./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX --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 e0e95c13964d33a58c84e6632b6635f09155542b4e87cc9520cc45bb7c6f5f1d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:35:41,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:35:41,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:35:41,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:35:41,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:35:41,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:35:41,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:35:41,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:35:41,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:35:41,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:35:41,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:35:41,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:35:41,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:35:41,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:35:41,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:35:41,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:35:41,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:35:41,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:35:41,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:35:41,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:35:41,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:35:41,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:35:41,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:35:41,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:35:41,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:35:41,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:35:41,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:35:41,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:35:41,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:35:41,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:35:41,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:35:41,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:35:41,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:35:41,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:35:41,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:35:41,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:35:41,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:35:41,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:35:41,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:35:41,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:35:41,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:35:41,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:35:41,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:35:41,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:35:41,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:35:41,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:35:41,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:35:41,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:35:41,524 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:35:41,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:35:41,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:35:41,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:35:41,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:35:41,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:35:41,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:35:41,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:35:41,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:35:41,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:35:41,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:35:41,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:35:41,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:35:41,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:35:41,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:35:41,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:35:41,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:35:41,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:35:41,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:35:41,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:35:41,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:35:41,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:35:41,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:35:41,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:35:41,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:35:41,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:35:41,535 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_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e95c13964d33a58c84e6632b6635f09155542b4e87cc9520cc45bb7c6f5f1d [2021-11-09 08:35:41,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:35:41,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:35:41,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:35:41,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:35:41,888 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:35:41,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c [2021-11-09 08:35:41,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/data/d6e735d75/8386d5caca4141f682518b670c903bd5/FLAG0bbfd1a12 [2021-11-09 08:35:42,788 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:35:42,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c [2021-11-09 08:35:42,826 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/data/d6e735d75/8386d5caca4141f682518b670c903bd5/FLAG0bbfd1a12 [2021-11-09 08:35:42,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/data/d6e735d75/8386d5caca4141f682518b670c903bd5 [2021-11-09 08:35:42,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:35:42,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:35:42,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:35:42,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:35:42,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:35:42,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:35:42" (1/1) ... [2021-11-09 08:35:42,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80dd174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:42, skipping insertion in model container [2021-11-09 08:35:42,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:35:42" (1/1) ... [2021-11-09 08:35:42,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:35:43,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:35:43,656 WARN L228 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_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c[17698,17711] [2021-11-09 08:35:43,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:35:43,930 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:35:43,999 WARN L228 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_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c[17698,17711] [2021-11-09 08:35:44,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:35:44,157 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:35:44,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44 WrapperNode [2021-11-09 08:35:44,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:35:44,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:35:44,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:35:44,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:35:44,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:35:44,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:35:44,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:35:44,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:35:44,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:35:44,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:35:44,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:35:44,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:35:44,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (1/1) ... [2021-11-09 08:35:44,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:35:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:35:44,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:35:44,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:35:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 08:35:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:35:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:35:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:35:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:35:47,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:35:47,715 INFO L299 CfgBuilder]: Removed 529 assume(true) statements. [2021-11-09 08:35:47,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:35:47 BoogieIcfgContainer [2021-11-09 