./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product32.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_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/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_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/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_55dc6ba5-17ae-4a41-b261-26832c578a44/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 8b874c7ae88f1b18d69b67ffc194fd453f07c437ad434b3d3b7312d25946d05f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:37:28,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:37:28,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:37:28,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:37:28,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:37:28,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:37:28,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:37:28,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:37:28,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:37:28,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:37:28,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:37:28,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:37:28,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:37:28,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:37:28,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:37:28,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:37:28,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:37:28,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:37:28,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:37:28,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:37:28,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:37:28,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:37:28,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:37:28,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:37:28,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:37:28,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:37:28,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:37:28,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:37:28,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:37:28,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:37:28,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:37:28,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:37:28,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:37:28,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:37:28,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:37:28,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:37:28,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:37:28,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:37:28,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:37:28,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:37:28,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:37:28,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:37:28,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:37:28,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:37:28,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:37:28,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:37:28,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:37:28,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:37:28,856 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:37:28,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:37:28,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:37:28,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:37:28,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:37:28,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:37:28,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:37:28,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:37:28,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:37:28,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:37:28,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:37:28,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:37:28,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:37:28,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:37:28,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:37:28,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:37:28,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:37:28,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:37:28,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:37:28,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:37:28,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:37:28,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:37:28,863 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:37:28,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:37:28,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:37:28,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:37:28,866 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_55dc6ba5-17ae-4a41-b261-26832c578a44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b874c7ae88f1b18d69b67ffc194fd453f07c437ad434b3d3b7312d25946d05f [2021-11-02 22:37:29,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:37:29,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:37:29,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:37:29,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:37:29,307 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:37:29,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2021-11-02 22:37:29,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/data/c627646b2/feb39ff23a104cd486788f24c09dbac5/FLAG55be418ec [2021-11-02 22:37:30,119 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:37:30,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2021-11-02 22:37:30,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/data/c627646b2/feb39ff23a104cd486788f24c09dbac5/FLAG55be418ec [2021-11-02 22:37:30,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/data/c627646b2/feb39ff23a104cd486788f24c09dbac5 [2021-11-02 22:37:30,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:37:30,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:37:30,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:37:30,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:37:30,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:37:30,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:37:30" (1/1) ... [2021-11-02 22:37:30,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c80bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:30, skipping insertion in model container [2021-11-02 22:37:30,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:37:30" (1/1) ... [2021-11-02 22:37:30,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:37:30,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:37:31,139 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_55dc6ba5-17ae-4a41-b261-26832c578a44/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45976,45989] [2021-11-02 22:37:31,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:37:31,292 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:37:31,366 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_55dc6ba5-17ae-4a41-b261-26832c578a44/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45976,45989] [2021-11-02 22:37:31,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:37:31,449 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:37:31,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31 WrapperNode [2021-11-02 22:37:31,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:37:31,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:37:31,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:37:31,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:37:31,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:37:31,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:37:31,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:37:31,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:37:31,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:37:31,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:37:31,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:37:31,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:37:31,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (1/1) ... [2021-11-02 22:37:31,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:37:31,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:31,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:37:31,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:37:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-02 