./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aec1fafbe63132c51323898caadb7f7b777fc751b19e58e74eab1930ebd68833 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:09:43,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:09:43,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:09:43,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:09:43,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:09:43,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:09:43,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:09:43,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:09:43,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:09:43,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:09:43,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:09:43,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:09:43,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:09:43,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:09:43,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:09:43,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:09:43,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:09:43,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:09:43,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:09:43,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:09:43,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:09:43,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:09:43,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:09:43,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:09:43,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:09:43,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:09:43,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:09:43,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:09:43,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:09:43,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:09:43,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:09:43,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:09:43,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:09:43,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:09:43,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:09:43,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:09:43,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:09:43,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:09:43,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:09:43,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:09:43,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:09:43,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:09:43,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:09:43,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:09:43,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:09:43,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:09:43,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:09:43,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:09:43,711 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:09:43,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:09:43,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:09:43,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:09:43,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:09:43,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:09:43,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:09:43,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:09:43,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:09:43,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:09:43,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:09:43,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:09:43,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:09:43,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:09:43,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:09:43,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:09:43,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:09:43,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:09:43,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:09:43,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:09:43,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:09:43,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:09:43,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:09:43,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:09:43,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:09:43,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:09:43,722 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_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aec1fafbe63132c51323898caadb7f7b777fc751b19e58e74eab1930ebd68833 [2021-11-23 13:09:44,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:09:44,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:09:44,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:09:44,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:09:44,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:09:44,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/eca-rers2018/Problem10.c [2021-11-23 13:09:44,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/data/b144844e3/aa53a36ffb8442aaa51aa4a204bb14eb/FLAGa623d0d32 [2021-11-23 13:09:44,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:09:44,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/sv-benchmarks/c/eca-rers2018/Problem10.c [2021-11-23 13:09:44,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/data/b144844e3/aa53a36ffb8442aaa51aa4a204bb14eb/FLAGa623d0d32 [2021-11-23 13:09:45,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/data/b144844e3/aa53a36ffb8442aaa51aa4a204bb14eb [2021-11-23 13:09:45,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:09:45,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:09:45,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:09:45,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:09:45,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:09:45,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:09:45" (1/1) ... [2021-11-23 13:09:45,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662668d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:45, skipping insertion in model container [2021-11-23 13:09:45,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:09:45" (1/1) ... [2021-11-23 13:09:45,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:09:45,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:09:45,417 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_56a5d217-fe11-4d87-9035-dbd49030d8b7/sv-benchmarks/c/eca-rers2018/Problem10.c[778,791] [2021-11-23 13:09:45,423 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_56a5d217-fe11-4d87-9035-dbd49030d8b7/sv-benchmarks/c/eca-rers2018/Problem10.c[817,830] [2021-11-23 13:09:45,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:09:45,870 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:09:45,884 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_56a5d217-fe11-4d87-9035-dbd49030d8b7/sv-benchmarks/c/eca-rers2018/Problem10.c[778,791] [2021-11-23 13:09:45,889 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_56a5d217-fe11-4d87-9035-dbd49030d8b7/sv-benchmarks/c/eca-rers2018/Problem10.c[817,830] [2021-11-23 13:09:46,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:09:46,157 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:09:46,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46 WrapperNode [2021-11-23 13:09:46,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:09:46,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:09:46,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:09:46,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:09:46,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,319 INFO L137 Inliner]: procedures = 274, calls = 248, calls flagged for inlining = 244, calls inlined = 244, statements flattened = 965 [2021-11-23 13:09:46,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:09:46,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:09:46,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:09:46,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:09:46,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:09:46,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:09:46,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:09:46,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:09:46,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (1/1) ... [2021-11-23 