:51,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:49:51,517 INFO L933 BasicCegarLoop]: 2971 mSDtfsCounter, 2954 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 2971 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 [2021-11-22 14:49:51,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2954 Valid, 2971 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-11-22 14:49:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3764. [2021-11-22 14:49:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4685091682168483) internal successors, (5526), 3763 states have internal predecessors, (5526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5526 transitions. [2021-11-22 14:49:51,738 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5526 transitions. Word has length 176 [2021-11-22 14:49:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:51,739 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5526 transitions. [2021-11-22 14:49:51,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5526 transitions. [2021-11-22 14:49:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:51,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:51,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:51,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 14:49:51,743 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1551973066, now seen corresponding path program 1 times [2021-11-22 14:49:51,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:51,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532330139] [2021-11-22 14:49:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:51,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:51,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:51,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532330139] [2021-11-22 14:49:51,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532330139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:51,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:51,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:51,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471597744] [2021-11-22 14:49:51,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:51,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:51,822 INFO L87 Difference]: Start difference. First operand 3764 states and 5526 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:52,381 INFO L93 Difference]: Finished difference Result 11117 states and 16310 transitions. [2021-11-22 14:49:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:52,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:52,403 INFO L225 Difference]: With dead ends: 11117 [2021-11-22 14:49:52,404 INFO L226 Difference]: Without dead ends: 7377 [2021-11-22 14:49:52,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:52,413 INFO L933 BasicCegarLoop]: 5700 mSDtfsCounter, 5918 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5918 SdHoareTripleChecker+Valid, 8436 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 [2021-11-22 14:49:52,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5918 Valid, 8436 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2021-11-22 14:49:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 3764. [2021-11-22 14:49:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4677119319691736) internal successors, (5523), 3763 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5523 transitions. [2021-11-22 14:49:52,733 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5523 transitions. Word has length 176 [2021-11-22 14:49:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:52,733 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5523 transitions. [2021-11-22 14:49:52,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5523 transitions. [2021-11-22 14:49:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:52,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:52,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:52,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 14:49:52,739 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash 146781388, now seen corresponding path program 1 times [2021-11-22 14:49:52,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:52,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350415760] [2021-11-22 14:49:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:52,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:52,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:52,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350415760] [2021-11-22 14:49:52,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350415760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:52,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:52,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:52,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286687282] [2021-11-22 14:49:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:52,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:52,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:52,812 INFO L87 Difference]: Start difference. First operand 3764 states and 5523 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:53,440 INFO L93 Difference]: Finished difference Result 11115 states and 16299 transitions. [2021-11-22 14:49:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:53,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:53,460 INFO L225 Difference]: With dead ends: 11115 [2021-11-22 14:49:53,460 INFO L226 Difference]: Without dead ends: 7376 [2021-11-22 14:49:53,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:53,469 INFO L933 BasicCegarLoop]: 5695 mSDtfsCounter, 5913 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5913 SdHoareTripleChecker+Valid, 8428 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 [2021-11-22 14:49:53,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5913 Valid, 8428 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2021-11-22 14:49:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 3764. [2021-11-22 14:49:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.466914695721499) internal successors, (5520), 3763 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5520 transitions. [2021-11-22 14:49:53,847 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5520 transitions. Word has length 176 [2021-11-22 14:49:53,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:53,848 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5520 transitions. [2021-11-22 14:49:53,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5520 transitions. [2021-11-22 14:49:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:53,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:53,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:53,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 14:49:53,854 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2041115274, now seen corresponding path program 1 times [2021-11-22 14:49:53,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:53,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145340878] [2021-11-22 14:49:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:53,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:53,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145340878] [2021-11-22 14:49:53,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145340878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:53,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:53,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:53,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97440818] [2021-11-22 14:49:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:53,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:53,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:53,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:53,935 INFO L87 Difference]: Start difference. First operand 3764 states and 5520 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:54,919 INFO L93 Difference]: Finished difference Result 11113 states and 16288 transitions. [2021-11-22 14:49:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:54,948 INFO L225 Difference]: With dead ends: 11113 [2021-11-22 14:49:54,948 INFO L226 Difference]: Without dead ends: 7375 [2021-11-22 14:49:54,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:54,960 INFO L933 BasicCegarLoop]: 5690 mSDtfsCounter, 5908 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5908 SdHoareTripleChecker+Valid, 8420 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 [2021-11-22 14:49:54,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5908 Valid, 8420 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2021-11-22 14:49:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 3764. [2021-11-22 14:49:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.466117459473824) internal successors, (5517), 3763 states have internal predecessors, (5517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5517 transitions. [2021-11-22 14:49:55,382 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5517 transitions. Word has length 176 [2021-11-22 14:49:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:55,383 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5517 transitions. [2021-11-22 14:49:55,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5517 transitions. [2021-11-22 14:49:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:55,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:55,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:55,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 14:49:55,389 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -807271156, now seen corresponding path program 1 times [2021-11-22 14:49:55,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:55,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121545477] [2021-11-22 14:49:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:55,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:55,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:55,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121545477] [2021-11-22 