./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL --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 e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:09:33,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:09:33,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:09:33,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:09:33,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:09:33,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:09:33,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:09:33,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:09:33,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:09:33,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:09:33,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:09:33,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:09:33,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:09:33,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:09:33,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:09:33,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:09:33,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:09:33,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:09:33,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:09:33,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:09:33,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:09:33,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:09:33,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:09:33,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:09:33,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:09:33,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:09:33,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:09:33,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:09:33,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:09:33,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:09:33,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:09:33,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:09:33,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:09:33,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:09:33,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:09:33,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:09:33,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:09:33,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:09:33,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:09:33,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:09:33,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:09:33,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:09:33,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:09:33,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:09:33,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:09:33,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:09:33,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:09:33,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:09:33,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:09:33,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:09:33,723 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:09:33,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:09:33,724 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:09:33,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:09:33,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:09:33,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:09:33,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:09:33,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:09:33,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:09:33,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:09:33,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:09:33,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:09:33,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:09:33,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:09:33,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:09:33,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:09:33,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:09:33,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:09:33,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:09:33,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:09:33,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:09:33,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:09:33,731 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:09:33,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:09:33,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:09:33,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:09:33,733 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_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2021-11-19 04:09:33,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:09:34,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:09:34,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:09:34,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:09:34,024 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:09:34,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-11-19 04:09:34,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/data/9a1d154d4/dda738b7adc84bd4bbbfbce2828e01d2/FLAGc6d4162ba [2021-11-19 04:09:34,639 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:09:34,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-11-19 04:09:34,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/data/9a1d154d4/dda738b7adc84bd4bbbfbce2828e01d2/FLAGc6d4162ba [2021-11-19 04:09:35,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/data/9a1d154d4/dda738b7adc84bd4bbbfbce2828e01d2 [2021-11-19 04:09:35,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:09:35,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:09:35,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:09:35,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:09:35,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:09:35,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f94efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35, skipping insertion in model container [2021-11-19 04:09:35,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:09:35,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:09:35,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-11-19 04:09:35,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-11-19 04:09:35,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-11-19 04:09:35,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-11-19 04:09:35,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-11-19 04:09:35,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-11-19 04:09:35,607 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:09:35,617 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:09:35,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-11-19 04:09:35,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-11-19 04:09:35,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-11-19 04:09:35,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-11-19 04:09:35,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-11-19 04:09:35,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-11-19 04:09:35,694 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:09:35,723 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:09:35,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35 WrapperNode [2021-11-19 04:09:35,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:09:35,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:09:35,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:09:35,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:09:35,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,775 INFO L137 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 186 [2021-11-19 04:09:35,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:09:35,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:09:35,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:09:35,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:09:35,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:09:35,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:09:35,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:09:35,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:09:35,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (1/1) ... [2021-11-19 04:09:35,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:09:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:09:35,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:09:35,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:09:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:09:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:09:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:09:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:09:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:09:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:09:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:09:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:09:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:09:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:09:36,097 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:09:36,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:09:36,373 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:09:36,379 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:09:36,380 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-19 04:09:36,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:09:36 BoogieIcfgContainer [2021-11-19 04:09:36,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:09:36,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:09:36,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:09:36,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:09:36,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:09:35" (1/3) ... [2021-11-19 04:09:36,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c329890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:09:36, skipping insertion in model container [2021-11-19 04:09:36,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:35" (2/3) ... [2021-11-19 04:09:36,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c329890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:09:36, skipping insertion in model container [2021-11-19 04:09:36,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:09:36" (3/3) ... [2021-11-19 04:09:36,390 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2021-11-19 04:09:36,396 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:09:36,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-19 04:09:36,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:09:36,451 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 [2021-11-19 04:09:36,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 04:09:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 55 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) [2021-11-19 04:09:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 04:09:36,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:09:36,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 04:09:36,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:09:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:09:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2021-11-19 04:09:36,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:09:36,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713760089] [2021-11-19 04:09:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:36,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:09:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:09:36,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:09:36,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713760089] [2021-11-19 04:09:36,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713760089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:09:36,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:09:36,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:09:36,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559449114] [2021-11-19 04:09:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:09:36,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:09:36,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:09:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:09:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:09:36,735 