22:37:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:37:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:37:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:37:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:37:36,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:37:36,032 INFO L299 CfgBuilder]: Removed 693 assume(true) statements. [2021-11-02 22:37:36,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:37:36 BoogieIcfgContainer [2021-11-02 22:37:36,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:37:36,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:37:36,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:37:36,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:37:36,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:37:30" (1/3) ... [2021-11-02 22:37:36,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5fa1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:37:36, skipping insertion in model container [2021-11-02 22:37:36,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:31" (2/3) ... [2021-11-02 22:37:36,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5fa1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:37:36, skipping insertion in model container [2021-11-02 22:37:36,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:37:36" (3/3) ... [2021-11-02 22:37:36,048 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product32.cil.c [2021-11-02 22:37:36,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:37:36,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:37:36,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:37:36,135 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 22:37:36,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:37:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 1068 states, 1061 states have (on average 1.7492931196983978) internal successors, (1856), 1067 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states 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 22:37:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 22:37:36,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:36,219 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 22:37:36,220 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 22:37:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1125206193, now seen corresponding path program 1 times [2021-11-02 22:37:36,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:36,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880507591] [2021-11-02 22:37:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:36,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:36,828 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 22:37:36,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:36,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880507591] [2021-11-02 22:37:36,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880507591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:36,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:36,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:36,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092464844] [2021-11-02 22:37:36,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:36,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:36,865 INFO L87 Difference]: Start difference. First operand has 1068 states, 1061 states have (on average 1.7492931196983978) internal successors, (1856), 1067 states have internal predecessors, (1856), 0 states have call successors, (0), 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 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 22:37:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:37,136 INFO L93 Difference]: Finished difference Result 3169 states and 5510 transitions. [2021-11-02 22:37:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:37,138 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 22:37:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:37,183 INFO L225 Difference]: With dead ends: 3169 [2021-11-02 22:37:37,184 INFO L226 Difference]: Without dead ends: 2080 [2021-11-02 22:37:37,197 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 22:37:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-02 22:37:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1049. [2021-11-02 22:37:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1043 states have (on average 1.738255033557047) internal successors, (1813), 1048 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states 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 22:37:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1813 transitions. [2021-11-02 22:37:37,374 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1813 transitions. Word has length 65 [2021-11-02 22:37:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:37,376 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1813 transitions. [2021-11-02 22:37:37,377 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 22:37:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1813 transitions. [2021-11-02 22:37:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:37:37,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:37,390 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 22:37:37,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:37:37,391 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 22:37:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash -857686479, now seen corresponding path program 1 times [2021-11-02 22:37:37,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:37,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861726385] [2021-11-02 22:37:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:37,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:37,715 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 22:37:37,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:37,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861726385] [2021-11-02 22:37:37,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861726385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:37,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:37,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:37:37,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962234196] [2021-11-02 22:37:37,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:37:37,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:37:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:37:37,727 INFO L87 Difference]: Start difference. First operand 1049 states and 1813 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 22:37:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:38,087 INFO L93 Difference]: Finished difference Result 3096 states and 5355 transitions. [2021-11-02 22:37:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:37:38,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 22:37:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:38,105 INFO L225 Difference]: With dead ends: 3096 [2021-11-02 22:37:38,105 INFO L226 Difference]: Without dead ends: 2066 [2021-11-02 22:37:38,109 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 22:37:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-11-02 22:37:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1049. [2021-11-02 22:37:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1043 states have (on average 1.7372962607861937) internal successors, (1812), 1048 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 22:37:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1812 transitions. [2021-11-02 22:37:38,182 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1812 transitions. Word has length 67 [2021-11-02 22:37:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:38,182 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1812 transitions. [2021-11-02 22:37:38,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 22:37:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1812 transitions. [2021-11-02 22:37:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:37:38,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:38,185 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 22:37:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:37:38,186 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 22:37:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1225845700, now seen corresponding path program 1 times [2021-11-02 22:37:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:38,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198514626] [2021-11-02 22:37:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:38,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:38,319 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 22:37:38,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:38,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198514626] [2021-11-02 