./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU --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 d13022ac5777526b0e211d2bc2c4786b4fd03965aed567ff73b5cfbb8c2cd97a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:48:47,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:48:47,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:48:47,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:48:47,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:48:47,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:48:47,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:48:47,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:48:47,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:48:47,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:48:47,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:48:47,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:48:47,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:48:47,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:48:47,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:48:47,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:48:47,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:48:47,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:48:47,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:48:47,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:48:47,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:48:47,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:48:47,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:48:47,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:48:47,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:48:47,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:48:47,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:48:47,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:48:47,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:48:47,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:48:47,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:48:47,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:48:47,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:48:47,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:48:47,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:48:47,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:48:47,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:48:47,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:48:47,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:48:47,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:48:47,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:48:47,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:48:47,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:48:47,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:48:47,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:48:47,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:48:47,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:48:47,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:48:47,937 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:48:47,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:48:47,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:48:47,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:48:47,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:48:47,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:48:47,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:48:47,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:48:47,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:48:47,939 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:48:47,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:48:47,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:48:47,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:48:47,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:48:47,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:48:47,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:48:47,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:48:47,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:48:47,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:48:47,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:48:47,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:48:47,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:48:47,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:48:47,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:48:47,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:48:47,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:48:47,942 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_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13022ac5777526b0e211d2bc2c4786b4fd03965aed567ff73b5cfbb8c2cd97a [2021-11-02 22:48:48,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:48:48,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:48:48,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:48:48,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:48:48,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:48:48,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c [2021-11-02 22:48:48,309 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/data/9b8e34b9a/49982d674d1642fa95736721406906dc/FLAGa5d99ca6f [2021-11-02 22:48:48,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:48:48,909 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c [2021-11-02 22:48:48,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/data/9b8e34b9a/49982d674d1642fa95736721406906dc/FLAGa5d99ca6f [2021-11-02 22:48:49,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/data/9b8e34b9a/49982d674d1642fa95736721406906dc [2021-11-02 22:48:49,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:48:49,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:48:49,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:48:49,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:48:49,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:48:49,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:48:49" (1/1) ... [2021-11-02 22:48:49,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394484f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:49, skipping insertion in model container [2021-11-02 22:48:49,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:48:49" (1/1) ... [2021-11-02 22:48:49,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:48:49,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:48:49,617 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_7617c099-17a5-457c-a07d-bc044388c4ff/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c[17959,17972] [2021-11-02 22:48:49,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:48:49,890 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:48:49,942 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_7617c099-17a5-457c-a07d-bc044388c4ff/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c[17959,17972] [2021-11-02 22:48:50,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:48:50,071 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:48:50,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50 WrapperNode [2021-11-02 22:48:50,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:48:50,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:48:50,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:48:50,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:48:50,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:48:50,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:48:50,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:48:50,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:48:50,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:48:50,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:48:50,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:48:50,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:48:50,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (1/1) ... [2021-11-02 22:48:50,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:48:50,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:50,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:48:50,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:48:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-02 22:48:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:48:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:48:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:48:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:48:52,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:48:52,629 INFO L299 CfgBuilder]: Removed 373 assume(true) statements. [2021-11-02 22:48:52,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:48:52 