14:49:55,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121545477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:55,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:55,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:55,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56966390] [2021-11-22 14:49:55,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:55,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:55,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:55,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:55,462 INFO L87 Difference]: Start difference. First operand 3764 states and 5517 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:56,341 INFO L93 Difference]: Finished difference Result 11111 states and 16277 transitions. [2021-11-22 14:49:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:56,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:56,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:56,363 INFO L225 Difference]: With dead ends: 11111 [2021-11-22 14:49:56,363 INFO L226 Difference]: Without dead ends: 7374 [2021-11-22 14:49:56,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:56,373 INFO L933 BasicCegarLoop]: 5685 mSDtfsCounter, 5903 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5903 SdHoareTripleChecker+Valid, 8412 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 [2021-11-22 14:49:56,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5903 Valid, 8412 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:56,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7374 states. [2021-11-22 14:49:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7374 to 3764. [2021-11-22 14:49:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4653202232261493) internal successors, (5514), 3763 states have internal predecessors, (5514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5514 transitions. [2021-11-22 14:49:56,816 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5514 transitions. Word has length 176 [2021-11-22 14:49:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:56,817 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5514 transitions. [2021-11-22 14:49:56,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5514 transitions. [2021-11-22 14:49:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:56,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:56,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:56,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 14:49:56,821 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1730438582, now seen corresponding path program 1 times [2021-11-22 14:49:56,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:56,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683080289] [2021-11-22 14:49:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:56,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:56,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:56,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683080289] [2021-11-22 14:49:56,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683080289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:56,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:56,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:56,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274685426] [2021-11-22 14:49:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:56,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:56,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:56,899 INFO L87 Difference]: Start difference. First operand 3764 states and 5514 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:57,811 INFO L93 Difference]: Finished difference Result 11107 states and 16262 transitions. [2021-11-22 14:49:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:57,836 INFO L225 Difference]: With dead ends: 11107 [2021-11-22 14:49:57,836 INFO L226 Difference]: Without dead ends: 7372 [2021-11-22 14:49:57,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:57,849 INFO L933 BasicCegarLoop]: 5678 mSDtfsCounter, 5897 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5897 SdHoareTripleChecker+Valid, 8400 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 [2021-11-22 14:49:57,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5897 Valid, 8400 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:57,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2021-11-22 14:49:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 3764. [2021-11-22 14:49:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4645229869784746) internal successors, (5511), 3763 states have internal predecessors, (5511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5511 transitions. [2021-11-22 14:49:58,302 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5511 transitions. Word has length 176 [2021-11-22 14:49:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:58,302 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5511 transitions. [2021-11-22 14:49:58,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5511 transitions. [2021-11-22 14:49:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:58,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:58,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:58,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 14:49:58,306 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1995086072, now seen corresponding path program 1 times [2021-11-22 14:49:58,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:58,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655940062] [2021-11-22 14:49:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:58,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:58,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655940062] [2021-11-22 14:49:58,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655940062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:58,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:58,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:58,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474134839] [2021-11-22 14:49:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:58,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:58,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:58,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:58,373 INFO L87 Difference]: Start difference. First operand 3764 states and 5511 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:49:59,163 INFO L93 Difference]: Finished difference Result 11105 states and 16251 transitions. [2021-11-22 14:49:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:49:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:49:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:49:59,187 INFO L225 Difference]: With dead ends: 11105 [2021-11-22 14:49:59,187 INFO L226 Difference]: Without dead ends: 7371 [2021-11-22 14:49:59,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:49:59,197 INFO L933 BasicCegarLoop]: 5673 mSDtfsCounter, 5892 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5892 SdHoareTripleChecker+Valid, 8392 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 [2021-11-22 14:49:59,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5892 Valid, 8392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:49:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7371 states. [2021-11-22 14:49:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7371 to 3764. [2021-11-22 14:49:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4637257507308) internal successors, (5508), 3763 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5508 transitions. [2021-11-22 14:49:59,682 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5508 transitions. Word has length 176 [2021-11-22 14:49:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:49:59,683 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5508 transitions. [2021-11-22 14:49:59,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:49:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5508 transitions. [2021-11-22 14:49:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:49:59,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:49:59,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:49:59,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 14:49:59,686 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:49:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:49:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash -63960438, now seen corresponding path program 1 times [2021-11-22 14:49:59,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:49:59,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461105015] [2021-11-22 14:49:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:49:59,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:49:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:49:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:49:59,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:49:59,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461105015] [2021-11-22 14:49:59,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461105015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:49:59,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:49:59,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:49:59,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795038567] [2021-11-22 14:49:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:49:59,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:49:59,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:49:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:49:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:49:59,746 INFO L87 Difference]: Start difference. First operand 3764 states and 5508 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:00,914 INFO L93 Difference]: Finished difference Result 11103 states and 16240 transitions. [2021-11-22 14:50:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:00,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:00,938 INFO L225 Difference]: With dead ends: 11103 [2021-11-22 14:50:00,939 INFO L226 Difference]: Without dead ends: 7370 [2021-11-22 14:50:00,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:00,950 INFO L933 