22:37:38,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198514626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:38,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:38,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:38,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237283440] [2021-11-02 22:37:38,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:38,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:38,324 INFO L87 Difference]: Start difference. First operand 1049 states and 1812 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 22:37:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:38,429 INFO L93 Difference]: Finished difference Result 2080 states and 3598 transitions. [2021-11-02 22:37:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:38,430 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 22:37:38,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:38,439 INFO L225 Difference]: With dead ends: 2080 [2021-11-02 22:37:38,440 INFO L226 Difference]: Without dead ends: 1054 [2021-11-02 22:37:38,442 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 22:37:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-11-02 22:37:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1049. [2021-11-02 22:37:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1043 states have (on average 1.7344199424736337) internal successors, (1809), 1048 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states 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 22:37:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1809 transitions. [2021-11-02 22:37:38,516 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1809 transitions. Word has length 68 [2021-11-02 22:37:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:38,518 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1809 transitions. [2021-11-02 22:37:38,518 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 22:37:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1809 transitions. [2021-11-02 22:37:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:37:38,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:38,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:38,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:37:38,524 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 22:37:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1646629513, now seen corresponding path program 1 times [2021-11-02 22:37:38,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:38,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634652150] [2021-11-02 22:37:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:38,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:38,706 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 22:37:38,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:38,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634652150] [2021-11-02 22:37:38,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634652150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:38,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:38,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:37:38,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781505286] [2021-11-02 22:37:38,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:37:38,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:37:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:37:38,710 INFO L87 Difference]: Start difference. First operand 1049 states and 1809 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 22:37:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:39,075 INFO L93 Difference]: Finished difference Result 3086 states and 5335 transitions. [2021-11-02 22:37:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:37:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 22:37:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:39,093 INFO L225 Difference]: With dead ends: 3086 [2021-11-02 22:37:39,093 INFO L226 Difference]: Without dead ends: 2064 [2021-11-02 22:37:39,095 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 22:37:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2021-11-02 22:37:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1049. [2021-11-02 22:37:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1043 states have (on average 1.7334611697027804) internal successors, (1808), 1048 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 22:37:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1808 transitions. [2021-11-02 22:37:39,195 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1808 transitions. Word has length 70 [2021-11-02 22:37:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:39,196 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1808 transitions. [2021-11-02 22:37:39,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 22:37:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1808 transitions. [2021-11-02 22:37:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 22:37:39,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:39,199 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:39,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:37:39,200 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 22:37:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2039075590, now seen corresponding path program 1 times [2021-11-02 22:37:39,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:39,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764382384] [2021-11-02 22:37:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:39,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:39,329 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 22:37:39,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:39,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764382384] [2021-11-02 22:37:39,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764382384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:39,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:39,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:37:39,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115139452] [2021-11-02 22:37:39,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:37:39,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:39,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:37:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:37:39,333 INFO L87 Difference]: Start difference. First operand 1049 states and 1808 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:37:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:39,784 INFO L93 Difference]: Finished difference Result 3091 states and 5339 transitions. [2021-11-02 22:37:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:37:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-02 22:37:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:39,801 INFO L225 Difference]: With dead ends: 3091 [2021-11-02 22:37:39,802 INFO L226 Difference]: Without dead ends: 2069 [2021-11-02 22:37:39,807 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 22:37:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-11-02 22:37:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1049. [2021-11-02 22:37:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1043 states have (on average 1.732502396931927) internal successors, (1807), 1048 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 22:37:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1807 transitions. [2021-11-02 22:37:39,972 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1807 transitions. Word has length 71 [2021-11-02 22:37:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:39,973 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1807 transitions. [2021-11-02 22:37:39,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:37:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1807 transitions. [2021-11-02 22:37:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:37:39,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:39,976 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:39,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:37:39,976 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 22:37:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1603979538, now seen corresponding path program 1 times [2021-11-02 22:37:39,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:39,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849502455] [2021-11-02 22:37:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:39,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:40,145 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 22:37:40,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:40,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849502455] [2021-11-02 