13:09:46,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:09:46,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:46,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:09:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a5d217-fe11-4d87-9035-dbd49030d8b7/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:09:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:09:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:09:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:09:46,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:09:46,760 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:09:46,763 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:09:48,238 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:09:48,267 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:09:48,267 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:09:48,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:48 BoogieIcfgContainer [2021-11-23 13:09:48,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:09:48,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:09:48,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:09:48,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:09:48,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:09:45" (1/3) ... [2021-11-23 13:09:48,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d405670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:09:48, skipping insertion in model container [2021-11-23 13:09:48,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:46" (2/3) ... [2021-11-23 13:09:48,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d405670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:09:48, skipping insertion in model container [2021-11-23 13:09:48,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:48" (3/3) ... [2021-11-23 13:09:48,295 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10.c [2021-11-23 13:09:48,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:09:48,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-23 13:09:48,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:09:48,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:09:48,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-23 13:09:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 660 states, 559 states have (on average 1.5599284436493739) internal successors, (872), 659 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:09:48,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:48,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:48,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:48,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:48,475 INFO L85 PathProgramCache]: Analyzing trace with hash -315296036, now seen corresponding path program 1 times [2021-11-23 13:09:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:48,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185832140] [2021-11-23 13:09:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:48,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:48,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:48,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185832140] [2021-11-23 13:09:48,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185832140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:48,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:48,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:48,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847800406] [2021-11-23 13:09:48,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:48,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:09:48,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:09:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:48,836 INFO L87 Difference]: Start difference. First operand has 660 states, 559 states have (on average 1.5599284436493739) internal successors, (872), 659 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:50,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:50,533 INFO L93 Difference]: Finished difference Result 1449 states and 2155 transitions. [2021-11-23 13:09:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:09:50,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-23 13:09:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:50,565 INFO L225 Difference]: With dead ends: 1449 [2021-11-23 13:09:50,569 INFO L226 Difference]: Without dead ends: 782 [2021-11-23 13:09:50,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:50,587 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 371 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:50,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 784 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 13:09:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-23 13:09:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 653. [2021-11-23 13:09:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 553 states have (on average 1.484629294755877) internal successors, (821), 652 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 821 transitions. [2021-11-23 13:09:50,686 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 821 transitions. Word has length 12 [2021-11-23 13:09:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:50,687 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 821 transitions. [2021-11-23 13:09:50,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 821 transitions. [2021-11-23 13:09:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:09:50,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:50,691 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] [2021-11-23 13:09:50,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:09:50,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash 133466808, now seen corresponding path program 1 times [2021-11-23 13:09:50,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844705611] [2021-11-23 13:09:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:50,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:50,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:50,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844705611] [2021-11-23 13:09:50,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844705611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:50,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:50,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:50,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936304399] [2021-11-23 13:09:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:50,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:09:50,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:50,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:09:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:50,811 INFO L87 Difference]: Start difference. First operand 653 states and 821 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:51,810 INFO L93 Difference]: Finished difference Result 1972 states and 2576 transitions. [2021-11-23 13:09:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:09:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 13:09:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:51,828 INFO L225 Difference]: With dead ends: 1972 [2021-11-23 13:09:51,829 INFO L226 Difference]: Without dead ends: 1321 [2021-11-23 13:09:51,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:51,833 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 620 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:51,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1227 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:09:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-11-23 13:09:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 984. [2021-11-23 13:09:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 884 states have (on average 1.490950226244344) internal successors, (1318), 983 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1318 transitions. [2021-11-23 13:09:51,909 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1318 transitions. Word has length 20 [2021-11-23 13:09:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:51,910 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1318 transitions. [2021-11-23 13:09:51,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1318 transitions. [2021-11-23 13:09:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:09:51,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:51,919 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] [2021-11-23 13:09:51,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:09:51,920 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash -796221635, now seen corresponding path program 1 times [2021-11-23 13:09:51,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:51,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202758239] [2021-11-23 