./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac65b92526cdafd793de45207c8e0f67883c86dc6af3548ef3333097912e0ee4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:57:25,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:57:25,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:57:25,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:57:25,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:57:25,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:57:25,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:57:25,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:57:25,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:57:25,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:57:25,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:57:25,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:57:25,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:57:25,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:57:25,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:57:25,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:57:25,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:57:25,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:57:25,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:57:25,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:57:25,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:57:25,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:57:25,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:57:25,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:57:25,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:57:25,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:57:25,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:57:25,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:57:25,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:57:25,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:57:25,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:57:25,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:57:25,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:57:25,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:57:25,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:57:25,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:57:25,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:57:25,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:57:25,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:57:25,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:57:25,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:57:25,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:57:25,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:57:25,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:57:25,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:57:25,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:57:25,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:57:25,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:57:25,866 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:57:25,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:57:25,867 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:57:25,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:57:25,867 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:57:25,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:57:25,868 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:57:25,868 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:57:25,868 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:57:25,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:57:25,869 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:57:25,869 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:57:25,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:57:25,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:57:25,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:57:25,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:57:25,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:57:25,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:57:25,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:57:25,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:57:25,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:57:25,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:57:25,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:57:25,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:57:25,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:57:25,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:57:25,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:57:25,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:57:25,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:57:25,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:57:25,874 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:57:25,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:57:25,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:57:25,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:57:25,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:57:25,875 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac65b92526cdafd793de45207c8e0f67883c86dc6af3548ef3333097912e0ee4 [2021-11-21 01:57:26,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:57:26,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:57:26,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:57:26,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:57:26,195 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:57:26,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-21 01:57:26,278 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/data/eaaf0f353/576ecb205b5e40bca472b4dd921a3091/FLAGdeb40add2 [2021-11-21 01:57:27,074 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:57:27,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-21 01:57:27,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/data/eaaf0f353/576ecb205b5e40bca472b4dd921a3091/FLAGdeb40add2 [2021-11-21 01:57:27,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/data/eaaf0f353/576ecb205b5e40bca472b4dd921a3091 [2021-11-21 01:57:27,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:57:27,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:57:27,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:57:27,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:57:27,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:57:27,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:27" (1/1) ... [2021-11-21 01:57:27,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:27, skipping insertion in model container [2021-11-21 01:57:27,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:27" (1/1) ... [2021-11-21 01:57:27,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:57:27,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:57:28,231 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13606,13619] [2021-11-21 01:57:28,285 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19227,19240] [2021-11-21 01:57:28,293 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20416,20429] [2021-11-21 01:57:28,318 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22562,22575] [2021-11-21 01:57:28,337 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25842,25855] [2021-11-21 01:57:28,373 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32130,32143] [2021-11-21 01:57:29,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:57:29,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:57:29,150 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13606,13619] [2021-11-21 01:57:29,183 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19227,19240] [2021-11-21 01:57:29,189 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20416,20429] [2021-11-21 01:57:29,198 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22562,22575] [2021-11-21 01:57:29,213 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25842,25855] [2021-11-21 01:57:29,238 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_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32130,32143] [2021-11-21 01:57:29,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:57:29,707 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:57:29,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29 WrapperNode [2021-11-21 01:57:29,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:57:29,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:57:29,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:57:29,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:57:29,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:29,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,000 