22:37:40,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849502455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:40,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:40,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:40,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178259769] [2021-11-02 22:37:40,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:40,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:40,149 INFO L87 Difference]: Start difference. First operand 1049 states and 1807 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:40,242 INFO L93 Difference]: Finished difference Result 1817 states and 3108 transitions. [2021-11-02 22:37:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 22:37:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:40,258 INFO L225 Difference]: With dead ends: 1817 [2021-11-02 22:37:40,259 INFO L226 Difference]: Without dead ends: 1052 [2021-11-02 22:37:40,261 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 22:37:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-11-02 22:37:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1051. [2021-11-02 22:37:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1045 states have (on average 1.7311004784688995) internal successors, (1809), 1050 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states 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 22:37:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1809 transitions. [2021-11-02 22:37:40,350 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1809 transitions. Word has length 72 [2021-11-02 22:37:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:40,351 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1809 transitions. [2021-11-02 22:37:40,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1809 transitions. [2021-11-02 22:37:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:37:40,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:40,361 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:40,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:37:40,362 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 22:37:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash -94904896, now seen corresponding path program 1 times [2021-11-02 22:37:40,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:40,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625959206] [2021-11-02 22:37:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:40,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:40,459 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 22:37:40,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:40,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625959206] [2021-11-02 22:37:40,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625959206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:40,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:40,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:40,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156343726] [2021-11-02 22:37:40,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:40,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:40,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:40,463 INFO L87 Difference]: Start difference. First operand 1051 states and 1809 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 22:37:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:40,635 INFO L93 Difference]: Finished difference Result 3039 states and 5251 transitions. [2021-11-02 22:37:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-02 22:37:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:40,651 INFO L225 Difference]: With dead ends: 3039 [2021-11-02 22:37:40,652 INFO L226 Difference]: Without dead ends: 2019 [2021-11-02 22:37:40,655 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 22:37:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2021-11-02 22:37:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1254. [2021-11-02 22:37:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1248 states have (on average 1.75) internal successors, (2184), 1253 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 22:37:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 2184 transitions. [2021-11-02 22:37:40,760 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 2184 transitions. Word has length 80 [2021-11-02 22:37:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:40,761 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 2184 transitions. [2021-11-02 22:37:40,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 22:37:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 2184 transitions. [2021-11-02 22:37:40,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 22:37:40,764 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:40,765 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:40,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:37:40,765 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 22:37:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 943791041, now seen corresponding path program 1 times [2021-11-02 22:37:40,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:40,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459112281] [2021-11-02 22:37:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:40,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:40,869 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 22:37:40,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:40,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459112281] [2021-11-02 22:37:40,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459112281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:40,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:40,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:37:40,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868802578] [2021-11-02 22:37:40,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:37:40,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:40,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:37:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:37:40,873 INFO L87 Difference]: Start difference. First operand 1254 states and 2184 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 22:37:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:41,400 INFO L93 Difference]: Finished difference Result 3692 states and 6458 transitions. [2021-11-02 22:37:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:37:41,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-02 22:37:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:41,415 INFO L225 Difference]: With dead ends: 3692 [2021-11-02 22:37:41,415 INFO L226 Difference]: Without dead ends: 2469 [2021-11-02 22:37:41,417 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 22:37:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-11-02 22:37:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1254. [2021-11-02 22:37:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1248 states have (on average 1.748397435897436) internal successors, (2182), 1253 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states 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 22:37:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 2182 transitions. [2021-11-02 22:37:41,511 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 2182 transitions. Word has length 81 [2021-11-02 22:37:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:41,512 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 2182 transitions. [2021-11-02 22:37:41,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 22:37:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 2182 transitions. [2021-11-02 22:37:41,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:37:41,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:41,515 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:41,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:37:41,515 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 22:37:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1271534902, now seen corresponding path program 1 times [2021-11-02 22:37:41,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:41,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896791848] [2021-11-02 22:37:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:41,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:41,586 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 22:37:41,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:41,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896791848] [2021-11-02 22:37:41,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896791848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:41,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:41,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:41,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379899716] [2021-11-02 22:37:41,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:41,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:41,589 INFO L87 Difference]: Start difference. First operand 1254 states and 2182 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:37:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:41,776 INFO L93 Difference]: Finished difference Result 3690 states and 6450 transitions. [2021-11-02 22:37:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-02 22:37:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:41,795 INFO L225 Difference]: With dead ends: 3690 [2021-11-02 22:37:41,796 INFO L226 Difference]: Without dead ends: 2467 [2021-11-02 22:37:41,799 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 22:37:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2021-11-02 22:37:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 1702. [2021-11-02 22:37:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1696 states have (on average 1.7741745283018868) internal successors, (3009), 1701 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states 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 22:37:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 3009 transitions. [2021-11-02 22:37:41,960 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 3009 transitions. Word has length 82 [2021-11-02 22:37:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:41,961 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 3009 transitions. [2021-11-02 22:37:41,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:37:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 3009 transitions. [2021-11-02 22:37:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:37:41,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:41,965 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:41,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:37:41,966 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 22:37:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1917764844, now seen corresponding path program 1 times [2021-11-02 22:37:41,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:41,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593287159] [2021-11-02 22:37:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:41,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:42,059 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 22:37:42,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:42,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593287159] [2021-11-02 22:37:42,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593287159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:37:42,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098150362] [2021-11-02 22:37:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:42,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:37:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:42,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:37:42,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:37:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:42,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:37:42,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:37:42,872 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 22:37:42,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098150362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:37:42,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:37:42,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:37:42,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326953249] [2021-11-02 22:37:42,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:37:42,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:37:42,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:37:42,875 INFO L87 Difference]: Start difference. First operand 1702 states and 3009 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 22:37:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:43,107 INFO L93 Difference]: Finished difference Result 3494 states and 6081 transitions. [2021-11-02 22:37:43,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:37:43,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 82 [2021-11-02 22:37:43,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:43,128 INFO L225 Difference]: With dead ends: 3494 [2021-11-02 22:37:43,129 INFO L226 Difference]: Without dead ends: 2729 [2021-11-02 22:37:43,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 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 22:37:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-11-02 22:37:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1961. [2021-11-02 22:37:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1955 states have (on average 1.7805626598465474) internal successors, (3481), 1960 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states 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 22:37:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 3481 transitions. [2021-11-02 22:37:43,310 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 3481 transitions. Word has length 82 [2021-11-02 22:37:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:43,310 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 3481 transitions. [2021-11-02 22:37:43,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 22:37:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 3481 transitions. [2021-11-02 22:37:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 22:37:43,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:43,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:43,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:37:43,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55dc6ba5-17ae-4a41-b261-26832c578a44/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:37:43,531 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 22:37:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:43,531 INFO L85 PathProgramCache]: Analyzing trace with hash -462600625, now seen corresponding path program 1 times [2021-11-02 22:37:43,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:43,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359609085] [2021-11-02 22:37:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:43,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:43,652 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 22:37:43,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:43,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359609085] [2021-11-02 22:37:43,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359609085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:43,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:43,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:43,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500787739] [2021-11-02 22:37:43,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:43,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:43,656 INFO L87 Difference]: Start difference. First operand 1961 states and 3481 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 22:37:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:43,909 INFO L93 Difference]: Finished difference Result 5474 states and 9735 transitions. [2021-11-02 22:37:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:43,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-02 22:37:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:43,950 INFO L225 Difference]: With dead ends: 5474 [2021-11-02 22:37:43,959 INFO L226 Difference]: Without dead ends: 3614 [2021-11-02 22:37:43,963 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 22:37:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-11-02 22:37:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 2849. [2021-11-02 22:37:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2843 states have (on average 1.7988040801969751) internal successors, (5114), 2848 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states 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 22:37:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5114 transitions. [2021-11-02 22:37:44,211 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5114 transitions. Word has length 86 [2021-11-02 22:37:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:44,212 INFO L470 AbstractCegarLoop]: Abstraction has 2849 states and 5114 transitions. [2021-11-02 22:37:44,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 22:37:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5114 transitions. [2021-11-02 22:37:44,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:37:44,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:44,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:44,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:37:44,224 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 22:37:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1674598607, now seen corresponding path program 1 times [2021-11-02 22:37:44,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:44,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20471772] [2021-11-02 22:37:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:44,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:44,310 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 22:37:44,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:44,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20471772] [2021-11-02 22:37:44,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20471772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:44,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:44,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:44,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798331450] [2021-11-02 22:37:44,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:44,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:44,315 INFO L87 Difference]: Start difference. First operand 2849 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:37:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:44,697 INFO L93 Difference]: Finished difference Result 7874 states and 14153 transitions. [2021-11-02 22:37:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-02 22:37:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:44,716 INFO L225 Difference]: With dead ends: 7874 [2021-11-02 22:37:44,716 INFO L226 Difference]: Without dead ends: 5160 [2021-11-02 22:37:44,722 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 22:37:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2021-11-02 22:37:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 4395. [2021-11-02 22:37:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4389 states have (on average 1.8124857598541808) internal successors, (7955), 4394 states have internal predecessors, (7955), 0 states have call successors, (0), 0 states 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 22:37:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 7955 transitions. [2021-11-02 22:37:45,068 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 7955 transitions. Word has length 87 [2021-11-02 22:37:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:45,069 INFO L470 AbstractCegarLoop]: Abstraction has 4395 states and 7955 transitions. [2021-11-02 22:37:45,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:37:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 7955 transitions. [2021-11-02 22:37:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:37:45,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:45,081 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:45,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:37:45,082 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 22:37:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash -997839682, now seen corresponding path program 1 times [2021-11-02 22:37:45,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:45,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438150548] [2021-11-02 22:37:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:45,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:45,166 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 22:37:45,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:45,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438150548] [2021-11-02 22:37:45,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438150548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:45,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:45,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:45,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647115147] [2021-11-02 22:37:45,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:45,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:45,170 INFO L87 Difference]: Start difference. First operand 4395 states and 7955 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:37:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:45,618 INFO L93 Difference]: Finished difference Result 12228 states and 22159 transitions. [2021-11-02 22:37:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:45,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 22:37:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:45,643 INFO L225 Difference]: With dead ends: 12228 [2021-11-02 22:37:45,643 INFO L226 Difference]: Without dead ends: 8002 [2021-11-02 22:37:45,651 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 22:37:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-11-02 22:37:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7237. [2021-11-02 22:37:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7237 states, 7231 states have (on average 1.8216014382519707) internal successors, (13172), 7236 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states 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 22:37:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 13172 transitions. [2021-11-02 22:37:46,156 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 13172 transitions. Word has length 88 [2021-11-02 22:37:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:46,157 INFO L470 AbstractCegarLoop]: Abstraction has 7237 states and 13172 transitions. [2021-11-02 22:37:46,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:37:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 13172 transitions. [2021-11-02 22:37:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:37:46,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:46,173 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:46,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:37:46,174 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 22:37:46,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:46,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1023552606, now seen corresponding path program 1 times [2021-11-02 22:37:46,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:46,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317351791] [2021-11-02 22:37:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:46,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:46,260 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 22:37:46,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:46,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317351791] [2021-11-02 22:37:46,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317351791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:46,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:46,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:46,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346190515] [2021-11-02 22:37:46,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:46,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:46,264 INFO L87 Difference]: Start difference. First operand 7237 states and 13172 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:47,079 INFO L93 Difference]: Finished difference Result 21212 states and 38652 transitions. [2021-11-02 22:37:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:47,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 22:37:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:47,133 INFO L225 Difference]: With dead ends: 21212 [2021-11-02 22:37:47,134 INFO L226 Difference]: Without dead ends: 14148 [2021-11-02 22:37:47,146 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 22:37:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14148 states. [2021-11-02 22:37:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14148 to 13383. [2021-11-02 22:37:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13383 states, 13377 states have (on average 1.826792255363684) internal successors, (24437), 13382 states have internal predecessors, (24437), 0 states have call successors, (0), 0 states 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 22:37:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 24437 transitions. [2021-11-02 22:37:48,019 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 24437 transitions. Word has length 89 [2021-11-02 22:37:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:48,019 INFO L470 AbstractCegarLoop]: Abstraction has 13383 states and 24437 transitions. [2021-11-02 22:37:48,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 24437 transitions. [2021-11-02 