INFO L87 Difference]: Start difference. First operand has 56 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 55 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:09:36,789 INFO L93 Difference]: Finished difference Result 106 states and 172 transitions. [2021-11-19 04:09:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:09:36,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-19 04:09:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:09:36,801 INFO L225 Difference]: With dead ends: 106 [2021-11-19 04:09:36,801 INFO L226 Difference]: Without dead ends: 50 [2021-11-19 04:09:36,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:09:36,811 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:09:36,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:09:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-19 04:09:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-19 04:09:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-11-19 04:09:36,853 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 6 [2021-11-19 04:09:36,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:09:36,853 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-11-19 04:09:36,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-19 04:09:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:09:36,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:09:36,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:09:36,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:09:36,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:09:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:09:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2021-11-19 04:09:36,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:09:36,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275087774] [2021-11-19 04:09:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:36,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:09:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:09:36,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:09:36,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275087774] [2021-11-19 04:09:36,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275087774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:09:36,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:09:36,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:09:36,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398281903] [2021-11-19 04:09:36,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:09:36,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:09:36,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:09:36,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:09:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:09:36,966 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:09:37,030 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2021-11-19 04:09:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:09:37,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-19 04:09:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:09:37,035 INFO L225 Difference]: With dead ends: 103 [2021-11-19 04:09:37,037 INFO L226 Difference]: Without dead ends: 55 [2021-11-19 04:09:37,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:09:37,040 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:09:37,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 80 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:09:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-19 04:09:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-19 04:09:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 53 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) [2021-11-19 04:09:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-11-19 04:09:37,059 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 7 [2021-11-19 04:09:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:09:37,065 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-11-19 04:09:37,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-11-19 04:09:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 04:09:37,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:09:37,067 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:09:37,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:09:37,068 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:09:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:09:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2021-11-19 04:09:37,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:09:37,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844261711] [2021-11-19 04:09:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:37,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:09:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:09:37,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:09:37,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844261711] [2021-11-19 04:09:37,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844261711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:09:37,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:09:37,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:09:37,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421991152] [2021-11-19 04:09:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:09:37,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:09:37,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:09:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:09:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:09:37,214 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:09:37,315 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2021-11-19 04:09:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:09:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 11 [2021-11-19 04:09:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:09:37,318 INFO L225 Difference]: With dead ends: 87 [2021-11-19 04:09:37,318 INFO L226 Difference]: Without dead ends: 85 [2021-11-19 04:09:37,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:09:37,320 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 129 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:09:37,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 65 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:09:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-19 04:09:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2021-11-19 04:09:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2021-11-19 04:09:37,329 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2021-11-19 04:09:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:09:37,330 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2021-11-19 04:09:37,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-11-19 04:09:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 04:09:37,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:09:37,331 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:09:37,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:09:37,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:09:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:09:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1236050174, now seen corresponding path program 1 times [2021-11-19 04:09:37,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:09:37,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650366606] [2021-11-19 04:09:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:37,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:09:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:09:37,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:09:37,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650366606] [2021-11-19 04:09:37,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650366606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:09:37,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043476841] [2021-11-19 04:09:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:37,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:09:37,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:09:37,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:09:37,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:09:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:37,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 04:09:37,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:09:37,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:09:37,918 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 04:09:37,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-19 04:09:37,944 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-19 04:09:37,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-19 04:09:37,974 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:09:37,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 04:09:38,092 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:09:38,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2021-11-19 04:09:38,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 76 [2021-11-19 04:09:38,111 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:09:38,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 55 [2021-11-19 04:09:38,546 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:09:38,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-19 04:09:38,565 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:09:38,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-19 04:09:38,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 04:09:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:09:38,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:09:38,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-11-19 04:09:38,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 328 treesize of output 320 [2021-11-19 04:09:38,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1545 treesize of output 1513 [2021-11-19 04:09:39,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 04:09:39,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:09:39,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-19 04:09:39,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578046875] [2021-11-19 04:09:39,069 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 04:09:39,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:09:39,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:09:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:09:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:09:39,071 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:09:39,538 INFO L93 Difference]: Finished difference Result 98 states and 125 transitions. [2021-11-19 04:09:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:09:39,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-19 04:09:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:09:39,540 INFO L225 Difference]: With dead ends: 98 [2021-11-19 04:09:39,541 INFO L226 Difference]: Without dead ends: 96 [2021-11-19 04:09:39,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:09:39,542 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 56 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:09:39,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 315 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:09:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-19 04:09:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-11-19 04:09:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.353846153846154) internal successors, (88), 69 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) [2021-11-19 04:09:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2021-11-19 04:09:39,553 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 21 [2021-11-19 04:09:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:09:39,554 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2021-11-19 04:09:39,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:09:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2021-11-19 04:09:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:09:39,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:09:39,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:09:39,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-19 