BasicCegarLoop]: 3248 mSDtfsCounter, 8309 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8309 SdHoareTripleChecker+Valid, 5964 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:00,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8309 Valid, 5964 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:00,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2021-11-22 14:50:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 3764. [2021-11-22 14:50:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4629285144831252) internal successors, (5505), 3763 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5505 transitions. [2021-11-22 14:50:01,472 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5505 transitions. Word has length 176 [2021-11-22 14:50:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:01,473 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5505 transitions. [2021-11-22 14:50:01,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5505 transitions. [2021-11-22 14:50:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:01,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:01,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:01,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 14:50:01,477 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1387139384, now seen corresponding path program 1 times [2021-11-22 14:50:01,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:01,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486574452] [2021-11-22 14:50:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:01,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:01,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:01,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486574452] [2021-11-22 14:50:01,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486574452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:01,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:01,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:01,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313825036] [2021-11-22 14:50:01,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:01,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:01,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:01,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:01,586 INFO L87 Difference]: Start difference. First operand 3764 states and 5505 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:02,282 INFO L93 Difference]: Finished difference Result 11101 states and 16229 transitions. [2021-11-22 14:50:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:02,292 INFO L225 Difference]: With dead ends: 11101 [2021-11-22 14:50:02,293 INFO L226 Difference]: Without dead ends: 7369 [2021-11-22 14:50:02,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:02,302 INFO L933 BasicCegarLoop]: 5663 mSDtfsCounter, 5882 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5882 SdHoareTripleChecker+Valid, 8376 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:02,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5882 Valid, 8376 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2021-11-22 14:50:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 3764. [2021-11-22 14:50:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4621312782354505) internal successors, (5502), 3763 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5502 transitions. [2021-11-22 14:50:02,819 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5502 transitions. Word has length 176 [2021-11-22 14:50:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:02,820 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5502 transitions. [2021-11-22 14:50:02,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5502 transitions. [2021-11-22 14:50:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:02,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:02,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:02,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 14:50:02,823 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 509840074, now seen corresponding path program 1 times [2021-11-22 14:50:02,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:02,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700093543] [2021-11-22 14:50:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:02,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:02,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:02,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700093543] [2021-11-22 14:50:02,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700093543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:02,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:02,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:02,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64894771] [2021-11-22 14:50:02,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:02,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:02,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:02,887 INFO L87 Difference]: Start difference. First operand 3764 states and 5502 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:03,669 INFO L93 Difference]: Finished difference Result 11099 states and 16218 transitions. [2021-11-22 14:50:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:03,684 INFO L225 Difference]: With dead ends: 11099 [2021-11-22 14:50:03,684 INFO L226 Difference]: Without dead ends: 7368 [2021-11-22 14:50:03,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:03,697 INFO L933 BasicCegarLoop]: 5658 mSDtfsCounter, 5877 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5877 SdHoareTripleChecker+Valid, 8368 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 [2021-11-22 14:50:03,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5877 Valid, 8368 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:50:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2021-11-22 14:50:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 3764. [2021-11-22 14:50:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4613340419877756) internal successors, (5499), 3763 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5499 transitions. [2021-11-22 14:50:04,184 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5499 transitions. Word has length 176 [2021-11-22 14:50:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:04,185 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5499 transitions. [2021-11-22 14:50:04,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5499 transitions. [2021-11-22 14:50:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:04,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:04,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:04,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 14:50:04,188 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 848127624, now seen corresponding path program 1 times [2021-11-22 14:50:04,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:04,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866194589] [2021-11-22 14:50:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:04,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:04,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:04,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866194589] [2021-11-22 14:50:04,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866194589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:04,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:04,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:04,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182832422] [2021-11-22 14:50:04,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:04,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:04,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:04,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:04,254 INFO L87 Difference]: Start difference. First operand 3764 states and 5499 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:05,055 INFO L93 Difference]: Finished difference Result 11097 states and 16207 transitions. [2021-11-22 14:50:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:05,070 INFO L225 Difference]: With dead ends: 11097 [2021-11-22 14:50:05,071 INFO L226 Difference]: Without dead ends: 7367 [2021-11-22 14:50:05,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:05,080 INFO L933 BasicCegarLoop]: 5653 mSDtfsCounter, 5872 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5872 SdHoareTripleChecker+Valid, 8360 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 [2021-11-22 14:50:05,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5872 Valid, 8360 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:50:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7367 states. [2021-11-22 14:50:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7367 to 3764. [2021-11-22 14:50:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.460536805740101) internal successors, (5496), 3763 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5496 transitions. [2021-11-22 14:50:05,658 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5496 transitions. Word has length 176 [2021-11-22 14:50:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5496 transitions. [2021-11-22 14:50:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5496 transitions. [2021-11-22 14:50:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:05,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:05,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:05,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 14:50:05,662 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1274682122, now seen corresponding path program 1 times [2021-11-22 14:50:05,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:05,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547101825] [2021-11-22 14:50:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:05,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:05,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:05,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547101825] [2021-11-22 