BoogieIcfgContainer [2021-11-02 22:48:52,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:48:52,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:48:52,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:48:52,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:48:52,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:48:49" (1/3) ... [2021-11-02 22:48:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f18e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:48:52, skipping insertion in model container [2021-11-02 22:48:52,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:48:50" (2/3) ... [2021-11-02 22:48:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f18e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:48:52, skipping insertion in model container [2021-11-02 22:48:52,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:48:52" (3/3) ... [2021-11-02 22:48:52,643 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product39.cil.c [2021-11-02 22:48:52,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:48:52,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:48:52,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:48:52,712 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 [2021-11-02 22:48:52,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:48:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 548 states, 541 states have (on average 1.7634011090573012) internal successors, (954), 547 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:52,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 22:48:52,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:52,755 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] [2021-11-02 22:48:52,755 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)] === [2021-11-02 22:48:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1115525173, now seen corresponding path program 1 times [2021-11-02 22:48:52,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:52,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676330688] [2021-11-02 22:48:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:52,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:53,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:53,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676330688] [2021-11-02 22:48:53,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676330688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:53,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:53,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:53,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409330747] [2021-11-02 22:48:53,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:53,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:53,302 INFO L87 Difference]: Start difference. First operand has 548 states, 541 states have (on average 1.7634011090573012) internal successors, (954), 547 states have internal predecessors, (954), 0 states have call successors, (0), 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 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:53,546 INFO L93 Difference]: Finished difference Result 1609 states and 2804 transitions. [2021-11-02 22:48:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:53,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-02 22:48:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:53,579 INFO L225 Difference]: With dead ends: 1609 [2021-11-02 22:48:53,580 INFO L226 Difference]: Without dead ends: 1040 [2021-11-02 22:48:53,590 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 [2021-11-02 22:48:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-02 22:48:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 529. [2021-11-02 22:48:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 523 states have (on average 1.7418738049713194) internal successors, (911), 528 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 911 transitions. [2021-11-02 22:48:53,703 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 911 transitions. Word has length 41 [2021-11-02 22:48:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:53,703 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 911 transitions. [2021-11-02 22:48:53,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 911 transitions. [2021-11-02 22:48:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:48:53,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:53,714 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] [2021-11-02 22:48:53,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:48:53,714 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)] === [2021-11-02 22:48:53,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1295285421, now seen corresponding path program 1 times [2021-11-02 22:48:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:53,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341601763] [2021-11-02 22:48:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:53,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:53,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:53,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341601763] [2021-11-02 22:48:53,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341601763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:53,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:53,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:48:53,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526636976] [2021-11-02 22:48:53,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:48:53,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:48:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:53,885 INFO L87 Difference]: Start difference. First operand 529 states and 911 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:54,109 INFO L93 Difference]: Finished difference Result 1536 states and 2649 transitions. [2021-11-02 22:48:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:48:54,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-02 22:48:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:54,117 INFO L225 Difference]: With dead ends: 1536 [2021-11-02 22:48:54,118 INFO L226 Difference]: Without dead ends: 1026 [2021-11-02 22:48:54,120 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 [2021-11-02 22:48:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-11-02 22:48:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 529. [2021-11-02 22:48:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 523 states have (on average 1.739961759082218) internal successors, (910), 528 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 910 transitions. [2021-11-02 22:48:54,171 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 910 transitions. Word has length 43 [2021-11-02 22:48:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:54,172 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 910 transitions. [2021-11-02 22:48:54,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 910 transitions. [2021-11-02 22:48:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:48:54,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:54,175 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] [2021-11-02 22:48:54,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:48:54,175 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)] === [2021-11-02 22:48:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1185575744, now seen corresponding path program 1 times [2021-11-02 22:48:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:54,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519596483] [2021-11-02 22:48:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:54,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:54,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:54,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519596483] [2021-11-02 22:48:54,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519596483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:54,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:54,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:54,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101409079] [2021-11-02 22:48:54,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:54,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:54,251 INFO L87 Difference]: Start difference. First operand 529 states and 910 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:54,297 INFO L93 Difference]: Finished difference Result 1040 states and 1794 transitions. [2021-11-02 22:48:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:54,297 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 [2021-11-02 