04:09:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:09:39,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:09:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:09:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1635781222, now seen corresponding path program 1 times [2021-11-19 04:09:39,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:09:39,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630542101] [2021-11-19 04:09:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:39,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:09:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:09:40,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:09:40,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630542101] [2021-11-19 04:09:40,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630542101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:09:40,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795824717] [2021-11-19 04:09:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:09:40,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:09:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:09:40,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:09:40,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:09:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:09:40,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 04:09:40,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:09:40,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:09:40,197 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 04:09:40,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-19 04:09:40,218 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-19 04:09:40,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-19 04:09:40,236 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:09:40,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 04:09:40,307 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:09:40,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 65 [2021-11-19 04:09:40,313 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:09:40,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 44 [2021-11-19 04:09:40,606 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-19 04:09:40,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 68 [2021-11-19 04:09:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:09:40,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:09:45,236 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:09:45,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 13967 treesize of output 12803 [2021-11-19 04:09:47,870 INFO L354 Elim1Store]: treesize reduction 359, result has 54.0 percent of original size [2021-11-19 04:09:47,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 56 case distinctions, treesize of input 114770 treesize of output 109786 [2021-11-19 04:09:56,788 WARN L227 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 1035 DAG size of output: 1004 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 04:09:56,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:09:56,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90082 treesize of output 90116 [2021-11-19 04:09:59,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 04:09:59,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:09:59,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-19 04:09:59,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916056400] [2021-11-19 04:09:59,016 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 04:09:59,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:09:59,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:09:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:09:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=193, Unknown=2, NotChecked=0, Total=240 [2021-11-19 04:09:59,018 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:10:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:00,835 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2021-11-19 04:10:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:10:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-19 04:10:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:00,838 INFO L225 Difference]: With dead ends: 135 [2021-11-19 04:10:00,839 INFO L226 Difference]: Without dead ends: 97 [2021-11-19 04:10:00,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=72, Invalid=345, Unknown=3, NotChecked=0, Total=420 [2021-11-19 04:10:00,840 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 66 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:00,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 261 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:10:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-19 04:10:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2021-11-19 04:10:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 73 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) [2021-11-19 04:10:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-19 04:10:00,851 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 24 [2021-11-19 04:10:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:00,851 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-19 04:10:00,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:10:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-19 04:10:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:10:00,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:00,853 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:00,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:10:01,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:10:01,075 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:10:01,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash 826434596, now seen corresponding path program 1 times [2021-11-19 04:10:01,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:10:01,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649862888] [2021-11-19 04:10:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:01,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:10:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 04:10:01,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:10:01,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649862888] [2021-11-19 04:10:01,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649862888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:01,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:01,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:10:01,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892537142] [2021-11-19 04:10:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:01,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:10:01,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:10:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:10:01,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:10:01,148 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:10:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:01,261 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2021-11-19 04:10:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:10:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-19 04:10:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:01,263 INFO L225 Difference]: With dead ends: 121 [2021-11-19 04:10:01,263 INFO L226 Difference]: Without dead ends: 83 [2021-11-19 04:10:01,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:10:01,265 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:01,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 130 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:10:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-19 04:10:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2021-11-19 04:10:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.323943661971831) internal successors, (94), 75 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:10:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2021-11-19 04:10:01,286 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 24 [2021-11-19 04:10:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:01,287 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2021-11-19 04:10:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:10:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2021-11-19 04:10:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 04:10:01,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:01,294 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:01,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:10:01,294 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 04:10:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1438181591, now seen corresponding path program 1 times [2021-11-19 04:10:01,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:10:01,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711760490] [2021-11-19 04:10:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:01,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:10:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:01,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:10:01,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711760490] [2021-11-19 04:10:01,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711760490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:10:01,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818613449] [2021-11-19 04:10:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:01,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:10:01,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:10:01,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:10:01,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef6bea2-13e7-4454-b27e-6a2a99c4e283/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:10:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:01,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-19 04:10:01,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:01,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:10:01,789 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 04:10:01,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-19 04:10:01,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-19 04:10:01,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-19 04:10:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:10:01,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-19 04:10:01,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 04:10:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:10:01,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-19 04:10:02,116 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-11-19 04:10:02,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 196 treesize of output 125 [2021-11-19 04:10:02,151 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-19 04:10:02,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 160 treesize of output 130 [2021-11-19 04:10:02,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2021-11-19 04:10:02,173 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-11-19 04:10:02,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 85 [2021-11-19 04:10:02,188 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-19 04:10:02,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 84 [2021-11-19 04:10:02,338 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-11-19 04:10:02,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 114 [2021-11-19 04:10:02,352 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-11-19 04:10:02,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 151 [2021-11-19 04:10:02,387 INFO L354 Elim1Store]: treesize reduction 226, result has 13.1 percent of original size [2021-11-19 04:10:02,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 114 [2021-11-19 04:10:02,793 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-19 04:10:02,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 85 [2021-11-19 04:10:02,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:10:02,809 INFO L354 Elim1Store]: treesize reduction 35, result has 7.9 percent of original size [2021-11-19 04:10:02,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 49 [2021-11-19 04:10:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:02,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:04,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4270 treesize of output 4106 [2021-11-19 04:10:16,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1691553577 treesize of output 1686572841