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8789 [2021-11-21 01:57:30,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:57:30,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:57:30,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:57:30,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:57:30,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:57:30,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:57:30,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:57:30,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:57:30,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (1/1) ... [2021-11-21 01:57:30,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:57:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:30,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:57:30,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16ea2ac-c2b2-4e3c-8633-3c29c4bcec5c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:57:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:57:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:57:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:57:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:57:30,733 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:57:30,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:57:34,481 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:57:34,944 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:57:34,944 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:57:34,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:34 BoogieIcfgContainer [2021-11-21 01:57:34,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:57:34,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:57:34,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:57:34,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:57:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:57:27" (1/3) ... [2021-11-21 01:57:34,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab28493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:34, skipping insertion in model container [2021-11-21 01:57:34,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:29" (2/3) ... [2021-11-21 01:57:34,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab28493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:34, skipping insertion in model container [2021-11-21 01:57:34,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:34" (3/3) ... [2021-11-21 01:57:34,960 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-21 01:57:34,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:57:34,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-21 01:57:35,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:57:35,031 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=FINITE_AUTOMATA, 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 [2021-11-21 01:57:35,031 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-21 01:57:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 1698 states, 1691 states have (on average 1.801892371377883) internal successors, (3047), 1697 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-21 01:57:35,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:35,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:35,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2058921044, now seen corresponding path program 1 times [2021-11-21 01:57:35,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:35,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798145763] [2021-11-21 01:57:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:35,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:35,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:35,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798145763] [2021-11-21 01:57:35,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798145763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:35,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:35,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:57:35,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847862421] [2021-11-21 01:57:35,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:35,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:57:35,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:57:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:35,789 INFO L87 Difference]: Start difference. First operand has 1698 states, 1691 states have (on average 1.801892371377883) internal successors, (3047), 1697 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:36,457 INFO L93 Difference]: Finished difference Result 2373 states and 4179 transitions. [2021-11-21 01:57:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:57:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-21 01:57:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:36,501 INFO L225 Difference]: With dead ends: 2373 [2021-11-21 01:57:36,501 INFO L226 Difference]: Without dead ends: 2222 [2021-11-21 01:57:36,509 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 [2021-11-21 01:57:36,517 INFO L933 BasicCegarLoop]: 3521 mSDtfsCounter, 1811 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:36,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 5436 Invalid, 217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:57:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-11-21 01:57:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2212. [2021-11-21 01:57:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2206 states have (on average 1.2892112420670898) internal successors, (2844), 2211 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2844 transitions. [2021-11-21 01:57:36,715 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2844 transitions. Word has length 74 [2021-11-21 01:57:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:36,716 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2844 transitions. [2021-11-21 01:57:36,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2844 transitions. [2021-11-21 01:57:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-21 01:57:36,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:36,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:57:36,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:36,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1495234726, now seen corresponding path program 1 times [2021-11-21 01:57:36,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:36,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560934487] [2021-11-21 01:57:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:36,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:36,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:36,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560934487] [2021-11-21 01:57:36,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560934487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:36,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:36,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:57:36,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205392968] [2021-11-21 01:57:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:36,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:57:36,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:57:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:36,898 INFO L87 Difference]: Start difference. First operand 2212 states and 2844 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:37,149 INFO L93 Difference]: Finished difference Result 2969 states and 3926 transitions. [2021-11-21 01:57:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:57:37,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-21 01:57:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:37,178 INFO L225 Difference]: With dead ends: 2969 [2021-11-21 01:57:37,178 INFO L226 Difference]: Without dead ends: 2602 [2021-11-21 01:57:37,181 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 [2021-11-21 01:57:37,182 INFO L933 BasicCegarLoop]: 2229 mSDtfsCounter, 1124 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:37,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 3553 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:57:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-21 01:57:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2592. [2021-11-21 01:57:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2586 states have (on average 1.3093580819798918) internal successors, (3386), 2591 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3386 transitions. [2021-11-21 01:57:37,350 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3386 transitions. Word has length 74 [2021-11-21 01:57:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:37,351 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 3386 transitions. [2021-11-21 01:57:37,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3386 transitions. [2021-11-21 01:57:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-21 01:57:37,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:37,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:37,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:57:37,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 209016782, now seen corresponding path program 1 times [2021-11-21 01:57:37,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:37,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835837229] [2021-11-21 01:57:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:37,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:37,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:37,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835837229] [2021-11-21 01:57:37,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835837229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:37,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:37,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:37,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887696936] [2021-11-21 01:57:37,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:37,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:37,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:37,511 INFO L87 Difference]: Start difference. First operand 2592 states and 3386 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:38,669 INFO L93 Difference]: Finished difference Result 4595 states and 6159 transitions. [2021-11-21 01:57:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:57:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-21 01:57:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:38,684 INFO L225 Difference]: With dead ends: 4595 [2021-11-21 01:57:38,684 INFO L226 Difference]: Without dead ends: 2604 [2021-11-21 01:57:38,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:38,690 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 5321 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:38,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5321 Valid, 1113 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:57:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-11-21 01:57:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2594. [2021-11-21 01:57:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2588 states have (on average 1.3504636785162287) internal successors, (3495), 2593 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3495 transitions. [2021-11-21 01:57:38,808 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3495 transitions. Word has length 74 [2021-11-21 01:57:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:38,808 INFO L470 AbstractCegarLoop]: Abstraction has 2594 states and 3495 transitions. [2021-11-21 01:57:38,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3495 transitions. [2021-11-21 01:57:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:57:38,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:38,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:38,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:57:38,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:38,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2036024049, now seen corresponding path program 1 times [2021-11-21 01:57:38,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:38,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536165505] [2021-11-21 01:57:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:38,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:38,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:38,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536165505] [2021-11-21 01:57:38,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536165505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:38,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:38,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:38,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547169062] [2021-11-21 01:57:38,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:38,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:38,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:38,907 INFO L87 Difference]: Start difference. First operand 2594 states and 3495 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:39,897 INFO L93 Difference]: Finished difference Result 5284 states and 7272 transitions. [2021-11-21 01:57:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:57:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-21 01:57:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:39,916 INFO L225 Difference]: With dead ends: 5284 [2021-11-21 01:57:39,916 INFO L226 Difference]: Without dead ends: 3131 [2021-11-21 01:57:39,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:39,929 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 4177 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:39,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 882 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:57:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2021-11-21 01:57:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3121. [2021-11-21 01:57:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3115 states have (on average 1.3775280898876405) internal successors, (4291), 3120 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4291 transitions. [2021-11-21 01:57:40,183 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4291 transitions. Word has length 75 [2021-11-21 01:57:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:40,184 INFO L470 AbstractCegarLoop]: Abstraction has 3121 states and 4291 transitions. [2021-11-21 01:57:40,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4291 transitions. [2021-11-21 01:57:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-21 01:57:40,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:40,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:57:40,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -673249547, now seen corresponding path program 1 times [2021-11-21 01:57:40,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996103467] [2021-11-21 01:57:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:40,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:40,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:40,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996103467] [2021-11-21 01:57:40,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996103467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:40,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:40,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:57:40,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348339085] [2021-11-21 01:57:40,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:40,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:57:40,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:40,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:57:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:40,287 INFO L87 Difference]: Start difference. First operand 3121 states and 4291 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:40,584 INFO L93 Difference]: Finished difference Result 6531 states and 9108 transitions. [2021-11-21 01:57:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:57:40,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-21 01:57:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:40,614 INFO L225 Difference]: With dead ends: 6531 [2021-11-21 01:57:40,614 INFO L226 Difference]: Without dead ends: 4826 [2021-11-21 01:57:40,619 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 [2021-11-21 01:57:40,621 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1035 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:40,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 2489 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:57:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-11-21 01:57:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4816. [2021-11-21 01:57:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4810 states have (on average 1.376923076923077) internal successors, (6623), 4815 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 6623 transitions. [2021-11-21 01:57:40,918 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 6623 transitions. Word has length 76 [2021-11-21 01:57:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:40,919 