22:48:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:54,301 INFO L225 Difference]: With dead ends: 1040 [2021-11-02 22:48:54,302 INFO L226 Difference]: Without dead ends: 534 [2021-11-02 22:48:54,303 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 [2021-11-02 22:48:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-02 22:48:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 529. [2021-11-02 22:48:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 523 states have (on average 1.7342256214149139) internal successors, (907), 528 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 907 transitions. [2021-11-02 22:48:54,325 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 907 transitions. Word has length 44 [2021-11-02 22:48:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:54,326 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 907 transitions. [2021-11-02 22:48:54,326 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) [2021-11-02 22:48:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 907 transitions. [2021-11-02 22:48:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:48:54,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:54,328 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] [2021-11-02 22:48:54,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:48:54,329 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)] === [2021-11-02 22:48:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1338844923, now seen corresponding path program 1 times [2021-11-02 22:48:54,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:54,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206815199] [2021-11-02 22:48:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:54,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:54,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:54,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206815199] [2021-11-02 22:48:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206815199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:54,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:54,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:48:54,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369967078] [2021-11-02 22:48:54,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:48:54,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:48:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:54,432 INFO L87 Difference]: Start difference. First operand 529 states and 907 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) [2021-11-02 22:48:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:54,599 INFO L93 Difference]: Finished difference Result 1526 states and 2629 transitions. [2021-11-02 22:48:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:48:54,600 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 [2021-11-02 22:48:54,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:54,607 INFO L225 Difference]: With dead ends: 1526 [2021-11-02 22:48:54,608 INFO L226 Difference]: Without dead ends: 1024 [2021-11-02 22:48:54,610 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 [2021-11-02 22:48:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-02 22:48:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 529. [2021-11-02 22:48:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 523 states have (on average 1.7323135755258126) internal successors, (906), 528 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 906 transitions. [2021-11-02 22:48:54,660 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 906 transitions. Word has length 46 [2021-11-02 22:48:54,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:54,660 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 906 transitions. [2021-11-02 22:48:54,660 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) [2021-11-02 22:48:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 906 transitions. [2021-11-02 22:48:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:48:54,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:54,662 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] [2021-11-02 22:48:54,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:48:54,663 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)] === [2021-11-02 22:48:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:54,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2100920190, now seen corresponding path program 1 times [2021-11-02 22:48:54,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:54,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651549930] [2021-11-02 22:48:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:54,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:54,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:54,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651549930] [2021-11-02 22:48:54,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651549930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:54,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:54,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:48:54,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262484690] [2021-11-02 22:48:54,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:48:54,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:54,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:48:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:54,739 INFO L87 Difference]: Start difference. First operand 529 states and 906 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-02 22:48:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:54,888 INFO L93 Difference]: Finished difference Result 1531 states and 2633 transitions. [2021-11-02 22:48:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:48:54,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 [2021-11-02 22:48:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:54,895 INFO L225 Difference]: With dead ends: 1531 [2021-11-02 22:48:54,896 INFO L226 Difference]: Without dead ends: 1029 [2021-11-02 22:48:54,897 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 [2021-11-02 22:48:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-02 22:48:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 529. [2021-11-02 22:48:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 523 states have (on average 1.7304015296367112) internal successors, (905), 528 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 905 transitions. [2021-11-02 22:48:54,933 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 905 transitions. Word has length 47 [2021-11-02 22:48:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:54,934 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 905 transitions. [2021-11-02 22:48:54,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-02 22:48:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 905 transitions. [2021-11-02 22:48:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 22:48:54,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:54,936 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] [2021-11-02 22:48:54,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:48:54,937 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)] === [2021-11-02 22:48:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 557653098, now seen corresponding path program 1 times [2021-11-02 22:48:54,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:54,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780320972] [2021-11-02 22:48:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:54,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:54,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:55,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780320972] [2021-11-02 22:48:55,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780320972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:55,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:55,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:55,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542068785] [2021-11-02 22:48:55,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:55,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:55,002 INFO L87 Difference]: Start difference. First operand 529 states and 905 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:55,037 INFO L93 Difference]: Finished difference Result 777 states and 1304 transitions. [2021-11-02 22:48:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-02 22:48:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:55,041 INFO L225 Difference]: With dead ends: 777 [2021-11-02 22:48:55,042 INFO L226 Difference]: Without dead ends: 532 [2021-11-02 22:48:55,043 