14:50:05,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547101825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:05,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:05,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:05,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469689713] [2021-11-22 14:50:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:05,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:05,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:05,759 INFO L87 Difference]: Start difference. First operand 3764 states and 5496 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:06,892 INFO L93 Difference]: Finished difference Result 10897 states and 15914 transitions. [2021-11-22 14:50:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:06,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:06,902 INFO L225 Difference]: With dead ends: 10897 [2021-11-22 14:50:06,902 INFO L226 Difference]: Without dead ends: 7168 [2021-11-22 14:50:06,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:06,912 INFO L933 BasicCegarLoop]: 5443 mSDtfsCounter, 5723 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5723 SdHoareTripleChecker+Valid, 8113 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:06,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5723 Valid, 8113 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:50:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7168 states. [2021-11-22 14:50:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7168 to 3764. [2021-11-22 14:50:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4597395694924262) internal successors, (5493), 3763 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5493 transitions. [2021-11-22 14:50:07,420 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5493 transitions. Word has length 176 [2021-11-22 14:50:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:07,420 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5493 transitions. [2021-11-22 14:50:07,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5493 transitions. [2021-11-22 14:50:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:07,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:07,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:07,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 14:50:07,423 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:07,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 734252616, now seen corresponding path program 1 times [2021-11-22 14:50:07,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:07,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288023072] [2021-11-22 14:50:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:07,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:07,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:07,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288023072] [2021-11-22 14:50:07,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288023072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:07,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:07,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:50:07,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233254646] [2021-11-22 14:50:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:07,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:50:07,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:50:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:50:07,481 INFO L87 Difference]: Start difference. First operand 3764 states and 5493 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:08,177 INFO L93 Difference]: Finished difference Result 7491 states and 10934 transitions. [2021-11-22 14:50:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:50:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:08,184 INFO L225 Difference]: With dead ends: 7491 [2021-11-22 14:50:08,184 INFO L226 Difference]: Without dead ends: 3764 [2021-11-22 14:50:08,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:50:08,190 INFO L933 BasicCegarLoop]: 2912 mSDtfsCounter, 2755 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2755 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:08,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2755 Valid, 3050 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-11-22 14:50:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3764. [2021-11-22 14:50:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4496412436885464) internal successors, (5455), 3763 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5455 transitions. [2021-11-22 14:50:08,667 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5455 transitions. Word has length 176 [2021-11-22 14:50:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:08,667 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5455 transitions. [2021-11-22 14:50:08,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5455 transitions. [2021-11-22 14:50:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:08,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:08,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:08,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 14:50:08,669 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1226876280, now seen corresponding path program 1 times [2021-11-22 14:50:08,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:08,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859469872] [2021-11-22 14:50:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:08,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:08,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:08,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859469872] [2021-11-22 14:50:08,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859469872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:08,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:08,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:08,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141445120] [2021-11-22 14:50:08,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:08,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:08,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:08,736 INFO L87 Difference]: Start difference. First operand 3764 states and 5455 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:09,873 INFO L93 Difference]: Finished difference Result 10891 states and 15787 transitions. [2021-11-22 14:50:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:09,880 INFO L225 Difference]: With dead ends: 10891 [2021-11-22 14:50:09,880 INFO L226 Difference]: Without dead ends: 7165 [2021-11-22 14:50:09,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:09,884 INFO L933 BasicCegarLoop]: 5396 mSDtfsCounter, 5675 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 8041 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:09,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 8041 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2021-11-22 14:50:10,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 3764. [2021-11-22 14:50:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4488440074408717) internal successors, (5452), 3763 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5452 transitions. [2021-11-22 14:50:10,240 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5452 transitions. Word has length 176 [2021-11-22 14:50:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:10,240 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5452 transitions. [2021-11-22 14:50:10,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5452 transitions. [2021-11-22 14:50:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:10,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:10,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:10,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 14:50:10,243 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1280221194, now seen corresponding path program 1 times [2021-11-22 14:50:10,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297992134] [2021-11-22 14:50:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:10,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:10,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:10,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297992134] [2021-11-22 14:50:10,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297992134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:10,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:10,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:10,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143354506] [2021-11-22 14:50:10,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:10,295 INFO L87 Difference]: Start difference. First operand 3764 states and 5452 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:11,453 INFO L93 Difference]: Finished difference Result 10889 states and 15776 transitions. [2021-11-22 14:50:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:11,463 INFO L225 Difference]: With dead ends: 10889 [2021-11-22 14:50:11,464 INFO L226 Difference]: Without dead ends: 7164 [2021-11-22 14:50:11,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:11,469 INFO L933 BasicCegarLoop]: 3161 mSDtfsCounter, 7929 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7929 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:11,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7929 Valid, 5803 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7164 states. [2021-11-22 14:50:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7164 to 3764. [2021-11-22 14:50:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.448046771193197) internal successors, (5449), 3763 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5449 transitions. [2021-11-22 14:50:11,848 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5449 transitions. Word has length 176 [2021-11-22 14:50:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:11,849 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5449 transitions. [2021-11-22 14:50:11,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5449 transitions. [2021-11-22 