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 6623 transitions. [2021-11-21 01:57:40,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 6623 transitions. [2021-11-21 01:57:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-21 01:57:40,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:40,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:40,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:57:40,975 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -560510585, now seen corresponding path program 1 times [2021-11-21 01:57:40,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235999042] [2021-11-21 01:57:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:40,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:41,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:41,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235999042] [2021-11-21 01:57:41,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235999042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:41,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:41,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:57:41,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910434333] [2021-11-21 01:57:41,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:41,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:57:41,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:57:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:41,051 INFO L87 Difference]: Start difference. First operand 4816 states and 6623 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:41,497 INFO L93 Difference]: Finished difference Result 10335 states and 14406 transitions. [2021-11-21 01:57:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:57:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-21 01:57:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:41,544 INFO L225 Difference]: With dead ends: 10335 [2021-11-21 01:57:41,544 INFO L226 Difference]: Without dead ends: 7474 [2021-11-21 01:57:41,552 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 [2021-11-21 01:57:41,552 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1054 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:41,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 2503 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:57:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-11-21 01:57:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 7464. [2021-11-21 01:57:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 7458 states have (on average 1.3765084473049074) internal successors, (10266), 7463 states have internal predecessors, (10266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 10266 transitions. [2021-11-21 01:57:42,022 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 10266 transitions. Word has length 76 [2021-11-21 01:57:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:42,023 INFO L470 AbstractCegarLoop]: Abstraction has 7464 states and 10266 transitions. [2021-11-21 01:57:42,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 10266 transitions. [2021-11-21 01:57:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-21 01:57:42,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:42,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:57:42,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1192523870, now seen corresponding path program 1 times [2021-11-21 01:57:42,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901026031] [2021-11-21 01:57:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:42,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:42,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:42,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901026031] [2021-11-21 01:57:42,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901026031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:42,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:42,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:57:42,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631925956] [2021-11-21 01:57:42,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:42,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:57:42,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:57:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:42,093 INFO L87 Difference]: Start difference. First operand 7464 states and 10266 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:42,686 INFO L93 Difference]: Finished difference Result 17347 states and 24295 transitions. [2021-11-21 01:57:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:57:42,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-21 01:57:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:42,734 INFO L225 Difference]: With dead ends: 17347 [2021-11-21 01:57:42,734 INFO L226 Difference]: Without dead ends: 11666 [2021-11-21 01:57:42,744 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 [2021-11-21 01:57:42,745 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 659 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:42,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 2123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:57:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2021-11-21 01:57:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11656. [2021-11-21 01:57:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 11650 states have (on average 1.3851502145922747) internal successors, (16137), 11655 states have internal predecessors, (16137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 16137 transitions. [2021-11-21 01:57:43,429 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 16137 transitions. Word has length 76 [2021-11-21 01:57:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:43,429 INFO L470 AbstractCegarLoop]: Abstraction has 11656 states and 16137 transitions. [2021-11-21 01:57:43,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:43,430 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 16137 transitions. [2021-11-21 01:57:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-21 01:57:43,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:43,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:43,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:57:43,442 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash -533704172, now seen corresponding path program 1 times [2021-11-21 01:57:43,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551155511] [2021-11-21 01:57:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:43,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:43,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:43,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551155511] [2021-11-21 01:57:43,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551155511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:43,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:43,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:43,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197534020] [2021-11-21 01:57:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:43,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:43,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:43,527 INFO L87 Difference]: Start difference. First operand 11656 states and 16137 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:45,186 INFO L93 Difference]: Finished difference Result 28441 states and 39755 transitions. [2021-11-21 01:57:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:57:45,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-21 01:57:45,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:45,233 INFO L225 Difference]: With dead ends: 28441 [2021-11-21 01:57:45,233 INFO L226 Difference]: Without dead ends: 17750 [2021-11-21 01:57:45,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:45,251 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 3577 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:45,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3577 Valid, 747 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:57:45,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2021-11-21 01:57:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 17740. [2021-11-21 01:57:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17740 states, 17734 states have (on average 1.3898725611819105) internal successors, (24648), 17739 states have internal predecessors, (24648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17740 states to 17740 states and 24648 transitions. [2021-11-21 01:57:46,525 INFO L78 Accepts]: Start accepts. Automaton has 17740 states and 24648 transitions. Word has length 76 [2021-11-21 