22:37:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:37:48,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:48,045 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:48,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:37:48,046 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 22:37:48,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1048192721, now seen corresponding path program 1 times [2021-11-02 22:37:48,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:48,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727714196] [2021-11-02 22:37:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:48,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:48,151 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 22:37:48,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:48,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727714196] [2021-11-02 22:37:48,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727714196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:48,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:48,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:48,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997849070] [2021-11-02 22:37:48,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:48,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:48,154 INFO L87 Difference]: Start difference. First operand 13383 states and 24437 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:37:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:49,513 INFO L93 Difference]: Finished difference Result 39352 states and 71922 transitions. [2021-11-02 22:37:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-02 22:37:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:49,628 INFO L225 Difference]: With dead ends: 39352 [2021-11-02 22:37:49,628 INFO L226 Difference]: Without dead ends: 26150 [2021-11-02 22:37:49,656 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 22:37:49,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26150 states. [2021-11-02 22:37:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26150 to 25385. [2021-11-02 22:37:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25385 states, 25379 states have (on average 1.8291500847157098) internal successors, (46422), 25384 states have internal predecessors, (46422), 0 states have call successors, (0), 0 states 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 22:37:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25385 states to 25385 states and 46422 transitions. [2021-11-02 22:37:51,473 INFO L78 Accepts]: Start accepts. Automaton has 25385 states and 46422 transitions. Word has length 90 [2021-11-02 22:37:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:51,473 INFO L470 AbstractCegarLoop]: Abstraction has 25385 states and 46422 transitions. [2021-11-02 22:37:51,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:37:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25385 states and 46422 transitions. [2021-11-02 22:37:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:37:51,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:51,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:51,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:37:51,507 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 22:37:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1382534692, now seen corresponding path program 1 times [2021-11-02 22:37:51,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:51,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572561929] [2021-11-02 22:37:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:51,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:51,591 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 22:37:51,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:51,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572561929] [2021-11-02 22:37:51,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572561929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:51,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:51,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:51,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572422296] [2021-11-02 22:37:51,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:51,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:51,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:51,594 INFO L87 Difference]: Start difference. First operand 25385 states and 46422 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 22:37:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:53,312 INFO L93 Difference]: Finished difference Result 69997 states and 127613 transitions. [2021-11-02 22:37:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-02 22:37:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:53,426 INFO L225 Difference]: With dead ends: 69997 [2021-11-02 22:37:53,426 INFO L226 Difference]: Without dead ends: 44840 [2021-11-02 22:37:53,467 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 22:37:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44840 states. [2021-11-02 22:37:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44840 to 44075. [2021-11-02 22:37:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44075 states, 44069 states have (on average 1.8187614876670675) internal successors, (80151), 44074 states have internal predecessors, (80151), 0 states have call successors, (0), 0 states 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 22:37:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 80151 transitions. [2021-11-02 22:37:56,143 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 80151 transitions. Word has length 91 [2021-11-02 22:37:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:56,143 INFO L470 AbstractCegarLoop]: Abstraction has 44075 states and 80151 transitions. [2021-11-02 22:37:56,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 22:37:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 80151 transitions. [2021-11-02 22:37:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:37:56,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:56,175 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:56,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:37:56,175 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 22:37:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1472425144, now seen corresponding path program 1 times [2021-11-02 22:37:56,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:56,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871122650] [2021-11-02 22:37:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:56,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:56,275 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 22:37:56,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:56,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871122650] [2021-11-02 22:37:56,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871122650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:56,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:56,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:37:56,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279702409] [2021-11-02 22:37:56,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:37:56,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:37:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:37:56,278 INFO L87 Difference]: Start difference. First operand 44075 states and 80151 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:38:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:00,201 INFO L93 Difference]: Finished difference Result 129842 states and 236102 transitions. [2021-11-02 22:38:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:38:00,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 92 [2021-11-02 22:38:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:00,460 INFO L225 Difference]: With dead ends: 129842 [2021-11-02 22:38:00,460 INFO L226 Difference]: Without dead ends: 86063 [2021-11-02 22:38:00,532 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 22:38:00,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86063 states. [2021-11-02 22:38:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86063 to 44075. [2021-11-02 22:38:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44075 states, 44069 states have (on average 1.8129070321541219) internal successors, (79893), 44074 states have internal predecessors, (79893), 0 states have call successors, (0), 0 states 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 22:38:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 79893 transitions. [2021-11-02 22:38:03,122 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 79893 transitions. Word has length 92 [2021-11-02 22:38:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:03,122 INFO L470 AbstractCegarLoop]: Abstraction has 44075 states and 79893 transitions. [2021-11-02 22:38:03,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:38:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 79893 transitions. [2021-11-02 22:38:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:38:03,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:03,156 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:38:03,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:38:03,157 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 22:38:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1716874602, now seen corresponding path program 2 times [2021-11-02 22:38:03,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:03,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502242407] [2021-11-02 22:38:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:03,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:03,260 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 22:38:03,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:03,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502242407] [2021-11-02 22:38:03,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502242407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:38:03,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:38:03,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:38:03,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483032211] [2021-11-02 22:38:03,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:38:03,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:38:03,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:38:03,266 INFO L87 Difference]: Start difference. First operand 44075 states and 79893 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 22:38:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:05,327 INFO L93 Difference]: Finished difference Result 88613 states and 160567 transitions. [2021-11-02 22:38:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:38:05,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-02 22:38:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:05,434 INFO L225 Difference]: With dead ends: 88613 [2021-11-02 22:38:05,434 INFO L226 Difference]: Without dead ends: 44840 [2021-11-02 22:38:05,480 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 22:38:05,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44840 states. [2021-11-02 22:38:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44840 to 44075. [2021-11-02 22:38:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44075 states, 44069 states have (on average 1.8100024960856838) internal successors, (79765), 44074 states have internal predecessors, (79765), 0 states have call successors, (0), 0 states 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 22:38:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 79765 transitions. [2021-11-02 22:38:07,650 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 79765 transitions. Word has length 92 [2021-11-02 22:38:07,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:07,651 INFO L470 AbstractCegarLoop]: Abstraction has 44075 states and 79765 transitions. [2021-11-02 22:38:07,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 22:38:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 79765 transitions. [2021-11-02 22:38:07,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:38:07,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:07,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:38:07,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:38:07,674 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 22:38:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1263709981, now seen corresponding path program 1 times [2021-11-02 22:38:07,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:07,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150766366] [2021-11-02 22:38:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:07,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:07,749 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 22:38:07,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:07,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150766366] [2021-11-02 22:38:07,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150766366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:38:07,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:38:07,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:38:07,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444233333] [2021-11-02 22:38:07,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:38:07,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:38:07,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:38:07,752 INFO L87 Difference]: Start difference. First operand 44075 states and 79765 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 22:38:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:11,056 INFO L93 Difference]: Finished difference Result 123727 states and 223745 transitions. [2021-11-02 22:38:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:38:11,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-02 22:38:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:11,219 INFO L225 Difference]: With dead ends: 123727 [2021-11-02 22:38:11,220 INFO L226 Difference]: Without dead ends: 79914 [2021-11-02 22:38:11,251 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 22:38:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79914 states. [2021-11-02 22:38:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79914 to 79149. [2021-11-02 22:38:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79149 states, 79143 states have (on average 1.8052133479903465) internal successors, (142870), 79148 states have internal predecessors, (142870), 0 states have call successors, (0), 0 states 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 22:38:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79149 states to 79149 states and 142870 transitions. [2021-11-02 22:38:15,274 INFO L78 Accepts]: Start accepts. Automaton has 79149 states and 142870 transitions. Word has length 92 [2021-11-02 22:38:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:15,275 INFO L470 AbstractCegarLoop]: Abstraction has 79149 states and 142870 transitions. [2021-11-02 22:38:15,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 22:38:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 79149 states and 142870 transitions. [2021-11-02 22:38:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 22:38:15,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:15,295 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:38:15,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:38:15,295 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 22:38:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -211032988, now seen corresponding path program 1 times [2021-11-02 22:38:15,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:15,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521571237] [2021-11-02 22:38:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:15,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:15,398 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 22:38:15,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:15,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521571237] [2021-11-02 22:38:15,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521571237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:38:15,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:38:15,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:38:15,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618864491] [2021-11-02 22:38:15,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:38:15,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:38:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:38:15,401 INFO L87 Difference]: Start difference. First operand 79149 states and 142870 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:38:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:22,446 INFO L93 Difference]: Finished difference Result 160878 states and 290080 transitions. [2021-11-02 22:38:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:38:22,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 93 [2021-11-02 22:38:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:22,812 INFO L225 Difference]: With dead ends: 160878 [2021-11-02 22:38:22,812 INFO L226 Difference]: Without dead ends: 160131 [2021-11-02 22:38:22,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:38:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160131 states.