13:09:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:51,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:52,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202758239] [2021-11-23 13:09:52,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202758239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:52,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:52,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:52,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357714327] [2021-11-23 13:09:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:52,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:52,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:52,058 INFO L87 Difference]: Start difference. First operand 984 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:52,108 INFO L93 Difference]: Finished difference Result 2937 states and 3931 transitions. [2021-11-23 13:09:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:52,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-23 13:09:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:52,123 INFO L225 Difference]: With dead ends: 2937 [2021-11-23 13:09:52,124 INFO L226 Difference]: Without dead ends: 1955 [2021-11-23 13:09:52,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:52,128 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 561 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:52,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 1248 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:09:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2021-11-23 13:09:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 984. [2021-11-23 13:09:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 884 states have (on average 1.489819004524887) internal successors, (1317), 983 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1317 transitions. [2021-11-23 13:09:52,194 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1317 transitions. Word has length 23 [2021-11-23 13:09:52,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:52,195 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1317 transitions. [2021-11-23 13:09:52,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1317 transitions. [2021-11-23 13:09:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:09:52,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:52,203 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] [2021-11-23 13:09:52,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:09:52,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -95157057, now seen corresponding path program 1 times [2021-11-23 13:09:52,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:52,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920526428] [2021-11-23 13:09:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:52,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:52,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920526428] [2021-11-23 13:09:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920526428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:52,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:52,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776206875] [2021-11-23 13:09:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:52,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:52,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:52,310 INFO L87 Difference]: Start difference. First operand 984 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:52,564 INFO L93 Difference]: Finished difference Result 2469 states and 3259 transitions. [2021-11-23 13:09:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-23 13:09:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:52,577 INFO L225 Difference]: With dead ends: 2469 [2021-11-23 13:09:52,577 INFO L226 Difference]: Without dead ends: 1487 [2021-11-23 13:09:52,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:52,594 INFO L933 BasicCegarLoop]: 937 mSDtfsCounter, 531 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:52,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1376 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:09:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-23 13:09:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1327. [2021-11-23 13:09:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1227 states have (on average 1.5052974735126325) internal successors, (1847), 1326 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1847 transitions. [2021-11-23 13:09:52,655 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1847 transitions. Word has length 23 [2021-11-23 13:09:52,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:52,656 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1847 transitions. [2021-11-23 13:09:52,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1847 transitions. [2021-11-23 13:09:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:09:52,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:52,658 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] [2021-11-23 13:09:52,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:09:52,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash -538056197, now seen corresponding path program 1 times [2021-11-23 13:09:52,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:52,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263468018] [2021-11-23 13:09:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:52,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:52,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263468018] [2021-11-23 13:09:52,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263468018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:52,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:52,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:52,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705729864] [2021-11-23 13:09:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:52,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:52,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:52,758 INFO L87 Difference]: Start difference. First operand 1327 states and 1847 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:53,527 INFO L93 Difference]: Finished difference Result 3180 states and 4639 transitions. [2021-11-23 13:09:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:53,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-23 13:09:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:53,542 INFO L225 Difference]: With dead ends: 3180 [2021-11-23 13:09:53,543 INFO L226 Difference]: Without dead ends: 1855 [2021-11-23 13:09:53,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:53,547 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 259 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:53,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 750 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:09:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-23 13:09:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1855. [2021-11-23 13:09:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1755 states have (on average 1.4444444444444444) internal successors, (2535), 1854 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2535 transitions. [2021-11-23 13:09:53,613 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2535 transitions. Word has length 23 [2021-11-23 13:09:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:53,614 INFO L470 AbstractCegarLoop]: Abstraction has 1855 states and 2535 transitions. [2021-11-23 13:09:53,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2535 transitions. [2021-11-23 13:09:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:09:53,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:53,616 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] [2021-11-23 13:09:53,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:09:53,617 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:53,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:53,618 INFO L85 PathProgramCache]: Analyzing trace with hash 163008381, now seen corresponding path program 1 times [2021-11-23 13:09:53,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:53,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965669848] [2021-11-23 13:09:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:53,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:53,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:53,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965669848] [2021-11-23 13:09:53,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965669848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:53,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:53,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:09:53,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369894999] [2021-11-23 