01:57:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:46,525 INFO L470 AbstractCegarLoop]: Abstraction has 17740 states and 24648 transitions. [2021-11-21 01:57:46,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 17740 states and 24648 transitions. [2021-11-21 01:57:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 01:57:46,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:46,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:46,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:57:46,539 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1266054146, now seen corresponding path program 1 times [2021-11-21 01:57:46,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:46,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243774802] [2021-11-21 01:57:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:46,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:46,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243774802] [2021-11-21 01:57:46,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243774802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:46,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:46,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:57:46,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918775541] [2021-11-21 01:57:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:46,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:57:46,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:57:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:46,656 INFO L87 Difference]: Start difference. First operand 17740 states and 24648 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:51,505 INFO L93 Difference]: Finished difference Result 74952 states and 105534 transitions. [2021-11-21 01:57:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:57:51,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-21 01:57:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:51,728 INFO L225 Difference]: With dead ends: 74952 [2021-11-21 01:57:51,729 INFO L226 Difference]: Without dead ends: 68851 [2021-11-21 01:57:51,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:57:51,759 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 6210 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6210 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:51,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6210 Valid, 1565 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:57:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68851 states. [2021-11-21 01:57:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68851 to 17788. [2021-11-21 01:57:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17788 states, 17782 states have (on average 1.3897199415138906) internal successors, (24712), 17787 states have internal predecessors, (24712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 24712 transitions. [2021-11-21 01:57:53,633 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 24712 transitions. Word has length 77 [2021-11-21 01:57:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:53,634 INFO L470 AbstractCegarLoop]: Abstraction has 17788 states and 24712 transitions. [2021-11-21 01:57:53,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:57:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 24712 transitions. [2021-11-21 01:57:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 01:57:53,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:53,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:53,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:57:53,650 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:57:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash 433382606, now seen corresponding path program 1 times [2021-11-21 01:57:53,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:53,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693190880] [2021-11-21 01:57:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:53,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:53,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693190880] [2021-11-21 01:57:53,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693190880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:53,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:53,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:57:53,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235937322] [2021-11-21 01:57:53,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:57:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:57:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:53,753 INFO L87 Difference]: Start difference. First operand 17788 states and 24712 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:00,042 INFO L93 Difference]: Finished difference Result 77455 states and 108946 transitions. [2021-11-21 01:58:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:58:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-21 01:58:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:00,200 INFO L225 Difference]: With dead ends: 77455 [2021-11-21 01:58:00,200 INFO L226 Difference]: Without dead ends: 71091 [2021-11-21 01:58:00,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:58:00,224 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 5741 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5741 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:00,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5741 Valid, 1546 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:58:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71091 states. [2021-11-21 01:58:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71091 to 17968. [2021-11-21 01:58:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17968 states, 17962 states have (on average 1.389154882529785) internal successors, (24952), 17967 states have internal predecessors, (24952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17968 states to 17968 states and 24952 transitions. [2021-11-21 01:58:02,709 INFO L78 Accepts]: Start accepts. Automaton has 17968 states and 24952 transitions. Word has length 77 [2021-11-21 01:58:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:02,710 INFO L470 AbstractCegarLoop]: Abstraction has 17968 states and 24952 transitions. [2021-11-21 01:58:02,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 17968 states and 24952 transitions. [2021-11-21 01:58:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 01:58:02,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:02,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:02,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:58:02,723 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:58:02,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash -421429613, now seen corresponding path program 1 times [2021-11-21 01:58:02,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435602644] [2021-11-21 01:58:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:02,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:02,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:02,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435602644] [2021-11-21 01:58:02,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435602644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:02,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:02,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:58:02,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554140101] [2021-11-21 01:58:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:02,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:58:02,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:58:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:58:02,844 INFO L87 Difference]: Start difference. First operand 17968 states and 24952 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:10,451 INFO L93 Difference]: Finished difference Result 70697 states and 99332 transitions. [2021-11-21 01:58:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:58:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-21 01:58:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:10,612 INFO L225 Difference]: With dead ends: 70697 [2021-11-21 01:58:10,612 INFO L226 Difference]: Without dead ends: 64619 [2021-11-21 01:58:10,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:58:10,637 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 5448 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5448 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:10,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5448 Valid, 1528 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:58:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64619 