08:35:47,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:35:47,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:35:47,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:35:47,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:35:47,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:35:42" (1/3) ... [2021-11-09 08:35:47,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d972951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:35:47, skipping insertion in model container [2021-11-09 08:35:47,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:35:44" (2/3) ... [2021-11-09 08:35:47,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d972951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:35:47, skipping insertion in model container [2021-11-09 08:35:47,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:35:47" (3/3) ... [2021-11-09 08:35:47,727 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product20.cil.c [2021-11-09 08:35:47,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:35:47,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 08:35:47,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:35:47,793 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 [2021-11-09 08:35:47,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 08:35:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 829 states have (on average 1.7659831121833534) internal successors, (1464), 835 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 08:35:47,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:47,850 INFO L513 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] [2021-11-09 08:35:47,851 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -892841702, now seen corresponding path program 1 times [2021-11-09 08:35:47,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:47,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79145717] [2021-11-09 08:35:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:47,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:48,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:48,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79145717] [2021-11-09 08:35:48,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79145717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:48,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:48,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:48,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174395172] [2021-11-09 08:35:48,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:48,372 INFO L87 Difference]: Start difference. First operand has 836 states, 829 states have (on average 1.7659831121833534) internal successors, (1464), 835 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2021-11-09 08:35:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:48,572 INFO L93 Difference]: Finished difference Result 2473 states and 4334 transitions. [2021-11-09 08:35:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:48,574 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 [2021-11-09 08:35:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:48,599 INFO L225 Difference]: With dead ends: 2473 [2021-11-09 08:35:48,599 INFO L226 Difference]: Without dead ends: 1480 [2021-11-09 08:35:48,606 INFO L786 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 [2021-11-09 08:35:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-11-09 08:35:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 749. [2021-11-09 08:35:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.756393001345895) internal successors, (1305), 748 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1305 transitions. [2021-11-09 08:35:48,709 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1305 transitions. Word has length 44 [2021-11-09 08:35:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:48,711 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1305 transitions. [2021-11-09 08:35:48,712 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) [2021-11-09 08:35:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1305 transitions. [2021-11-09 08:35:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:35:48,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:48,723 INFO L513 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] [2021-11-09 08:35:48,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:35:48,725 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash -877559560, now seen corresponding path program 1 times [2021-11-09 08:35:48,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:48,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194593459] [2021-11-09 08:35:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:48,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:48,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:48,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194593459] [2021-11-09 08:35:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194593459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:48,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:48,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:35:48,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022478726] [2021-11-09 08:35:48,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:35:48,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:35:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:48,876 INFO L87 Difference]: Start difference. First operand 749 states and 1305 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:49,104 INFO L93 Difference]: Finished difference Result 2196 states and 3831 transitions. [2021-11-09 08:35:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:35:49,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-09 08:35:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:49,120 INFO L225 Difference]: With dead ends: 2196 [2021-11-09 08:35:49,121 INFO L226 Difference]: Without dead ends: 1466 [2021-11-09 08:35:49,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:35:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-09 08:35:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 749. [2021-11-09 08:35:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.7550471063257065) internal successors, (1304), 748 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1304 transitions. [2021-11-09 08:35:49,191 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1304 transitions. Word has length 46 [2021-11-09 08:35:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:49,191 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1304 transitions. [2021-11-09 08:35:49,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1304 transitions. [2021-11-09 08:35:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 08:35:49,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:49,199 INFO L513 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] [2021-11-09 08:35:49,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:35:49,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash -768434811, now seen corresponding path program 1 times [2021-11-09 08:35:49,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:49,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077365585] [2021-11-09 08:35:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:49,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:49,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:49,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077365585] [2021-11-09 08:35:49,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077365585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:49,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:49,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030477820] [2021-11-09 08:35:49,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:49,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:49,371 INFO L87 Difference]: Start difference. First operand 749 states and 1304 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) 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) [2021-11-09 08:35:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:49,431 INFO L93 Difference]: Finished difference Result 1480 states and 2582 transitions. [2021-11-09 08:35:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) 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 [2021-11-09 08:35:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:49,437 INFO L225 Difference]: With dead ends: 1480 [2021-11-09 08:35:49,437 INFO L226 Difference]: Without dead ends: 754 [2021-11-09 08:35:49,439 INFO L786 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 [2021-11-09 08:35:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-09 