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 [2021-11-02 22:48:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-02 22:48:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2021-11-02 22:48:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 525 states have (on average 1.7276190476190476) internal successors, (907), 530 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 907 transitions. [2021-11-02 22:48:55,074 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 907 transitions. Word has length 48 [2021-11-02 22:48:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:55,074 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 907 transitions. [2021-11-02 22:48:55,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 907 transitions. [2021-11-02 22:48:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:48:55,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:55,084 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] [2021-11-02 22:48:55,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:48:55,085 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)] === [2021-11-02 22:48:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1958438596, now seen corresponding path program 1 times [2021-11-02 22:48:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:55,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692007084] [2021-11-02 22:48:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:55,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:55,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:55,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692007084] [2021-11-02 22:48:55,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692007084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:55,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:55,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:55,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481193546] [2021-11-02 22:48:55,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:55,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:55,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:55,149 INFO L87 Difference]: Start difference. First operand 531 states and 907 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:55,214 INFO L93 Difference]: Finished difference Result 1479 states and 2545 transitions. [2021-11-02 22:48:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:48:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:55,221 INFO L225 Difference]: With dead ends: 1479 [2021-11-02 22:48:55,222 INFO L226 Difference]: Without dead ends: 979 [2021-11-02 22:48:55,223 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 [2021-11-02 22:48:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-02 22:48:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 734. [2021-11-02 22:48:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 728 states have (on average 1.760989010989011) internal successors, (1282), 733 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1282 transitions. [2021-11-02 22:48:55,270 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1282 transitions. Word has length 56 [2021-11-02 22:48:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:55,271 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1282 transitions. [2021-11-02 22:48:55,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1282 transitions. [2021-11-02 22:48:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:48:55,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:55,273 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] [2021-11-02 22:48:55,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:48:55,274 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)] === [2021-11-02 22:48:55,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 226527805, now seen corresponding path program 1 times [2021-11-02 22:48:55,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:55,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355656771] [2021-11-02 22:48:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:55,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:55,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:55,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355656771] [2021-11-02 22:48:55,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355656771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:55,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:55,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:48:55,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94170299] [2021-11-02 22:48:55,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:48:55,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:48:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:55,366 INFO L87 Difference]: Start difference. First operand 734 states and 1282 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:55,738 INFO L93 Difference]: Finished difference Result 2132 states and 3752 transitions. [2021-11-02 22:48:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:48:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 22:48:55,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:55,749 INFO L225 Difference]: With dead ends: 2132 [2021-11-02 22:48:55,749 INFO L226 Difference]: Without dead ends: 1429 [2021-11-02 22:48:55,751 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 [2021-11-02 22:48:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2021-11-02 22:48:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 734. [2021-11-02 22:48:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 728 states have (on average 1.7582417582417582) internal successors, (1280), 733 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1280 transitions. [2021-11-02 22:48:55,839 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1280 transitions. Word has length 57 [2021-11-02 22:48:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:55,840 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1280 transitions. [2021-11-02 22:48:55,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1280 transitions. [2021-11-02 22:48:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:48:55,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:55,842 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] [2021-11-02 22:48:55,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:48:55,843 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)] === [2021-11-02 22:48:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1274061894, now seen corresponding path program 1 times [2021-11-02 22:48:55,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:55,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55115415] [2021-11-02 22:48:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:55,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:55,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:55,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55115415] [2021-11-02 22:48:55,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55115415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:55,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:55,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:55,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551624900] [2021-11-02 22:48:55,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:55,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:55,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:55,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:55,903 INFO L87 Difference]: Start difference. First operand 734 states and 1280 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:56,007 INFO L93 Difference]: Finished difference Result 2130 states and 3744 transitions. [2021-11-02 22:48:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:56,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-02 22:48:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:56,017 INFO L225 Difference]: With dead ends: 2130 [2021-11-02 22:48:56,018 INFO L226 Difference]: Without dead ends: 1427 [2021-11-02 22:48:56,019 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 [2021-11-02 22:48:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-02 22:48:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1182. [2021-11-02 22:48:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.7916666666666667) internal successors, (2107), 1181 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2107 transitions. [2021-11-02 22:48:56,099 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2107 transitions. Word has length 58 [2021-11-02 22:48:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:56,100 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 