states. [2021-11-21 01:58:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64619 to 18268. [2021-11-21 01:58:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18268 states, 18262 states have (on average 1.388456905048735) internal successors, (25356), 18267 states have internal predecessors, (25356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18268 states to 18268 states and 25356 transitions. [2021-11-21 01:58:13,149 INFO L78 Accepts]: Start accepts. Automaton has 18268 states and 25356 transitions. Word has length 77 [2021-11-21 01:58:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:13,150 INFO L470 AbstractCegarLoop]: Abstraction has 18268 states and 25356 transitions. [2021-11-21 01:58:13,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 18268 states and 25356 transitions. [2021-11-21 01:58:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-21 01:58:13,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:13,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:13,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:58:13,167 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:58:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -527964228, now seen corresponding path program 1 times [2021-11-21 01:58:13,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:13,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259922728] [2021-11-21 01:58:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:13,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:13,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:13,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259922728] [2021-11-21 01:58:13,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259922728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:13,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:13,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:58:13,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234803708] [2021-11-21 01:58:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:13,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:58:13,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:58:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:58:13,283 INFO L87 Difference]: Start difference. First operand 18268 states and 25356 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:16,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:16,778 INFO L93 Difference]: Finished difference Result 29278 states and 40973 transitions. [2021-11-21 01:58:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:58:16,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-21 01:58:16,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:16,830 INFO L225 Difference]: With dead ends: 29278 [2021-11-21 01:58:16,830 INFO L226 Difference]: Without dead ends: 29276 [2021-11-21 01:58:16,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:58:16,839 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 98 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:16,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 3411 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:58:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29276 states. [2021-11-21 01:58:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29276 to 18266. [2021-11-21 01:58:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18266 states, 18261 states have (on average 1.3865067630469305) internal successors, (25319), 18265 states have internal predecessors, (25319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18266 states to 18266 states and 25319 transitions. [2021-11-21 01:58:19,086 INFO L78 Accepts]: Start accepts. Automaton has 18266 states and 25319 transitions. Word has length 78 [2021-11-21 01:58:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:19,087 INFO L470 AbstractCegarLoop]: Abstraction has 18266 states and 25319 transitions. [2021-11-21 01:58:19,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 18266 states and 25319 transitions. [2021-11-21 01:58:19,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-21 01:58:19,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:19,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:19,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:58:19,102 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:58:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1000233041, now seen corresponding path program 1 times [2021-11-21 01:58:19,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:19,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165597993] [2021-11-21 01:58:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:19,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:19,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:19,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165597993] [2021-11-21 01:58:19,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165597993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:19,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:19,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:58:19,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4571054] [2021-11-21 01:58:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:19,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:58:19,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:58:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:58:19,200 INFO L87 Difference]: Start difference. First operand 18266 states and 25319 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:22,278 INFO L93 Difference]: Finished difference Result 29276 states and 40936 transitions. [2021-11-21 01:58:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:58:22,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-21 01:58:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:22,320 INFO L225 Difference]: With dead ends: 29276 [2021-11-21 01:58:22,320 INFO L226 Difference]: Without dead ends: 29274 [2021-11-21 01:58:22,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:58:22,329 INFO L933 BasicCegarLoop]: 1166 mSDtfsCounter, 98 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:22,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 3405 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:58:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29274 states. [2021-11-21 01:58:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29274 to 18264. [2021-11-21 01:58:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18264 states, 18260 states have (on average 1.3845564074479737) internal successors, (25282), 18263 states have internal predecessors, (25282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18264 states to 18264 states and 25282 transitions. [2021-11-21 01:58:24,151 INFO L78 Accepts]: Start accepts. Automaton has 18264 states and 25282 transitions. Word has length 78 [2021-11-21 01:58:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:24,151 INFO L470 AbstractCegarLoop]: Abstraction has 18264 states and 25282 transitions. [2021-11-21 01:58:24,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:58:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 18264 states and 25282 transitions. [2021-11-21 01:58:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-21 01:58:24,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:24,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:24,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:58:24,164 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-21 01:58:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -559253753, now seen corresponding path program 1 times [2021-11-21 01:58:24,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211153290] [2021-11-21 01:58:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:24,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:24,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:24,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211153290] [2021-11-21 01:58:24,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211153290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:24,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:24,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:58:24,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851244911] [2021-11-21 01:58:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:24,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:58:24,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:58:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:58:24,247 INFO L87 Difference]: Start difference. First operand 18264 states and 25282 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)