08:35:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 749. [2021-11-09 08:35:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.7510094212651413) internal successors, (1301), 748 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1301 transitions. [2021-11-09 08:35:49,494 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1301 transitions. Word has length 47 [2021-11-09 08:35:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:49,495 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1301 transitions. [2021-11-09 08:35:49,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) 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) [2021-11-09 08:35:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1301 transitions. [2021-11-09 08:35:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 08:35:49,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:49,499 INFO L513 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] [2021-11-09 08:35:49,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:35:49,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash -907172448, now seen corresponding path program 1 times [2021-11-09 08:35:49,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:49,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890385531] [2021-11-09 08:35:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:49,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:49,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:49,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890385531] [2021-11-09 08:35:49,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890385531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:49,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:49,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:35:49,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194530919] [2021-11-09 08:35:49,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:35:49,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:35:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:49,631 INFO L87 Difference]: Start difference. First operand 749 states and 1301 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:49,851 INFO L93 Difference]: Finished difference Result 2186 states and 3811 transitions. [2021-11-09 08:35:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:35:49,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-09 08:35:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:49,863 INFO L225 Difference]: With dead ends: 2186 [2021-11-09 08:35:49,863 INFO L226 Difference]: Without dead ends: 1464 [2021-11-09 08:35:49,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:35:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-11-09 08:35:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 749. [2021-11-09 08:35:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.749663526244953) internal successors, (1300), 748 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1300 transitions. [2021-11-09 08:35:49,915 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1300 transitions. Word has length 49 [2021-11-09 08:35:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:49,915 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1300 transitions. [2021-11-09 08:35:49,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1300 transitions. [2021-11-09 08:35:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 08:35:49,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:49,919 INFO L513 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] [2021-11-09 08:35:49,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:35:49,919 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash -694324989, now seen corresponding path program 1 times [2021-11-09 08:35:49,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:49,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241619443] [2021-11-09 08:35:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:49,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:50,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:50,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241619443] [2021-11-09 08:35:50,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241619443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:50,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:50,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:35:50,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023973516] [2021-11-09 08:35:50,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:35:50,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:35:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:50,032 INFO L87 Difference]: Start difference. First operand 749 states and 1300 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:50,327 INFO L93 Difference]: Finished difference Result 2191 states and 3815 transitions. [2021-11-09 08:35:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:35:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-09 08:35:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:50,341 INFO L225 Difference]: With dead ends: 2191 [2021-11-09 08:35:50,342 INFO L226 Difference]: Without dead ends: 1469 [2021-11-09 08:35:50,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:35:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-09 08:35:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 749. [2021-11-09 08:35:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.7483176312247646) internal successors, (1299), 748 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1299 transitions. [2021-11-09 08:35:50,401 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1299 transitions. Word has length 50 [2021-11-09 08:35:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:50,401 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1299 transitions. [2021-11-09 08:35:50,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1299 transitions. [2021-11-09 08:35:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 08:35:50,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:50,405 INFO L513 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] [2021-11-09 08:35:50,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:35:50,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1665559579, now seen corresponding path program 1 times [2021-11-09 08:35:50,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:50,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884425647] [2021-11-09 08:35:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:50,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:50,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:50,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884425647] [2021-11-09 08:35:50,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884425647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:50,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:50,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:50,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409641641] [2021-11-09 08:35:50,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:50,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:50,520 INFO L87 Difference]: Start difference. First operand 749 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:50,574 INFO L93 Difference]: Finished difference Result 1217 states and 2092 transitions. [2021-11-09 08:35:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-09 08:35:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:50,584 INFO L225 Difference]: With dead ends: 1217 [2021-11-09 08:35:50,585 INFO L226 Difference]: Without dead ends: 752 [2021-11-09 08:35:50,586 INFO L786 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 [2021-11-09 08:35:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-09 08:35:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 751. [2021-11-09 08:35:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 745 states have (on average 1.7463087248322147) internal successors, (1301), 750 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1301 transitions. [2021-11-09 08:35:50,632 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1301 transitions. Word has length 51 [2021-11-09 08:35:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:50,633 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1301 transitions. [2021-11-09 08:35:50,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1301 transitions. [2021-11-09 08:35:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 08:35:50,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:50,635 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:35:50,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:35:50,635 