2107 transitions. [2021-11-02 22:48:56,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2107 transitions. [2021-11-02 22:48:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:48:56,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:56,102 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] [2021-11-02 22:48:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:48:56,103 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)] === [2021-11-02 22:48:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1786821528, now seen corresponding path program 1 times [2021-11-02 22:48:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:56,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211629060] [2021-11-02 22:48:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:56,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:56,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:56,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211629060] [2021-11-02 22:48:56,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211629060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:56,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653312850] [2021-11-02 22:48:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:56,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:56,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:56,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:56,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:48:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:56,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:48:56,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:56,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653312850] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:56,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:56,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:48:56,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761864418] [2021-11-02 22:48:56,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:48:56,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:48:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:56,734 INFO L87 Difference]: Start difference. First operand 1182 states and 2107 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:56,907 INFO L93 Difference]: Finished difference Result 1934 states and 3375 transitions. [2021-11-02 22:48:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:48:56,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 58 [2021-11-02 22:48:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:56,918 INFO L225 Difference]: With dead ends: 1934 [2021-11-02 22:48:56,918 INFO L226 Difference]: Without dead ends: 1689 [2021-11-02 22:48:56,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-11-02 22:48:57,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1441. [2021-11-02 22:48:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1435 states have (on average 1.797212543554007) internal successors, (2579), 1440 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2579 transitions. [2021-11-02 22:48:57,047 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2579 transitions. Word has length 58 [2021-11-02 22:48:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:57,048 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 2579 transitions. [2021-11-02 22:48:57,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2579 transitions. [2021-11-02 22:48:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:48:57,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:57,051 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] [2021-11-02 22:48:57,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:57,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617c099-17a5-457c-a07d-bc044388c4ff/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:48:57,267 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:48:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash -352452917, now seen corresponding path program 1 times [2021-11-02 22:48:57,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:57,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692651453] [2021-11-02 22:48:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:57,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:57,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:57,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692651453] [2021-11-02 22:48:57,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692651453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:57,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:57,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732082649] [2021-11-02 22:48:57,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:57,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:57,336 INFO L87 Difference]: Start difference. First operand 1441 states and 2579 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:57,507 INFO L93 Difference]: Finished difference Result 3914 states and 7029 transitions. [2021-11-02 22:48:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:57,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-02 22:48:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:57,525 INFO L225 Difference]: With dead ends: 3914 [2021-11-02 22:48:57,525 INFO L226 Difference]: Without dead ends: 2574 [2021-11-02 22:48:57,529 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 [2021-11-02 22:48:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-11-02 22:48:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2329. [2021-11-02 22:48:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2323 states have (on average 1.813172621609987) internal successors, (4212), 2328 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4212 transitions. [2021-11-02 22:48:57,688 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4212 transitions. Word has length 62 [2021-11-02 22:48:57,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:57,688 INFO L470 AbstractCegarLoop]: Abstraction has 2329 states and 4212 transitions. [2021-11-02 22:48:57,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4212 transitions. [2021-11-02 22:48:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:48:57,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:57,693 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] [2021-11-02 22:48:57,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:48:57,693 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:48:57,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 475042123, now seen corresponding path program 1 times [2021-11-02 22:48:57,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:57,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455888704] [2021-11-02 22:48:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:57,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:57,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:57,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455888704] [2021-11-02 22:48:57,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455888704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:57,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:57,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:57,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163370754] [2021-11-02 22:48:57,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:57,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:57,755 INFO L87 Difference]: Start difference. First operand 2329 states and 4212 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:57,993 INFO L93 Difference]: Finished difference Result 6314 states and 11447 transitions. [2021-11-02 22:48:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-02 22:48:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:58,020 INFO L225 Difference]: With dead ends: 6314 [2021-11-02 22:48:58,021 INFO L226 Difference]: Without dead ends: 4120 [2021-11-02 22:48:58,024 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 [2021-11-02 22:48:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-11-02 22:48:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3875. [2021-11-02 22:48:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3875 states, 3869 states have (on average 1.8229516670974413) internal successors, (7053), 3874 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 7053 transitions. [2021-11-02 22:48:58,261 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 7053 transitions. Word has length 63 [2021-11-02 22:48:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:58,262 INFO L470 AbstractCegarLoop]: Abstraction has 3875 states and 7053 transitions. [2021-11-02 