13:09:53,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:53,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:53,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:53,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:53,663 INFO L87 Difference]: Start difference. First operand 1855 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:53,798 INFO L93 Difference]: Finished difference Result 5454 states and 7486 transitions. [2021-11-23 13:09:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:53,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-23 13:09:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:53,825 INFO L225 Difference]: With dead ends: 5454 [2021-11-23 13:09:53,825 INFO L226 Difference]: Without dead ends: 3601 [2021-11-23 13:09:53,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:53,830 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 508 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:53,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 1070 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:09:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-23 13:09:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3433. [2021-11-23 13:09:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 3333 states have (on average 1.4458445844584458) internal successors, (4819), 3432 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 4819 transitions. [2021-11-23 13:09:53,940 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 4819 transitions. Word has length 23 [2021-11-23 13:09:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:53,941 INFO L470 AbstractCegarLoop]: Abstraction has 3433 states and 4819 transitions. [2021-11-23 13:09:53,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 4819 transitions. [2021-11-23 13:09:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:09:53,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:53,943 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] [2021-11-23 13:09:53,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:09:53,944 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 758301277, now seen corresponding path program 1 times [2021-11-23 13:09:53,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:53,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121629828] [2021-11-23 13:09:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:53,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:53,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:53,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121629828] [2021-11-23 13:09:53,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121629828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:53,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:53,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:09:53,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993844138] [2021-11-23 13:09:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:53,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:53,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:53,999 INFO L87 Difference]: Start difference. First operand 3433 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:54,126 INFO L93 Difference]: Finished difference Result 10163 states and 14279 transitions. [2021-11-23 13:09:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-23 13:09:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:54,173 INFO L225 Difference]: With dead ends: 10163 [2021-11-23 13:09:54,173 INFO L226 Difference]: Without dead ends: 6732 [2021-11-23 13:09:54,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:54,181 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 530 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:54,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1092 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:09:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6732 states. [2021-11-23 13:09:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6732 to 6540. [2021-11-23 13:09:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6540 states, 6440 states have (on average 1.4518633540372672) internal successors, (9350), 6539 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 9350 transitions. [2021-11-23 13:09:54,384 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 9350 transitions. Word has length 24 [2021-11-23 13:09:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:54,384 INFO L470 AbstractCegarLoop]: Abstraction has 6540 states and 9350 transitions. [2021-11-23 13:09:54,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 9350 transitions. [2021-11-23 13:09:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:09:54,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:54,386 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] [2021-11-23 13:09:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:09:54,387 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1417483963, now seen corresponding path program 1 times [2021-11-23 13:09:54,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:54,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105062252] [2021-11-23 13:09:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:54,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:54,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105062252] [2021-11-23 13:09:54,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105062252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:54,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:54,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:54,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457966383] [2021-11-23 13:09:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:54,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:54,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:54,428 INFO L87 Difference]: Start difference. First operand 6540 states and 9350 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:54,571 INFO L93 Difference]: Finished difference Result 12882 states and 18418 transitions. [2021-11-23 13:09:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:54,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-23 13:09:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:54,647 INFO L225 Difference]: With dead ends: 12882 [2021-11-23 13:09:54,647 INFO L226 Difference]: Without dead ends: 12876 [2021-11-23 13:09:54,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:54,652 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 545 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:54,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1551 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:09:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12876 states. [2021-11-23 13:09:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12876 to 12682. [2021-11-23 13:09:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12682 states, 12582 states have (on average 1.4501669051025274) internal successors, (18246), 12681 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12682 states to 12682 states and 18246 transitions. [2021-11-23 13:09:55,079 INFO L78 Accepts]: Start accepts. Automaton has 12682 states and 18246 transitions. Word has length 25 [2021-11-23 13:09:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:55,079 INFO L470 AbstractCegarLoop]: Abstraction has 12682 states and 18246 transitions. [2021-11-23 13:09:55,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12682 states and 18246 transitions. [2021-11-23 13:09:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:09:55,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:55,086 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] [2021-11-23 13:09:55,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:09:55,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2032511881, now seen corresponding path program 1 times [2021-11-23 13:09:55,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:55,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746095449] [2021-11-23 13:09:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:55,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:55,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746095449] [2021-11-23 13:09:55,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746095449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:55,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:55,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:09:55,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865340491] [2021-11-23 13:09:55,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:55,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:55,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:55,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:55,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:55,169 INFO L87 Difference]: Start difference. First operand 12682 states and 18246 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:55,604 INFO L93 Difference]: Finished difference Result 36188 states and 51849 transitions. [2021-11-23 13:09:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:55,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-23 13:09:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:55,668 INFO L225 Difference]: With dead ends: 36188 [2021-11-23 13:09:55,669 INFO L226 Difference]: Without dead ends: 23508 [2021-11-23 13:09:55,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:55,689 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 450 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:55,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 999 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:09:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23508 states. [2021-11-23 13:09:56,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23508 to 23358. [2021-11-23 13:09:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23358 states, 23258 states have (on average 1.41172929744604) internal successors, (32834), 23357 states have internal predecessors, (32834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23358 states to 23358 states and 32834 transitions. [2021-11-23 13:09:56,788 INFO L78 Accepts]: Start accepts. Automaton has 23358 states and 32834 transitions. Word has length 25 [2021-11-23 13:09:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:56,788 INFO L470 AbstractCegarLoop]: Abstraction has 23358 states and 32834 transitions. [2021-11-23 13:09:56,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:56,789 INFO L276 IsEmpty]: Start isEmpty. Operand 23358 states and 32834 transitions. [2021-11-23 13:09:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:09:56,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:56,790 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] [2021-11-23 13:09:56,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:09:56,790 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -697174447, now seen corresponding path program 1 times [2021-11-23 13:09:56,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:56,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207627706] [2021-11-23 13:09:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:56,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:56,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207627706] [2021-11-23 13:09:56,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207627706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:56,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:56,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:56,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249417934] [2021-11-23 13:09:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:56,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:56,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:56,836 INFO L87 Difference]: Start difference. First operand 23358 states and 32834 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:57,463 INFO L93 Difference]: Finished difference Result 53582 states and 75147 transitions. [2021-11-23 13:09:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-23 13:09:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:57,564 INFO L225 Difference]: With dead ends: 53582 [2021-11-23 13:09:57,564 INFO L226 Difference]: Without dead ends: 30226 [2021-11-23 13:09:57,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:57,612 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 451 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:57,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1440 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:09:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30226 states. [2021-11-23 13:09:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30226 to 30076. [2021-11-23 13:09:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30076 states, 29976 states have (on average 1.377902321857486) internal successors, (41304), 30075 states have internal predecessors, (41304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30076 states to 30076 states and 41304 transitions. [2021-11-23 13:09:58,697 INFO L78 Accepts]: Start accepts. Automaton has 30076 states and 41304 transitions. Word has length 27 [2021-11-23 13:09:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:58,698 INFO L470 AbstractCegarLoop]: Abstraction has 30076 states and 41304 transitions. [2021-11-23 13:09:58,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30076 states and 41304 transitions. [2021-11-23 13:09:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:09:58,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:58,700 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] [2021-11-23 13:09:58,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:09:58,700 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:09:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 121232757, now seen corresponding path program 1 times [2021-11-23 13:09:58,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:58,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574211367] [2021-11-23 13:09:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:58,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:58,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:58,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574211367] [2021-11-23 13:09:58,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574211367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:58,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:58,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:09:58,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502951334] [2021-11-23 13:09:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:58,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:09:58,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:09:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:09:58,742 INFO L87 Difference]: Start difference. First operand 30076 states and 41304 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:59,985 INFO L93 Difference]: Finished difference Result 69470 states and 98330 transitions. [2021-11-23 13:09:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:09:59,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-23 13:09:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:00,062 INFO L225 Difference]: With dead ends: 69470 [2021-11-23 13:10:00,062 INFO L226 Difference]: Without dead ends: 39396 [2021-11-23 13:10:00,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:00,102 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 337 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:00,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 721 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:10:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39396 states. [2021-11-23 13:10:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39396 to 39396. [2021-11-23 13:10:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39396 states, 39296 states have (on average 1.3578481270358307) internal successors, (53358), 39395 states have internal predecessors, (53358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39396 states to 39396 states and 53358 transitions. [2021-11-23 13:10:01,213 INFO L78 Accepts]: Start accepts. Automaton has 39396 states and 53358 transitions. Word has length 28 [2021-11-23 13:10:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:01,214 INFO L470 AbstractCegarLoop]: Abstraction has 39396 states and 53358 transitions. [2021-11-23 13:10:01,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 39396 states and 53358 transitions. [2021-11-23 13:10:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 13:10:01,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:01,219 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] [2021-11-23 13:10:01,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:10:01,220 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 61094029, now seen corresponding path program 1 times [2021-11-23 13:10:01,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:01,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621269478] [2021-11-23 13:10:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:01,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:01,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:01,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621269478] [2021-11-23 13:10:01,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621269478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:01,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:01,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:01,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361563757] [2021-11-23 13:10:01,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:01,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:01,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:01,295 INFO L87 Difference]: Start difference. First operand 39396 states and 53358 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:02,213 INFO L93 Difference]: Finished difference Result 114678 states and 154931 transitions. [2021-11-23 13:10:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:02,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-23 13:10:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:02,409 INFO L225 Difference]: With dead ends: 114678 [2021-11-23 13:10:02,410 INFO L226 Difference]: Without dead ends: 75284 [2021-11-23 13:10:02,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:02,483 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 506 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:02,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1315 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:10:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75284 states. [2021-11-23 13:10:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75284 to 75110. [2021-11-23 13:10:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75110 states, 75010 states have (on average 1.337261698440208) internal successors, (100308), 75109 states have internal predecessors, (100308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75110 states to 75110 states and 100308 transitions. [2021-11-23 13:10:03,996 INFO L78 Accepts]: Start accepts. Automaton has 75110 states and 100308 transitions. Word has length 32 [2021-11-23 13:10:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:03,996 INFO L470 AbstractCegarLoop]: Abstraction has 75110 states and 100308 transitions. [2021-11-23 13:10:03,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 75110 states and 100308 transitions. [2021-11-23 13:10:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 13:10:03,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:03,998 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] [2021-11-23 13:10:03,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:10:04,001 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash 857420601, now seen corresponding path program 1 times [2021-11-23 13:10:04,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:04,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520857832] [2021-11-23 13:10:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:04,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:04,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:04,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520857832] [2021-11-23 13:10:04,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520857832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:04,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:04,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:10:04,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819284720] [2021-11-23 13:10:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:04,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:04,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:04,054 INFO L87 Difference]: Start difference. First operand 75110 states and 100308 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:04,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:04,805 INFO L93 Difference]: Finished difference Result 75110 states and 100308 transitions. [2021-11-23 13:10:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:04,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-23 13:10:04,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:04,926 INFO L225 Difference]: With dead ends: 75110 [2021-11-23 13:10:04,927 INFO L226 Difference]: Without dead ends: 75106 [2021-11-23 13:10:04,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:04,942 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 530 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:04,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 551 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:10:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75106 states. [2021-11-23 13:10:06,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75106 to 75106. [2021-11-23 13:10:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75106 states, 75008 states have (on average 1.3330044795221843) internal successors, (99986), 75105 states have internal predecessors, (99986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75106 states to 75106 states and 99986 transitions. [2021-11-23 13:10:06,318 INFO L78 Accepts]: Start accepts. Automaton has 75106 states and 99986 transitions. Word has length 33 [2021-11-23 13:10:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 75106 states and 99986 transitions. [2021-11-23 13:10:06,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 75106 states and 99986 transitions. [2021-11-23 13:10:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 13:10:06,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:06,324 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] [2021-11-23 13:10:06,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:10:06,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1409896657, now seen corresponding path program 1 times [2021-11-23 13:10:06,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791177940] [2021-11-23 13:10:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:06,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:06,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:06,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791177940] [2021-11-23 13:10:06,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791177940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:06,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:06,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:06,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171629148] [2021-11-23 13:10:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:06,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:06,367 INFO L87 Difference]: Start difference. First operand 75106 states and 99986 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:08,227 INFO L93 Difference]: Finished difference Result 196690 states and 260158 transitions. [2021-11-23 13:10:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:08,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-23 13:10:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:08,385 INFO L225 Difference]: With dead ends: 196690 [2021-11-23 13:10:08,385 INFO L226 Difference]: Without dead ends: 121586 [2021-11-23 13:10:08,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:08,439 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 302 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:08,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 795 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:10:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121586 states. [2021-11-23 13:10:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121586 to 75726. [2021-11-23 13:10:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75726 states, 75628 states have (on average 1.282170624636378) internal successors, (96968), 75725 states have internal predecessors, (96968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75726 states to 75726 states and 96968 transitions. [2021-11-23 13:10:10,582 INFO L78 Accepts]: Start accepts. Automaton has 75726 states and 96968 transitions. Word has length 34 [2021-11-23 13:10:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:10,583 INFO L470 AbstractCegarLoop]: Abstraction has 75726 states and 96968 transitions. [2021-11-23 13:10:10,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 75726 states and 96968 transitions. [2021-11-23 13:10:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 13:10:10,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:10,584 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] [2021-11-23 13:10:10,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:10:10,584 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -412200527, now seen corresponding path program 1 times [2021-11-23 13:10:10,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:10,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508217025] [2021-11-23 13:10:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:10,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:10,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:10,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508217025] [2021-11-23 13:10:10,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508217025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:10,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:10,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:10,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857298215] [2021-11-23 13:10:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:10,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:10,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:10,740 INFO L87 Difference]: Start difference. First operand 75726 states and 96968 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:11,406 INFO L93 Difference]: Finished difference Result 175828 states and 225072 transitions. [2021-11-23 13:10:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-23 13:10:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:11,547 INFO L225 Difference]: With dead ends: 175828 [2021-11-23 13:10:11,548 INFO L226 Difference]: Without dead ends: 100104 [2021-11-23 13:10:11,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:11,594 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 480 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:11,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 963 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:10:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100104 states. [2021-11-23 13:10:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100104 to 99944. [2021-11-23 13:10:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99944 states, 99846 states have (on average 1.2670111972437554) internal successors, (126506), 99943 states have internal predecessors, (126506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99944 states to 99944 states and 126506 transitions. [2021-11-23 13:10:13,509 INFO L78 Accepts]: Start accepts. Automaton has 99944 states and 126506 transitions. Word has length 38 [2021-11-23 13:10:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:13,510 INFO L470 AbstractCegarLoop]: Abstraction has 99944 states and 126506 transitions. [2021-11-23 13:10:13,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 99944 states and 126506 transitions. [2021-11-23 13:10:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 13:10:13,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:13,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:13,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:10:13,512 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:13,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:13,513 INFO L85 PathProgramCache]: Analyzing trace with hash 555278933, now seen corresponding path program 1 times [2021-11-23 13:10:13,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:13,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435088533] [2021-11-23 13:10:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:13,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:13,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:13,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435088533] [2021-11-23 13:10:13,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435088533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:13,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:13,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:13,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776338079] [2021-11-23 13:10:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:13,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:13,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:13,560 INFO L87 Difference]: Start difference. First operand 99944 states and 126506 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:14,729 INFO L93 Difference]: Finished difference Result 179108 states and 225992 transitions. [2021-11-23 13:10:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:14,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 13:10:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:14,948 INFO L225 Difference]: With dead ends: 179108 [2021-11-23 13:10:14,948 INFO L226 Difference]: Without dead ends: 179106 [2021-11-23 13:10:14,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:14,987 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 525 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:14,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1570 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:10:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179106 states. [2021-11-23 13:10:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179106 to 178912. [2021-11-23 13:10:17,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178912 states, 178814 states have (on average 1.2619481696064068) internal successors, (225654), 178911 states have internal predecessors, (225654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178912 states to 178912 states and 225654 transitions. [2021-11-23 13:10:17,960 INFO L78 Accepts]: Start accepts. Automaton has 178912 states and 225654 transitions. Word has length 44 [2021-11-23 13:10:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:17,960 INFO L470 AbstractCegarLoop]: Abstraction has 178912 states and 225654 transitions. [2021-11-23 13:10:17,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 178912 states and 225654 transitions. [2021-11-23 13:10:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 13:10:17,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:17,961 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] [2021-11-23 13:10:17,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:10:17,961 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1724668112, now seen corresponding path program 1 times [2021-11-23 13:10:17,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:17,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550557172] [2021-11-23 13:10:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:17,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:17,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:17,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550557172] [2021-11-23 13:10:18,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550557172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:18,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:18,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:18,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226122821] [2021-11-23 13:10:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:18,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:10:18,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:10:18,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:10:18,003 INFO L87 Difference]: Start difference. First operand 178912 states and 225654 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:21,083 INFO L93 Difference]: Finished difference Result 467332 states and 589433 transitions. [2021-11-23 13:10:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:10:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-23 13:10:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:22,373 INFO L225 Difference]: With dead ends: 467332 [2021-11-23 13:10:22,373 INFO L226 Difference]: Without dead ends: 288422 [2021-11-23 13:10:22,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:10:22,520 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 813 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:22,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 814 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:10:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288422 states. [2021-11-23 13:10:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288422 to 178902. [2021-11-23 13:10:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178902 states, 178809 states have (on average 1.2522244406042202) internal successors, (223909), 178901 states have internal predecessors, (223909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178902 states to 178902 states and 223909 transitions. [2021-11-23 13:10:26,398 INFO L78 Accepts]: Start accepts. Automaton has 178902 states and 223909 transitions. Word has length 47 [2021-11-23 13:10:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:26,398 INFO L470 AbstractCegarLoop]: Abstraction has 178902 states and 223909 transitions. [2021-11-23 13:10:26,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 178902 states and 223909 transitions. [2021-11-23 13:10:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 13:10:26,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:26,399 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] [2021-11-23 13:10:26,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:10:26,400 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash -745739191, now seen corresponding path program 1 times [2021-11-23 13:10:26,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:26,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348261949] [2021-11-23 13:10:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:26,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:26,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348261949] [2021-11-23 13:10:26,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348261949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:26,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:26,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:26,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710669438] [2021-11-23 13:10:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:26,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:26,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:26,444 INFO L87 Difference]: Start difference. First operand 178902 states and 223909 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:28,877 INFO L93 Difference]: Finished difference Result 354346 states and 443628 transitions. [2021-11-23 13:10:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 13:10:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:29,159 INFO L225 Difference]: With dead ends: 354346 [2021-11-23 13:10:29,160 INFO L226 Difference]: Without dead ends: 175446 [2021-11-23 13:10:29,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:29,260 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 383 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:29,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 360 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:10:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175446 states. [2021-11-23 13:10:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175446 to 97112. [2021-11-23 13:10:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97112 states, 97019 states have (on average 1.1899421762747504) internal successors, (115447), 97111 states have internal predecessors, (115447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97112 states to 97112 states and 115447 transitions. [2021-11-23 13:10:31,557 INFO L78 Accepts]: Start accepts. Automaton has 97112 states and 115447 transitions. Word has length 57 [2021-11-23 13:10:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:31,558 INFO L470 AbstractCegarLoop]: Abstraction has 97112 states and 115447 transitions. [2021-11-23 13:10:31,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 97112 states and 115447 transitions. [2021-11-23 13:10:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 13:10:31,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:31,559 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] [2021-11-23 13:10:31,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:10:31,560 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash 316528237, now seen corresponding path program 1 times [2021-11-23 13:10:31,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:31,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087039972] [2021-11-23 13:10:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:31,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:31,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087039972] [2021-11-23 13:10:31,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087039972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:31,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:31,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:10:31,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561271504] [2021-11-23 13:10:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:31,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:10:31,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:10:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:31,641 INFO L87 Difference]: Start difference. First operand 97112 states and 115447 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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) [2021-11-23 13:10:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:32,119 INFO L93 Difference]: Finished difference Result 138983 states and 164341 transitions. [2021-11-23 13:10:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:10:32,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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 112 [2021-11-23 13:10:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:32,290 INFO L225 Difference]: With dead ends: 138983 [2021-11-23 13:10:32,290 INFO L226 Difference]: Without dead ends: 138977 [2021-11-23 13:10:33,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:10:33,088 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 443 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:33,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1260 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:10:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138977 states. [2021-11-23 13:10:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138977 to 138797. [2021-11-23 13:10:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138797 states, 138704 states have (on average 1.1793171069327488) internal successors, (163576), 138796 states have internal predecessors, (163576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138797 states to 138797 states and 163576 transitions. [2021-11-23 13:10:35,241 INFO L78 Accepts]: Start accepts. Automaton has 138797 states and 163576 transitions. Word has length 112 [2021-11-23 13:10:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:35,241 INFO L470 AbstractCegarLoop]: Abstraction has 138797 states and 163576 transitions. [2021-11-23 13:10:35,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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) [2021-11-23 13:10:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 138797 states and 163576 transitions. [2021-11-23 13:10:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 13:10:35,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:35,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:35,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:10:35,245 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-23 13:10:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:35,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1608408033, now seen corresponding path program 1 times [2021-11-23 13:10:35,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:35,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253588914] [2021-11-23 13:10:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:35,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:35,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:35,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253588914] [2021-11-23 13:10:35,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253588914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:35,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:35,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:10:35,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616475178] [2021-11-23 13:10:35,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:10:35,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:10:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:10:35,332 INFO L87 Difference]: Start difference. First operand 138797 states and 163576 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:38,245 INFO L93 Difference]: Finished difference Result 382911 states and 449970 transitions. [2021-11-23 13:10:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:10:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-11-23 13:10:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:38,679 INFO L225 Difference]: With dead ends: 382911 [2021-11-23 13:10:38,679 INFO L226 Difference]: Without dead ends: 285807 [2021-11-23 13:10:38,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:10:38,758 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 566 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:38,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1816 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:10:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285807 states.