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash 547153417, now seen corresponding path program 1 times [2021-11-09 08:35:50,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:50,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072979533] [2021-11-09 08:35:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:50,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:50,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:50,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072979533] [2021-11-09 08:35:50,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072979533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:50,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:50,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:50,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867813088] [2021-11-09 08:35:50,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:50,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:50,729 INFO L87 Difference]: Start difference. First operand 751 states and 1301 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:50,818 INFO L93 Difference]: Finished difference Result 2139 states and 3727 transitions. [2021-11-09 08:35:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 08:35:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:50,828 INFO L225 Difference]: With dead ends: 2139 [2021-11-09 08:35:50,829 INFO L226 Difference]: Without dead ends: 1419 [2021-11-09 08:35:50,830 INFO L786 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 [2021-11-09 08:35:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-09 08:35:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 954. [2021-11-09 08:35:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 948 states have (on average 1.7679324894514767) internal successors, (1676), 953 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1676 transitions. [2021-11-09 08:35:50,898 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1676 transitions. Word has length 59 [2021-11-09 08:35:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:50,899 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1676 transitions. [2021-11-09 08:35:50,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1676 transitions. [2021-11-09 08:35:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 08:35:50,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:50,901 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:35:50,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:35:50,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1643132568, now seen corresponding path program 1 times [2021-11-09 08:35:50,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:50,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472487014] [2021-11-09 08:35:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:50,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:50,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:50,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472487014] [2021-11-09 08:35:50,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472487014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:50,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:50,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:35:50,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278883421] [2021-11-09 08:35:50,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:35:50,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:50,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:35:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:50,989 INFO L87 Difference]: Start difference. First operand 954 states and 1676 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:51,407 INFO L93 Difference]: Finished difference Result 2792 states and 4934 transitions. [2021-11-09 08:35:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:35:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-09 08:35:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:51,420 INFO L225 Difference]: With dead ends: 2792 [2021-11-09 08:35:51,420 INFO L226 Difference]: Without dead ends: 1869 [2021-11-09 08:35:51,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:35:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2021-11-09 08:35:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 954. [2021-11-09 08:35:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 948 states have (on average 1.7658227848101267) internal successors, (1674), 953 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1674 transitions. [2021-11-09 08:35:51,513 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1674 transitions. Word has length 60 [2021-11-09 08:35:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:51,514 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1674 transitions. [2021-11-09 08:35:51,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1674 transitions. [2021-11-09 08:35:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:35:51,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:51,516 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:35:51,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:35:51,517 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1787459905, now seen corresponding path program 1 times [2021-11-09 08:35:51,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:51,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766785696] [2021-11-09 08:35:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:51,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:51,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:51,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766785696] [2021-11-09 08:35:51,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766785696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:51,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:51,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:51,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573478425] [2021-11-09 08:35:51,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:51,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:51,593 INFO L87 Difference]: Start difference. First operand 954 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:51,716 INFO L93 Difference]: Finished difference Result 2790 states and 4926 transitions. [2021-11-09 08:35:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:51,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 08:35:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:51,729 INFO L225 Difference]: With dead ends: 2790 [2021-11-09 08:35:51,729 INFO L226 Difference]: Without dead ends: 1867 [2021-11-09 08:35:51,732 INFO L786 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 [2021-11-09 08:35:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-09 08:35:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1402. [2021-11-09 08:35:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1396 states have (on average 1.7915472779369628) internal successors, (2501), 1401 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2501 transitions. [2021-11-09 08:35:51,830 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2501 transitions. Word has length 61 [2021-11-09 08:35:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:51,830 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 2501 transitions. [2021-11-09 08:35:51,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2501 transitions. [2021-11-09 08:35:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:35:51,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:51,833 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:35:51,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:35:51,834 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2114823331, now seen corresponding path program 1 times [2021-11-09 08:35:51,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:51,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841914350] [2021-11-09 08:35:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:51,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:51,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:51,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841914350] [2021-11-09 08:35:51,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841914350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:51,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917754352] [2021-11-09 08:35:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:51,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:51,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:35:51,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:35:51,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:35:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:52,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:35:52,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 