22:48:58,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 7053 transitions. [2021-11-02 22:48:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:48:58,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:58,266 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] [2021-11-02 22:48:58,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:48:58,267 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:48:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash 46039610, now seen corresponding path program 1 times [2021-11-02 22:48:58,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:58,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14310139] [2021-11-02 22:48:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:58,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:58,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:58,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14310139] [2021-11-02 22:48:58,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14310139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:58,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:58,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:58,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123670315] [2021-11-02 22:48:58,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:58,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:58,326 INFO L87 Difference]: Start difference. First operand 3875 states and 7053 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:58,649 INFO L93 Difference]: Finished difference Result 10668 states and 19453 transitions. [2021-11-02 22:48:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:58,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-02 22:48:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:58,695 INFO L225 Difference]: With dead ends: 10668 [2021-11-02 22:48:58,695 INFO L226 Difference]: Without dead ends: 6962 [2021-11-02 22:48:58,702 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 [2021-11-02 22:48:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6962 states. [2021-11-02 22:48:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 6717. [2021-11-02 22:48:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 6711 states have (on average 1.8283415288332587) internal successors, (12270), 6716 states have internal predecessors, (12270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 12270 transitions. [2021-11-02 22:48:59,174 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 12270 transitions. Word has length 64 [2021-11-02 22:48:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:59,174 INFO L470 AbstractCegarLoop]: Abstraction has 6717 states and 12270 transitions. [2021-11-02 22:48:59,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 12270 transitions. [2021-11-02 22:48:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 22:48:59,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:59,180 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] [2021-11-02 22:48:59,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:48:59,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:48:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -235445798, now seen corresponding path program 1 times [2021-11-02 22:48:59,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:59,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272064614] [2021-11-02 22:48:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:59,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:59,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:59,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272064614] [2021-11-02 22:48:59,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272064614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:59,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:59,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:48:59,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8822725] [2021-11-02 22:48:59,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:48:59,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:48:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:48:59,241 INFO L87 Difference]: Start difference. First operand 6717 states and 12270 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:59,868 INFO L93 Difference]: Finished difference Result 19652 states and 35946 transitions. [2021-11-02 22:48:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:48:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-02 22:48:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:59,910 INFO L225 Difference]: With dead ends: 19652 [2021-11-02 22:48:59,910 INFO L226 Difference]: Without dead ends: 13108 [2021-11-02 22:48:59,920 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 [2021-11-02 22:48:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13108 states. [2021-11-02 22:49:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 12863. [2021-11-02 22:49:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12863 states, 12857 states have (on average 1.830520339114879) internal successors, (23535), 12862 states have internal predecessors, (23535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12863 states to 12863 states and 23535 transitions. [2021-11-02 22:49:00,633 INFO L78 Accepts]: Start accepts. Automaton has 12863 states and 23535 transitions. Word has length 65 [2021-11-02 22:49:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:00,633 INFO L470 AbstractCegarLoop]: Abstraction has 12863 states and 23535 transitions. [2021-11-02 22:49:00,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 12863 states and 23535 transitions. [2021-11-02 22:49:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:49:00,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:00,641 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] [2021-11-02 22:49:00,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:49:00,641 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1614204501, now seen corresponding path program 1 times [2021-11-02 22:49:00,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:00,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678865855] [2021-11-02 22:49:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:00,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:00,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:00,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678865855] [2021-11-02 22:49:00,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678865855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:00,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:00,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:49:00,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029040006] [2021-11-02 22:49:00,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:49:00,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:49:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:49:00,709 INFO L87 Difference]: Start difference. First operand 12863 states and 23535 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:01,705 INFO L93 Difference]: Finished difference Result 37792 states and 69216 transitions. [2021-11-02 22:49:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:49:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 22:49:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:01,790 INFO L225 Difference]: With dead ends: 37792 [2021-11-02 22:49:01,790 INFO L226 Difference]: Without dead ends: 25110 [2021-11-02 22:49:01,814 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 [2021-11-02 22:49:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25110 states. [2021-11-02 22:49:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25110 to 24865. [2021-11-02 22:49:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24865 states, 24859 states have (on average 1.8311275594352145) internal successors, (45520), 24864 states have internal predecessors, (45520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24865 states to 24865 states and 45520 transitions. [2021-11-02 22:49:03,107 INFO L78 Accepts]: Start accepts. Automaton has 24865 states and 45520 transitions. Word has length 66 [2021-11-02 22:49:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:03,107 INFO L470 AbstractCegarLoop]: Abstraction has 24865 states and 45520 transitions. [2021-11-02 22:49:03,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 24865 states and 45520 transitions. [2021-11-02 22:49:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:49:03,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:03,116 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] [2021-11-02 22:49:03,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:49:03,116 