14:50:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:11,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:11,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:11,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 14:50:11,851 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -855662008, now seen corresponding path program 1 times [2021-11-22 14:50:11,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144468316] [2021-11-22 14:50:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:11,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:11,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:11,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144468316] [2021-11-22 14:50:11,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144468316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:11,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:11,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:11,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293596119] [2021-11-22 14:50:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:11,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:11,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:11,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:11,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:11,903 INFO L87 Difference]: Start difference. First operand 3764 states and 5449 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:12,763 INFO L93 Difference]: Finished difference Result 10887 states and 15765 transitions. [2021-11-22 14:50:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:12,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:12,770 INFO L225 Difference]: With dead ends: 10887 [2021-11-22 14:50:12,770 INFO L226 Difference]: Without dead ends: 7163 [2021-11-22 14:50:12,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:12,774 INFO L933 BasicCegarLoop]: 5386 mSDtfsCounter, 5665 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5665 SdHoareTripleChecker+Valid, 8025 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:12,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5665 Valid, 8025 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7163 states. [2021-11-22 14:50:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7163 to 3764. [2021-11-22 14:50:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.447249534945522) internal successors, (5446), 3763 states have internal predecessors, (5446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5446 transitions. [2021-11-22 14:50:13,091 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5446 transitions. Word has length 176 [2021-11-22 14:50:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:13,092 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5446 transitions. [2021-11-22 14:50:13,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5446 transitions. [2021-11-22 14:50:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:13,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:13,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:13,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 14:50:13,094 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -786014134, now seen corresponding path program 1 times [2021-11-22 14:50:13,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:13,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891646579] [2021-11-22 14:50:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:13,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:13,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:13,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891646579] [2021-11-22 14:50:13,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891646579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:13,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:13,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:13,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761629376] [2021-11-22 14:50:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:13,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:13,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:13,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:13,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:13,136 INFO L87 Difference]: Start difference. First operand 3764 states and 5446 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:13,911 INFO L93 Difference]: Finished difference Result 10885 states and 15754 transitions. [2021-11-22 14:50:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:13,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:13,918 INFO L225 Difference]: With dead ends: 10885 [2021-11-22 14:50:13,918 INFO L226 Difference]: Without dead ends: 7162 [2021-11-22 14:50:13,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:13,921 INFO L933 BasicCegarLoop]: 5381 mSDtfsCounter, 5660 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5660 SdHoareTripleChecker+Valid, 8017 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:13,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5660 Valid, 8017 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2021-11-22 14:50:14,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 3764. [2021-11-22 14:50:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4464522986978474) internal successors, (5443), 3763 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5443 transitions. [2021-11-22 14:50:14,253 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5443 transitions. Word has length 176 [2021-11-22 14:50:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:14,253 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5443 transitions. [2021-11-22 14:50:14,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5443 transitions. [2021-11-22 14:50:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:14,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:14,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:14,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 14:50:14,255 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash -368125432, now seen corresponding path program 1 times [2021-11-22 14:50:14,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:14,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105243817] [2021-11-22 14:50:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:14,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:14,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:14,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105243817] [2021-11-22 14:50:14,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105243817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:14,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:14,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:50:14,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017518363] [2021-11-22 14:50:14,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:14,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:50:14,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:50:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:50:14,293 INFO L87 Difference]: Start difference. First operand 3764 states and 5443 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:14,741 INFO L93 Difference]: Finished difference Result 7486 states and 10829 transitions. [2021-11-22 14:50:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:50:14,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:14,745 INFO L225 Difference]: With dead ends: 7486 [2021-11-22 14:50:14,745 INFO L226 Difference]: Without dead ends: 3764 [2021-11-22 14:50:14,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:50:14,748 INFO L933 BasicCegarLoop]: 2883 mSDtfsCounter, 2722 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:14,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2722 Valid, 3020 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:50:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-11-22 14:50:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3764. [2021-11-22 14:50:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4363539728939676) internal successors, (5405), 3763 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5405 transitions. [2021-11-22 14:50:15,093 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5405 transitions. Word has length 176 [2021-11-22 14:50:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:15,093 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5405 transitions. [2021-11-22 14:50:15,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5405 transitions. [2021-11-22 14:50:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:15,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:15,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:15,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 14:50:15,095 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash 32496265, now seen corresponding path program 1 times [2021-11-22 14:50:15,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781498744] [2021-11-22 14:50:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:15,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:15,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:15,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781498744] [2021-11-22 14:50:15,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781498744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:15,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:15,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:15,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622333054] [2021-11-22 14:50:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:15,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:15,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:15,136 INFO L87 Difference]: Start difference. First operand 3764 states and 5405 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:15,945 INFO L93 Difference]: Finished difference Result 10881 states and 15631 transitions. [2021-11-22 14:50:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:15,953 INFO L225 Difference]: With dead ends: 10881 [2021-11-22 14:50:15,953 INFO L226 Difference]: Without dead ends: 7160 [2021-11-22 14:50:15,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:15,958 INFO L933 BasicCegarLoop]: 5336 mSDtfsCounter, 5613 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5613 SdHoareTripleChecker+Valid, 7949 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:15,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5613 Valid, 7949 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2021-11-22 14:50:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 3764. [2021-11-22 14:50:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.435556736646293) internal successors, (5402), 3763 states have internal predecessors, (5402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5402 transitions. [2021-11-22 14:50:16,373 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5402 transitions. Word has length 176 [2021-11-22 14:50:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:16,373 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5402 transitions. [2021-11-22 14:50:16,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5402 transitions. [2021-11-22 14:50:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:16,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:16,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:16,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 14:50:16,374 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1584944185, now seen corresponding path program 1 times [2021-11-22 14:50:16,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:16,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425438066] [2021-11-22 14:50:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:16,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:16,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425438066] [2021-11-22 14:50:16,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425438066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:16,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:16,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:16,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551124655] [2021-11-22 14:50:16,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:16,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:16,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:16,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:16,424 INFO L87 Difference]: Start difference. First operand 3764 states and 5402 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:17,319 INFO L93 Difference]: Finished difference Result 10877 states and 15616 transitions. [2021-11-22 14:50:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:17,327 INFO L225 Difference]: With dead ends: 10877 [2021-11-22 14:50:17,327 INFO L226 Difference]: Without dead ends: 7158 [2021-11-22 14:50:17,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:17,331 INFO L933 BasicCegarLoop]: 5329 mSDtfsCounter, 5607 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5607 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:17,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5607 Valid, 7937 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2021-11-22 14:50:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 3764. [2021-11-22 14:50:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4347595003986182) internal successors, (5399), 3763 states have internal predecessors, (5399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5399 transitions. [2021-11-22 14:50:17,825 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5399 transitions. Word has length 176 [2021-11-22 14:50:17,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:17,826 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5399 transitions. [2021-11-22 14:50:17,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5399 transitions. [2021-11-22 14:50:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:17,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:17,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:17,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 14:50:17,828 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1296124795, now seen corresponding path program 1 times [2021-11-22 14:50:17,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:17,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061830806] [2021-11-22 14:50:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:17,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:17,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:17,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061830806] [2021-11-22 14:50:17,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061830806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:17,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:17,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:17,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651775120] [2021-11-22 14:50:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:17,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:17,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:17,872 INFO L87 Difference]: Start difference. First operand 3764 states and 5399 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:18,675 INFO L93 Difference]: Finished difference Result 10875 states and 15605 transitions. [2021-11-22 14:50:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:18,683 INFO L225 Difference]: With dead ends: 10875 [2021-11-22 14:50:18,683 INFO L226 Difference]: Without dead ends: 7157 [2021-11-22 14:50:18,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:18,687 INFO L933 BasicCegarLoop]: 5324 mSDtfsCounter, 5602 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5602 SdHoareTripleChecker+Valid, 7929 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:18,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5602 Valid, 7929 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-22 14:50:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 3764. [2021-11-22 14:50:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4339622641509433) internal successors, (5396), 3763 states have internal predecessors, (5396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5396 transitions. [2021-11-22 14:50:19,111 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5396 transitions. Word has length 176 [2021-11-22 14:50:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:19,111 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5396 transitions. [2021-11-22 14:50:19,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5396 transitions. [2021-11-22 14:50:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:19,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:19,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:19,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 14:50:19,113 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1840997369, now seen corresponding path program 1 times [2021-11-22 14:50:19,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:19,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437742122] [2021-11-22 14:50:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:19,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:19,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:19,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437742122] [2021-11-22 14:50:19,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437742122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:19,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:19,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:19,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818586555] [2021-11-22 14:50:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:19,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:19,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:19,153 INFO L87 Difference]: Start difference. First operand 3764 states and 5396 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:19,974 INFO L93 Difference]: Finished difference Result 10873 states and 15594 transitions. [2021-11-22 14:50:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:19,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:19,982 INFO L225 Difference]: With dead ends: 10873 [2021-11-22 14:50:19,982 INFO L226 Difference]: Without dead ends: 7156 [2021-11-22 14:50:19,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:19,988 INFO L933 BasicCegarLoop]: 3110 mSDtfsCounter, 7835 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7835 SdHoareTripleChecker+Valid, 5712 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:19,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7835 Valid, 5712 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2021-11-22 14:50:20,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 3764. [2021-11-22 14:50:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.4331650279032686) internal successors, (5393), 3763 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5393 transitions. [2021-11-22 14:50:20,425 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5393 transitions. Word has length 176 [2021-11-22 14:50:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:20,425 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5393 transitions. [2021-11-22 14:50:20,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5393 transitions. [2021-11-22 14:50:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:20,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:20,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:20,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-22 14:50:20,427 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1165837243, now seen corresponding path program 1 times [2021-11-22 14:50:20,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:20,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827266821] [2021-11-22 14:50:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:20,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:20,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:20,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827266821] [2021-11-22 14:50:20,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827266821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:20,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:20,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:20,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661527290] [2021-11-22 14:50:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:20,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:20,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:20,467 INFO L87 Difference]: Start difference. First operand 3764 states and 5393 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:21,327 INFO L93 Difference]: Finished difference Result 10871 states and 15583 transitions. [2021-11-22 14:50:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:21,335 INFO L225 Difference]: With dead ends: 10871 [2021-11-22 14:50:21,335 INFO L226 Difference]: Without dead ends: 7155 [2021-11-22 14:50:21,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:21,339 INFO L933 BasicCegarLoop]: 5314 mSDtfsCounter, 5592 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5592 SdHoareTripleChecker+Valid, 7913 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:21,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5592 Valid, 7913 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states. [2021-11-22 14:50:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7155 to 3764. [2021-11-22 14:50:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.432367791655594) internal successors, (5390), 3763 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5390 transitions. [2021-11-22 14:50:21,784 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5390 transitions. Word has length 176 [2021-11-22 14:50:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:21,784 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5390 transitions. [2021-11-22 14:50:21,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5390 transitions. [2021-11-22 14:50:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 14:50:21,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:21,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:21,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-22 14:50:21,785 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:21,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2113889209, now seen corresponding path program 1 times [2021-11-22 14:50:21,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:21,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852794291] [2021-11-22 14:50:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:21,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:50:21,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:21,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852794291] [2021-11-22 14:50:21,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852794291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:21,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:21,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:21,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993315233] [2021-11-22 14:50:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:21,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:21,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:21,826 INFO L87 Difference]: Start difference. First operand 3764 states and 5390 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:23,230 INFO L93 Difference]: Finished difference Result 14335 states and 20485 transitions. [2021-11-22 14:50:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 14:50:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:23,242 INFO L225 Difference]: With dead ends: 14335 [2021-11-22 14:50:23,242 INFO L226 Difference]: Without dead ends: 10621 [2021-11-22 14:50:23,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:23,246 INFO L933 BasicCegarLoop]: 2896 mSDtfsCounter, 7802 mSDsluCounter, 6373 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7802 SdHoareTripleChecker+Valid, 9269 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:23,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7802 Valid, 9269 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:50:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2021-11-22 14:50:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 10235. [2021-11-22 14:50:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10235 states, 10234 states have (on average 1.420265780730897) internal successors, (14535), 10234 states have internal predecessors, (14535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 14535 transitions. [2021-11-22 14:50:24,399 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 14535 transitions. Word has length 176 [2021-11-22 14:50:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:24,399 INFO L470 AbstractCegarLoop]: Abstraction has 10235 states and 14535 transitions. [2021-11-22 14:50:24,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 14535 transitions. [2021-11-22 14:50:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 14:50:24,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:24,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:24,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 14:50:24,403 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash 318708324, now seen corresponding path program 1 times [2021-11-22 14:50:24,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264892178] [2021-11-22 14:50:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:24,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 14:50:24,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:24,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264892178] [2021-11-22 14:50:24,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264892178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:24,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:24,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:50:24,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630548312] [2021-11-22 14:50:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:24,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:50:24,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:50:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:24,454 INFO L87 Difference]: Start difference. First operand 10235 states and 14535 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:26,677 INFO L93 Difference]: Finished difference Result 27090 states and 38521 transitions. [2021-11-22 14:50:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:50:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 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 201 [2021-11-22 14:50:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:26,698 INFO L225 Difference]: With dead ends: 27090 [2021-11-22 14:50:26,698 INFO L226 Difference]: Without dead ends: 16915 [2021-11-22 14:50:26,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:50:26,706 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 10215 mSDsluCounter, 12121 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10215 SdHoareTripleChecker+Valid, 14957 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:26,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10215 Valid, 14957 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:50:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2021-11-22 14:50:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 10328. [2021-11-22 14:50:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10328 states, 10327 states have (on average 1.4109615570833738) internal successors, (14571), 10327 states have internal predecessors, (14571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10328 states to 10328 states and 14571 transitions. [2021-11-22 14:50:27,956 INFO L78 Accepts]: Start accepts. Automaton has 10328 states and 14571 transitions. Word has length 201 [2021-11-22 14:50:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:27,956 INFO L470 AbstractCegarLoop]: Abstraction has 10328 states and 14571 transitions. [2021-11-22 14:50:27,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 10328 states and 14571 transitions. [2021-11-22 14:50:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 14:50:27,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:27,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:27,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-22 14:50:27,959 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash -221721182, now seen corresponding path program 1 times [2021-11-22 14:50:27,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:27,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990871605] [2021-11-22 14:50:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:27,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 14:50:28,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990871605] [2021-11-22 14:50:28,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990871605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:28,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:28,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:50:28,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236149391] [2021-11-22 14:50:28,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:28,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:50:28,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:50:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:28,006 INFO L87 Difference]: Start difference. First operand 10328 states and 14571 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:29,628 INFO L93 Difference]: Finished difference Result 22209 states and 31287 transitions. [2021-11-22 14:50:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:50:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 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 201 [2021-11-22 14:50:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:29,640 INFO L225 Difference]: With dead ends: 22209 [2021-11-22 14:50:29,640 INFO L226 Difference]: Without dead ends: 11948 [2021-11-22 14:50:29,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:50:29,646 INFO L933 BasicCegarLoop]: 3045 mSDtfsCounter, 7975 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7975 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:29,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7975 Valid, 6088 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:50:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11948 states. [2021-11-22 14:50:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11948 to 10334. [2021-11-22 14:50:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10334 states, 10333 states have (on average 1.4024000774218524) internal successors, (14491), 10333 states have internal predecessors, (14491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10334 states to 10334 states and 14491 transitions. [2021-11-22 14:50:31,083 INFO L78 Accepts]: Start accepts. Automaton has 10334 states and 14491 transitions. Word has length 201 [2021-11-22 14:50:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:31,083 INFO L470 AbstractCegarLoop]: Abstraction has 10334 states and 14491 transitions. [2021-11-22 14:50:31,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 10334 states and 14491 transitions. [2021-11-22 14:50:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 14:50:31,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:31,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:31,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-22 14:50:31,087 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 196167520, now seen corresponding path program 1 times [2021-11-22 14:50:31,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:31,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773812907] [2021-11-22 14:50:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:31,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 14:50:31,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:31,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773812907] [2021-11-22 14:50:31,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773812907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:31,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:31,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:50:31,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946537175] [2021-11-22 14:50:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:31,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:50:31,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:50:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:50:31,134 INFO L87 Difference]: Start difference. First operand 10334 states and 14491 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:34,820 INFO L93 Difference]: Finished difference Result 39934 states and 55922 transitions. [2021-11-22 14:50:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:50:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 201 [2021-11-22 14:50:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:34,853 INFO L225 Difference]: With dead ends: 39934 [2021-11-22 14:50:34,853 INFO L226 Difference]: Without dead ends: 29669 [2021-11-22 14:50:34,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:34,862 INFO L933 BasicCegarLoop]: 2984 mSDtfsCounter, 7720 mSDsluCounter, 6981 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7720 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:34,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7720 Valid, 9965 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:50:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29669 states. [2021-11-22 14:50:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29669 to 28767. [2021-11-22 14:50:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28767 states, 28766 states have (on average 1.3925467565876382) internal successors, (40058), 28766 states have internal predecessors, (40058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28767 states to 28767 states and 40058 transitions. [2021-11-22 14:50:38,694 INFO L78 Accepts]: Start accepts. Automaton has 28767 states and 40058 transitions. Word has length 201 [2021-11-22 14:50:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:38,695 INFO L470 AbstractCegarLoop]: Abstraction has 28767 states and 40058 transitions. [2021-11-22 14:50:38,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28767 states and 40058 transitions. [2021-11-22 14:50:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-22 14:50:38,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:38,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:38,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-22 14:50:38,700 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1640241394, now seen corresponding path program 1 times [2021-11-22 14:50:38,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:38,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122218918] [2021-11-22 14:50:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:38,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 14:50:38,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:38,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122218918] [2021-11-22 14:50:38,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122218918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:38,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:38,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:50:38,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839280411] [2021-11-22 14:50:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:38,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:50:38,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:50:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:38,759 INFO L87 Difference]: Start difference. First operand 28767 states and 40058 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:50:45,129 INFO L93 Difference]: Finished difference Result 75153 states and 105061 transitions. [2021-11-22 14:50:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:50:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 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 206 [2021-11-22 14:50:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:50:45,178 INFO L225 Difference]: With dead ends: 75153 [2021-11-22 14:50:45,178 INFO L226 Difference]: Without dead ends: 46459 [2021-11-22 14:50:45,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:50:45,195 INFO L933 BasicCegarLoop]: 3024 mSDtfsCounter, 9416 mSDsluCounter, 11798 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9416 SdHoareTripleChecker+Valid, 14822 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:50:45,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9416 Valid, 14822 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:50:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46459 states. [2021-11-22 14:50:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46459 to 29028. [2021-11-22 14:50:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29028 states, 29027 states have (on average 1.3835394632583458) internal successors, (40160), 29027 states have internal predecessors, (40160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29028 states to 29028 states and 40160 transitions. [2021-11-22 14:50:49,981 INFO L78 Accepts]: Start accepts. Automaton has 29028 states and 40160 transitions. Word has length 206 [2021-11-22 14:50:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:50:49,981 INFO L470 AbstractCegarLoop]: Abstraction has 29028 states and 40160 transitions. [2021-11-22 14:50:49,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:50:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 29028 states and 40160 transitions. [2021-11-22 14:50:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-22 14:50:49,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:50:49,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:50:49,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-22 14:50:49,988 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:50:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:50:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1255772300, now seen corresponding path program 1 times [2021-11-22 14:50:49,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:50:49,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587136207] [2021-11-22 14:50:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:50:49,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:50:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:50:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 14:50:50,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:50:50,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587136207] [2021-11-22 14:50:50,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587136207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:50:50,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:50:50,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:50:50,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572725709] [2021-11-22 14:50:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:50:50,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:50:50,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:50:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:50:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:50:50,149 INFO L87 Difference]: Start difference. First operand 29028 states and 40160 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:51:01,443 INFO L93 Difference]: Finished difference Result 106709 states and 148697 transitions. [2021-11-22 14:51:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:51:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 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 206 [2021-11-22 14:51:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:51:01,542 INFO L225 Difference]: With dead ends: 106709 [2021-11-22 14:51:01,542 INFO L226 Difference]: Without dead ends: 77761 [2021-11-22 14:51:01,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:51:01,572 INFO L933 BasicCegarLoop]: 4113 mSDtfsCounter, 8665 mSDsluCounter, 11642 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8665 SdHoareTripleChecker+Valid, 15755 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:51:01,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8665 Valid, 15755 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:51:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77761 states.