08:35:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917754352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:52,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:35:52,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-09 08:35:52,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275896478] [2021-11-09 08:35:52,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:52,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:52,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:52,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:52,636 INFO L87 Difference]: Start difference. First operand 1402 states and 2501 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:52,736 INFO L93 Difference]: Finished difference Result 1760 states and 3107 transitions. [2021-11-09 08:35:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 08:35:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:52,746 INFO L225 Difference]: With dead ends: 1760 [2021-11-09 08:35:52,746 INFO L226 Difference]: Without dead ends: 1390 [2021-11-09 08:35:52,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-09 08:35:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2021-11-09 08:35:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1386 states have (on average 1.7914862914862915) internal successors, (2483), 1389 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2483 transitions. [2021-11-09 08:35:52,846 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2483 transitions. Word has length 61 [2021-11-09 08:35:52,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:52,846 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2483 transitions. [2021-11-09 08:35:52,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2483 transitions. [2021-11-09 08:35:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 08:35:52,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:52,851 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:35:52,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:35:53,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:35:53,066 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash 910896475, now seen corresponding path program 1 times [2021-11-09 08:35:53,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:53,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528822741] [2021-11-09 08:35:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:53,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:53,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:53,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528822741] [2021-11-09 08:35:53,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528822741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:53,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684528557] [2021-11-09 08:35:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:53,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:53,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:35:53,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:35:53,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:35:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:53,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:35:53,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:53,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684528557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:53,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:35:53,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 08:35:53,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584008977] [2021-11-09 08:35:53,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:35:53,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:35:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:53,796 INFO L87 Difference]: Start difference. First operand 1390 states and 2483 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:53,945 INFO L93 Difference]: Finished difference Result 2558 states and 4503 transitions. [2021-11-09 08:35:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:35:53,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 08:35:53,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:53,961 INFO L225 Difference]: With dead ends: 2558 [2021-11-09 08:35:53,961 INFO L226 Difference]: Without dead ends: 2105 [2021-11-09 08:35:53,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:35:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2021-11-09 08:35:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 1649. [2021-11-09 08:35:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1645 states have (on average 1.796352583586626) internal successors, (2955), 1648 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2955 transitions. [2021-11-09 08:35:54,086 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2955 transitions. Word has length 94 [2021-11-09 08:35:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:54,088 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2955 transitions. [2021-11-09 08:35:54,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2955 transitions. [2021-11-09 08:35:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 08:35:54,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:54,093 INFO L513 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] [2021-11-09 08:35:54,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:35:54,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1c72d1-28de-4a7a-a4c3-7ccce62afb72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 08:35:54,306 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1369722306, now seen corresponding path program 1 times [2021-11-09 08:35:54,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:54,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039039176] [2021-11-09 08:35:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:54,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:54,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:54,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039039176] [2021-11-09 08:35:54,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039039176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:54,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:54,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:54,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955124410] [2021-11-09 08:35:54,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:54,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:54,388 INFO L87 Difference]: Start difference. First operand 1649 states and 2955 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:54,582 INFO L93 Difference]: Finished difference Result 4538 states and 8157 transitions. [2021-11-09 08:35:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:54,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-09 08:35:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:54,602 INFO L225 Difference]: With dead ends: 4538 [2021-11-09 08:35:54,602 INFO L226 Difference]: Without dead ends: 2990 [2021-11-09 08:35:54,605 INFO L786 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 [2021-11-09 08:35:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-11-09 08:35:54,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2537. [2021-11-09 08:35:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2533 states have (on average 1.8112909593367548) internal successors, (4588), 2536 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 4588 transitions. [2021-11-09 08:35:54,778 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 4588 transitions. Word has length 98 [2021-11-09 08:35:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:54,778 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 4588 transitions. [2021-11-09 08:35:54,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 4588 transitions. [2021-11-09 08:35:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 08:35:54,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:54,785 INFO L513 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] [2021-11-09 08:35:54,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:35:54,785 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1456012098, now seen corresponding path program 1 times [2021-11-09 08:35:54,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:54,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321968500] [2021-11-09 08:35:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:54,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:54,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:54,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321968500] [2021-11-09 08:35:54,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321968500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:54,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:54,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:54,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544203120] [2021-11-09 08:35:54,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:54,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:54,888 INFO L87 Difference]: Start difference. First operand 2537 states and 4588 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:55,134 INFO L93 Difference]: Finished difference Result 6938 states and 12575 transitions. [2021-11-09 08:35:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:55,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-09 08:35:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:55,182 INFO L225 Difference]: With dead ends: 6938 [2021-11-09 08:35:55,182 INFO L226 Difference]: Without dead ends: 4536 [2021-11-09 08:35:55,187 INFO L786 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 [2021-11-09 08:35:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-11-09 08:35:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4083. [2021-11-09 08:35:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 4079 states have (on average 1.8212797254228978) internal successors, (7429), 4082 states have internal predecessors, (7429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 7429 transitions. [2021-11-09 08:35:55,483 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 7429 transitions. Word has length 99 [2021-11-09 08:35:55,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:55,484 INFO L470 AbstractCegarLoop]: Abstraction has 4083 states and 7429 transitions. [2021-11-09 08:35:55,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 7429 transitions. [2021-11-09 08:35:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:35:55,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:55,498 INFO L513 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] [2021-11-09 08:35:55,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:35:55,498 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1293642285, now seen corresponding path program 1 times [2021-11-09 08:35:55,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:55,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215343657] [2021-11-09 08:35:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:55,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:55,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:55,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215343657] [2021-11-09 08:35:55,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215343657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:55,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:55,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:55,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529699599] [2021-11-09 08:35:55,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:55,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:55,575 INFO L87 Difference]: Start difference. First operand 4083 states and 7429 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:55,993 INFO L93 Difference]: Finished difference Result 11292 states and 20581 transitions. [2021-11-09 08:35:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:55,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-09 08:35:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:56,018 INFO L225 Difference]: With dead ends: 11292 [2021-11-09 08:35:56,018 INFO L226 Difference]: Without dead ends: 7378 [2021-11-09 08:35:56,026 INFO L786 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 [2021-11-09 08:35:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2021-11-09 08:35:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 6925. [2021-11-09 08:35:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6925 states, 6921 states have (on average 1.827192602225112) internal successors, (12646), 6924 states have internal predecessors, (12646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 12646 transitions. [2021-11-09 08:35:56,518 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 12646 transitions. Word has length 100 [2021-11-09 08:35:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:56,519 INFO L470 AbstractCegarLoop]: Abstraction has 6925 states and 12646 transitions. [2021-11-09 08:35:56,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 12646 transitions. [2021-11-09 08:35:56,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 08:35:56,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:56,537 INFO L513 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] [2021-11-09 08:35:56,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:35:56,538 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2054486477, now seen corresponding path program 1 times [2021-11-09 08:35:56,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:56,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465551282] [2021-11-09 08:35:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:56,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:56,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:56,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465551282] [2021-11-09 08:35:56,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465551282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:56,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:56,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:56,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097712920] [2021-11-09 08:35:56,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:56,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:56,610 INFO L87 Difference]: Start difference. First operand 6925 states and 12646 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:57,254 INFO L93 Difference]: Finished difference Result 20276 states and 37074 transitions. [2021-11-09 08:35:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-09 08:35:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:57,298 INFO L225 Difference]: With dead ends: 20276 [2021-11-09 08:35:57,298 INFO L226 Difference]: Without dead ends: 13524 [2021-11-09 08:35:57,312 INFO L786 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 [2021-11-09 08:35:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13524 states. [2021-11-09 08:35:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13524 to 13071. [2021-11-09 08:35:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13071 states, 13067 states have (on average 1.8298767888574272) internal successors, (23911), 13070 states have internal predecessors, (23911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 23911 transitions. [2021-11-09 08:35:58,187 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 23911 transitions. Word has length 101 [2021-11-09 08:35:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:58,187 INFO L470 AbstractCegarLoop]: Abstraction has 13071 states and 23911 transitions. [2021-11-09 08:35:58,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 23911 transitions. [2021-11-09 08:35:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 08:35:58,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:58,220 INFO L513 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] [2021-11-09 08:35:58,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 08:35:58,220 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:35:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 332330270, now seen corresponding path program 1 times [2021-11-09 08:35:58,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:58,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893482504] [2021-11-09 08:35:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:58,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:58,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:58,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893482504] [2021-11-09 08:35:58,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893482504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:35:58,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:35:58,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:35:58,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456719235] [2021-11-09 08:35:58,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:35:58,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:58,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:35:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:35:58,316 INFO L87 Difference]: Start difference. First operand 13071 states and 23911 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:59,571 INFO L93 Difference]: Finished difference Result 38416 states and 70344 transitions. [2021-11-09 08:35:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:35:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-09 08:35:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:59,660 INFO L225 Difference]: With dead ends: 38416 [2021-11-09 08:35:59,660 INFO L226 Difference]: Without dead ends: 25526 [2021-11-09 08:35:59,684 INFO L786 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 [2021-11-09 08:35:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25526 states. [2021-11-09 08:36:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25526 to 25073. [2021-11-09 08:36:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25073 states, 25069 states have (on average 1.830787027803263) internal successors, (45896), 25072 states have internal predecessors, (45896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25073 states to 25073 states and 45896 transitions. [2021-11-09 08:36:01,060 INFO L78 Accepts]: Start accepts. Automaton has 25073 states and 45896 transitions. Word has length 102 [2021-11-09 08:36:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:01,060 INFO L470 AbstractCegarLoop]: Abstraction has 25073 states and 45896 transitions. [2021-11-09 08:36:01,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 25073 states and 45896 transitions. [2021-11-09 08:36:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 08:36:01,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:01,114 INFO L513 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] [2021-11-09 08:36:01,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 08:36:01,115 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:36:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1381453237, now seen corresponding path program 1 times [2021-11-09 08:36:01,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:01,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277360932] [2021-11-09 08:36:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:01,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:01,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:01,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277360932] [2021-11-09 08:36:01,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277360932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:36:01,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:36:01,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:36:01,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29550547] [2021-11-09 08:36:01,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:36:01,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:36:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:36:01,198 INFO L87 Difference]: Start difference. First operand 25073 states and 45896 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:03,631 INFO L93 Difference]: Finished difference Result 69061 states and 126035 transitions. [2021-11-09 08:36:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:36:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 08:36:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:03,790 INFO L225 Difference]: With dead ends: 69061 [2021-11-09 08:36:03,790 INFO L226 Difference]: Without dead ends: 44216 [2021-11-09 08:36:03,824 INFO L786 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 [2021-11-09 08:36:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44216 states. [2021-11-09 08:36:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44216 to 43763. [2021-11-09 08:36:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43763 states, 43759 states have (on average 1.819625677003588) internal successors, (79625), 43762 states have internal predecessors, (79625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 79625 transitions. [2021-11-09 08:36:06,059 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 79625 transitions. Word has length 103 [2021-11-09 08:36:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:06,060 INFO L470 AbstractCegarLoop]: Abstraction has 43763 states and 79625 transitions. [2021-11-09 08:36:06,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 79625 transitions. [2021-11-09 08:36:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:36:06,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:06,116 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:36:06,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 08:36:06,117 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:36:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:06,118 INFO L85 PathProgramCache]: Analyzing trace with hash 386552247, now seen corresponding path program 1 times [2021-11-09 08:36:06,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:06,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179238141] [2021-11-09 08:36:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:06,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 08:36:06,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:06,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179238141] [2021-11-09 08:36:06,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179238141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:36:06,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:36:06,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:36:06,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258016728] [2021-11-09 08:36:06,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:36:06,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:36:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:36:06,226 INFO L87 Difference]: Start difference. First operand 43763 states and 79625 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:09,516 INFO L93 Difference]: Finished difference Result 128906 states and 234524 transitions. [2021-11-09 08:36:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:36:09,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-09 08:36:09,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:09,864 INFO L225 Difference]: With dead ends: 128906 [2021-11-09 08:36:09,864 INFO L226 Difference]: Without dead ends: 85439 [2021-11-09 08:36:09,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:36:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85439 states. [2021-11-09 08:36:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85439 to 43763. [2021-11-09 08:36:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43763 states, 43759 states have (on average 1.8137297470234695) internal successors, (79367), 43762 states have internal predecessors, (79367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 79367 transitions. [2021-11-09 08:36:12,324 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 79367 transitions. Word has length 104 [2021-11-09 08:36:12,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:12,324 INFO L470 AbstractCegarLoop]: Abstraction has 43763 states and 79367 transitions. [2021-11-09 08:36:12,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 79367 transitions. [2021-11-09 08:36:12,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:36:12,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:12,352 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:36:12,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 08:36:12,353 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:36:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1307375399, now seen corresponding path program 2 times [2021-11-09 08:36:12,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:12,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059952905] [2021-11-09 08:36:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:12,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:12,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:12,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059952905] [2021-11-09 08:36:12,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059952905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:36:12,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:36:12,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:36:12,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590807810] [2021-11-09 08:36:12,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:36:12,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:36:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:36:12,595 INFO L87 Difference]: Start difference. First operand 43763 states and 79367 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:14,202 INFO L93 Difference]: Finished difference Result 87677 states and 158989 transitions. [2021-11-09 08:36:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:36:14,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-09 08:36:14,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:14,303 INFO L225 Difference]: With dead ends: 87677 [2021-11-09 08:36:14,304 INFO L226 Difference]: Without dead ends: 44216 [2021-11-09 08:36:14,339 INFO L786 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 [2021-11-09 08:36:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44216 states. [2021-11-09 08:36:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44216 to 43763. [2021-11-09 08:36:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43763 states, 43759 states have (on average 1.8108046344751936) internal successors, (79239), 43762 states have internal predecessors, (79239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 79239 transitions. [2021-11-09 08:36:16,159 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 79239 transitions. Word has length 104 [2021-11-09 08:36:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:16,159 INFO L470 AbstractCegarLoop]: Abstraction has 43763 states and 79239 transitions. [2021-11-09 08:36:16,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 79239 transitions. [2021-11-09 08:36:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:36:16,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:16,193 INFO L513 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] [2021-11-09 08:36:16,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 08:36:16,193 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:36:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash 232019468, now seen corresponding path program 1 times [2021-11-09 08:36:16,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:16,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471342061] [2021-11-09 08:36:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:16,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:16,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:16,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471342061] [2021-11-09 08:36:16,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471342061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:36:16,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:36:16,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:36:16,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26640620] [2021-11-09 08:36:16,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:36:16,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:36:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:36:16,272 INFO L87 Difference]: Start difference. First operand 43763 states and 79239 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:19,060 INFO L93 Difference]: Finished difference Result 122791 states and 222167 transitions. [2021-11-09 08:36:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:36:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-09 08:36:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:19,257 INFO L225 Difference]: With dead ends: 122791 [2021-11-09 08:36:19,258 INFO L226 Difference]: Without dead ends: 79290 [2021-11-09 08:36:19,302 INFO L786 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 [2021-11-09 08:36:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79290 states. [2021-11-09 08:36:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79290 to 78837. [2021-11-09 08:36:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78837 states, 78833 states have (on average 1.8056397701470197) internal successors, (142344), 78836 states have internal predecessors, (142344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78837 states to 78837 states and 142344 transitions. [2021-11-09 08:36:22,859 INFO L78 Accepts]: Start accepts. Automaton has 78837 states and 142344 transitions. Word has length 104 [2021-11-09 08:36:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:22,859 INFO L470 AbstractCegarLoop]: Abstraction has 78837 states and 142344 transitions. [2021-11-09 08:36:22,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 78837 states and 142344 transitions. [2021-11-09 08:36:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 08:36:22,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:22,914 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:36:22,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 08:36:22,914 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:36:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1625499437, now seen corresponding path program 1 times [2021-11-09 08:36:22,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:22,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545401378] [2021-11-09 08:36:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:22,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:36:23,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:23,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545401378] [2021-11-09 08:36:23,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545401378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:36:23,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:36:23,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:36:23,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539658650] [2021-11-09 08:36:23,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:36:23,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:36:23,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:36:23,036 INFO L87 Difference]: Start difference. First operand 78837 states and 142344 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:30,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:30,155 INFO L93 Difference]: Finished difference Result 160410 states and 289254 transitions. [2021-11-09 08:36:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 08:36:30,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-09 08:36:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:30,501 INFO L225 Difference]: With dead ends: 160410 [2021-11-09 08:36:30,501 INFO L226 Difference]: Without dead ends: 160014 [2021-11-09 08:36:30,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:36:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160014 states. [2021-11-09 08:36:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160014 to 157403. [2021-11-09 08:36:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157403 states, 157399 states have (on average 1.8058056277358814) internal successors, (284232), 157402 states have internal predecessors, (284232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157403 states to 157403 states and 284232 transitions. [2021-11-09 08:36:37,816 INFO L78 Accepts]: Start accepts. Automaton has 157403 states and 284232 transitions. Word has length 105 [2021-11-09 08:36:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:37,817 INFO L470 AbstractCegarLoop]: Abstraction has 157403 states and 284232 transitions. [2021-11-09 08:36:37,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 157403 states and 284232 transitions. [2021-11-09 08:36:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 08:36:37,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:37,886 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-09 08:36:37,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 08:36:37,886 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 08:36:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:37,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1223143988, now seen corresponding path program 1 times [2021-11-09 08:36:37,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:37,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747559412] [2021-11-09 08:36:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:37,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:36:37,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:37,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747559412] [2021-11-09 08:36:37,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747559412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:36:37,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:36:37,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:36:37,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710192367] [2021-11-09 08:36:37,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:36:37,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:36:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:36:37,961 INFO L87 Difference]: Start difference. First operand 157403 states and 284232 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)