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -529235624, now seen corresponding path program 1 times [2021-11-02 22:49:03,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:03,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151297649] [2021-11-02 22:49:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:03,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:03,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:03,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151297649] [2021-11-02 22:49:03,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151297649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:03,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:03,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:49:03,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475060028] [2021-11-02 22:49:03,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:49:03,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:03,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:49:03,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:49:03,200 INFO L87 Difference]: Start difference. First operand 24865 states and 45520 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:04,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:04,804 INFO L93 Difference]: Finished difference Result 68437 states and 124907 transitions. [2021-11-02 22:49:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:49:04,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-02 22:49:04,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:04,932 INFO L225 Difference]: With dead ends: 68437 [2021-11-02 22:49:04,932 INFO L226 Difference]: Without dead ends: 43800 [2021-11-02 22:49:04,959 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 [2021-11-02 22:49:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43800 states. [2021-11-02 22:49:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43800 to 43555. [2021-11-02 22:49:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43555 states, 43549 states have (on average 1.819766240326988) internal successors, (79249), 43554 states have internal predecessors, (79249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43555 states to 43555 states and 79249 transitions. [2021-11-02 22:49:07,344 INFO L78 Accepts]: Start accepts. Automaton has 43555 states and 79249 transitions. Word has length 67 [2021-11-02 22:49:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:07,344 INFO L470 AbstractCegarLoop]: Abstraction has 43555 states and 79249 transitions. [2021-11-02 22:49:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 43555 states and 79249 transitions. [2021-11-02 22:49:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:49:07,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:07,355 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] [2021-11-02 22:49:07,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:49:07,355 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1742169796, now seen corresponding path program 1 times [2021-11-02 22:49:07,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:07,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138829074] [2021-11-02 22:49:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:07,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:49:07,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:07,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138829074] [2021-11-02 22:49:07,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138829074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:07,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:07,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:49:07,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110871597] [2021-11-02 22:49:07,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:49:07,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:49:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:49:07,440 INFO L87 Difference]: Start difference. First operand 43555 states and 79249 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:10,325 INFO L93 Difference]: Finished difference Result 128282 states and 233396 transitions. [2021-11-02 22:49:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:49:10,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 22:49:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:10,616 INFO L225 Difference]: With dead ends: 128282 [2021-11-02 22:49:10,616 INFO L226 Difference]: Without dead ends: 85023 [2021-11-02 22:49:10,692 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 [2021-11-02 22:49:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85023 states. [2021-11-02 22:49:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85023 to 43555. [2021-11-02 22:49:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43555 states, 43549 states have (on average 1.81384187926244) internal successors, (78991), 43554 states have internal predecessors, (78991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43555 states to 43555 states and 78991 transitions. [2021-11-02 22:49:13,024 INFO L78 Accepts]: Start accepts. Automaton has 43555 states and 78991 transitions. Word has length 68 [2021-11-02 22:49:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:13,024 INFO L470 AbstractCegarLoop]: Abstraction has 43555 states and 78991 transitions. [2021-11-02 22:49:13,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 43555 states and 78991 transitions. [2021-11-02 22:49:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:49:13,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:13,032 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] [2021-11-02 22:49:13,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:49:13,033 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1318713626, now seen corresponding path program 2 times [2021-11-02 22:49:13,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:13,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524577577] [2021-11-02 22:49:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:13,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:13,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:13,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524577577] [2021-11-02 22:49:13,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524577577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:13,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:13,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:49:13,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382125996] [2021-11-02 22:49:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:49:13,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:49:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:49:13,102 INFO L87 Difference]: Start difference. First operand 43555 states and 78991 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:15,038 INFO L93 Difference]: Finished difference Result 87053 states and 157861 transitions. [2021-11-02 22:49:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:49:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 22:49:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:15,124 INFO L225 Difference]: With dead ends: 87053 [2021-11-02 22:49:15,125 INFO L226 Difference]: Without dead ends: 43800 [2021-11-02 22:49:15,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:49:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43800 states. [2021-11-02 22:49:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43800 to 43555. [2021-11-02 22:49:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43555 states, 43549 states have (on average 1.810902661369951) internal successors, (78863), 43554 states have internal predecessors, (78863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43555 states to 43555 states and 78863 transitions. [2021-11-02 22:49:16,978 INFO L78 Accepts]: Start accepts. Automaton has 43555 states and 78863 transitions. Word has length 68 [2021-11-02 22:49:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:16,978 INFO L470 AbstractCegarLoop]: Abstraction has 43555 states and 78863 transitions. [2021-11-02 22:49:16,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 43555 states and 78863 transitions. [2021-11-02 22:49:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:49:16,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:16,991 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] [2021-11-02 22:49:16,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:49:16,992 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1749323367, now seen corresponding path program 1 times [2021-11-02 22:49:16,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:16,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952665477] [2021-11-02 22:49:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:16,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:17,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:17,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952665477] [2021-11-02 22:49:17,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952665477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:17,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:17,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:49:17,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654633632] [2021-11-02 22:49:17,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:49:17,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:49:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:49:17,060 INFO L87 Difference]: Start difference. First operand 43555 states and 78863 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:19,861 INFO L93 Difference]: Finished difference Result 122167 states and 221039 transitions. [2021-11-02 22:49:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:49:19,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 22:49:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:20,012 INFO L225 Difference]: With dead ends: 122167 [2021-11-02 22:49:20,012 INFO L226 Difference]: Without dead ends: 78874 [2021-11-02 22:49:20,049 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 [2021-11-02 22:49:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78874 states. [2021-11-02 22:49:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78874 to 78629. [2021-11-02 22:49:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78629 states, 78623 states have (on average 1.805680271676227) internal successors, (141968), 78628 states have internal predecessors, (141968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78629 states to 78629 states and 141968 transitions. [2021-11-02 22:49:23,567 INFO L78 Accepts]: Start accepts. Automaton has 78629 states and 141968 transitions. Word has length 68 [2021-11-02 22:49:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:23,567 INFO L470 AbstractCegarLoop]: Abstraction has 78629 states and 141968 transitions. [2021-11-02 22:49:23,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 78629 states and 141968 transitions. [2021-11-02 22:49:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:49:23,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:23,576 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] [2021-11-02 22:49:23,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:49:23,577 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2015540256, now seen corresponding path program 1 times [2021-11-02 22:49:23,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:23,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560157125] [2021-11-02 22:49:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:23,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:49:23,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:23,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560157125] [2021-11-02 22:49:23,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560157125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:23,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:23,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:49:23,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447906727] [2021-11-02 22:49:23,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:49:23,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:49:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:49:23,695 INFO L87 Difference]: Start difference. First operand 78629 states and 141968 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:27,765 INFO L93 Difference]: Finished difference Result 80095 states and 144302 transitions. [2021-11-02 22:49:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 22:49:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 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 69 [2021-11-02 22:49:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:27,886 INFO L225 Difference]: With dead ends: 80095 [2021-11-02 22:49:27,886 INFO L226 Difference]: Without dead ends: 79911 [2021-11-02 22:49:27,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=766, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:49:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79911 states. [2021-11-02 22:49:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79911 to 78813. [2021-11-02 22:49:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78813 states, 78807 states have (on average 1.805169591533747) internal successors, (142260), 78812 states have internal predecessors, (142260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78813 states to 78813 states and 142260 transitions. [2021-11-02 22:49:31,433 INFO L78 Accepts]: Start accepts. Automaton has 78813 states and 142260 transitions. Word has length 69 [2021-11-02 22:49:31,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:31,433 INFO L470 AbstractCegarLoop]: Abstraction has 78813 states and 142260 transitions. [2021-11-02 22:49:31,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 78813 states and 142260 transitions. [2021-11-02 22:49:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:49:31,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:31,440 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] [2021-11-02 22:49:31,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:49:31,441 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:49:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -837693894, now seen corresponding path program 1 times [2021-11-02 22:49:31,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:31,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245157102] [2021-11-02 22:49:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:31,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:49:31,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:31,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245157102] [2021-11-02 22:49:31,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245157102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:31,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:49:31,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:49:31,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115183171] [2021-11-02 22:49:31,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:49:31,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:49:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:49:31,532 INFO L87 Difference]: Start difference. First operand 78813 states and 142260 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:34,594 INFO L93 Difference]: Finished difference Result 79071 states and 142690 transitions. [2021-11-02 22:49:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:49:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 70 [2021-11-02 22:49:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:34,595 INFO L225 Difference]: With dead ends: 79071 [2021-11-02 22:49:34,595 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:49:34,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:49:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:49:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:49:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:49:34,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2021-11-02 22:49:34,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:34,627 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:49:34,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:34,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:49:34,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:49:34,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:49:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:49:34,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:49:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:49:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:49:34,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:49:34,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 22:49:34,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:49:34,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:34,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,376 WARN L207 SmtUtils]: Spent 8.71 s on a formula simplification. DAG size of input: 1350 DAG size of output: 746 [2021-11-02 22:49:43,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:45,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:49:45,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms