./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad2aa6a134d55c6f9e0680e747fcd11c50dca1f4f191403c757088bda5dc252 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:12:28,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:12:28,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:12:28,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:12:28,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:12:28,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:12:28,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:12:28,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:12:28,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:12:28,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:12:28,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:12:28,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:12:28,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:12:28,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:12:28,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:12:28,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:12:28,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:12:28,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:12:28,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:12:28,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:12:28,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:12:28,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:12:28,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:12:28,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:12:28,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:12:28,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:12:28,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:12:28,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:12:28,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:12:28,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:12:28,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:12:28,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:12:28,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:12:28,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:12:28,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:12:28,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:12:28,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:12:28,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:12:28,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:12:28,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:12:28,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:12:28,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:12:28,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:12:28,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:12:28,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:12:28,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:12:28,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:12:28,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:12:28,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:12:28,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:12:28,922 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:12:28,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:12:28,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:12:28,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:12:28,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:12:28,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:12:28,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:12:28,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:12:28,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:12:28,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:12:28,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:12:28,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:12:28,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:12:28,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:12:28,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:12:28,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:12:28,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:12:28,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:12:28,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:12:28,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:12:28,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad2aa6a134d55c6f9e0680e747fcd11c50dca1f4f191403c757088bda5dc252 [2021-12-14 15:12:29,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:12:29,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:12:29,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:12:29,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:12:29,277 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:12:29,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-14 15:12:29,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6ae3c1b/880ba22baf0f4fe6a99cfebddccb54dd/FLAG046c022b8 [2021-12-14 15:12:30,452 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:12:30,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-14 15:12:30,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6ae3c1b/880ba22baf0f4fe6a99cfebddccb54dd/FLAG046c022b8 [2021-12-14 15:12:30,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6ae3c1b/880ba22baf0f4fe6a99cfebddccb54dd [2021-12-14 15:12:30,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:12:30,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:12:30,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:12:30,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:12:30,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:12:30,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:12:30" (1/1) ... [2021-12-14 15:12:30,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bc0769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:30, skipping insertion in model container [2021-12-14 15:12:30,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:12:30" (1/1) ... [2021-12-14 15:12:30,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:12:31,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:12:31,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32670,32683] [2021-12-14 15:12:31,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39748,39761] [2021-12-14 15:12:32,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66949,66962] [2021-12-14 15:12:32,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[76032,76045] [2021-12-14 15:12:32,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82743,82756] [2021-12-14 15:12:32,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94707,94720] [2021-12-14 15:12:32,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103680,103693] [2021-12-14 15:12:32,312 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111745,111758] [2021-12-14 15:12:32,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[150437,150450] [2021-12-14 15:12:32,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153987,154000] [2021-12-14 15:12:32,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[163014,163027] [2021-12-14 15:12:32,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169687,169700] [2021-12-14 15:12:32,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[195501,195514] [2021-12-14 15:12:32,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[227497,227510] [2021-12-14 15:12:32,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[257825,257838] [2021-12-14 15:12:32,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[288277,288290] [2021-12-14 15:12:32,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[321714,321727] [2021-12-14 15:12:32,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:12:32,929 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:12:32,991 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32670,32683] [2021-12-14 15:12:32,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39748,39761] [2021-12-14 15:12:33,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66949,66962] [2021-12-14 15:12:33,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[76032,76045] [2021-12-14 15:12:33,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82743,82756] [2021-12-14 15:12:33,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94707,94720] [2021-12-14 15:12:33,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103680,103693] [2021-12-14 15:12:33,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111745,111758] [2021-12-14 15:12:33,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[150437,150450] [2021-12-14 15:12:33,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153987,154000] [2021-12-14 15:12:33,129 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[163014,163027] [2021-12-14 15:12:33,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169687,169700] [2021-12-14 15:12:33,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[195501,195514] [2021-12-14 15:12:33,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[227497,227510] [2021-12-14 15:12:33,231 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[257825,257838] [2021-12-14 15:12:33,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[288277,288290] [2021-12-14 15:12:33,312 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[321714,321727] [2021-12-14 15:12:33,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:12:33,474 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:12:33,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33 WrapperNode [2021-12-14 15:12:33,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:12:33,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:12:33,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:12:33,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:12:33,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:33,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,002 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18051 [2021-12-14 15:12:34,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:12:34,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:12:34,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:12:34,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:12:34,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:12:34,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:12:34,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:12:34,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:12:34,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (1/1) ... [2021-12-14 15:12:34,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:12:34,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:12:34,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:12:34,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:12:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:12:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:12:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:12:34,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:12:34,771 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:12:34,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:12:39,861 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:12:39,893 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:12:39,893 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:12:39,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:12:39 BoogieIcfgContainer [2021-12-14 15:12:39,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:12:39,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:12:39,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:12:39,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:12:39,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:12:30" (1/3) ... [2021-12-14 15:12:39,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cceaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:12:39, skipping insertion in model container [2021-12-14 15:12:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:12:33" (2/3) ... [2021-12-14 15:12:39,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cceaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:12:39, skipping insertion in model container [2021-12-14 15:12:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:12:39" (3/3) ... [2021-12-14 15:12:39,905 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-14 15:12:39,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:12:39,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-12-14 15:12:39,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:12:39,974 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:12:39,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-12-14 15:12:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 3732 states, 3714 states have (on average 1.7808292945611202) internal successors, (6614), 3731 states have internal predecessors, (6614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 15:12:40,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:12:40,037 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] [2021-12-14 15:12:40,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:12:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:12:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash -100733711, now seen corresponding path program 1 times [2021-12-14 15:12:40,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:12:40,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856545523] [2021-12-14 15:12:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:12:40,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:12:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:12:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:12:40,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:12:40,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856545523] [2021-12-14 15:12:40,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856545523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:12:40,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:12:40,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:12:40,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914315184] [2021-12-14 15:12:40,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:12:40,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:12:40,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:12:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:12:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:12:40,558 INFO L87 Difference]: Start difference. First operand has 3732 states, 3714 states have (on average 1.7808292945611202) internal successors, (6614), 3731 states have internal predecessors, (6614), 0 states have call successors, (0), 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 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:12:44,626 INFO L93 Difference]: Finished difference Result 7047 states and 12225 transitions. [2021-12-14 15:12:44,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:12:44,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-14 15:12:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:12:44,702 INFO L225 Difference]: With dead ends: 7047 [2021-12-14 15:12:44,703 INFO L226 Difference]: Without dead ends: 4526 [2021-12-14 15:12:44,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:12:44,722 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 20347 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 3550 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20347 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 3550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:12:44,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20347 Valid, 4292 Invalid, 3835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 3550 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-14 15:12:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2021-12-14 15:12:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 4501. [2021-12-14 15:12:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4501 states, 4484 states have (on average 1.300178412132025) internal successors, (5830), 4500 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 5830 transitions. [2021-12-14 15:12:44,936 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 5830 transitions. Word has length 65 [2021-12-14 15:12:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:12:45,034 INFO L470 AbstractCegarLoop]: Abstraction has 4501 states and 5830 transitions. [2021-12-14 15:12:45,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 5830 transitions. [2021-12-14 15:12:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:12:45,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:12:45,041 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] [2021-12-14 15:12:45,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:12:45,042 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:12:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:12:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 100373679, now seen corresponding path program 1 times [2021-12-14 15:12:45,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:12:45,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441276502] [2021-12-14 15:12:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:12:45,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:12:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:12:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:12:45,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:12:45,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441276502] [2021-12-14 15:12:45,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441276502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:12:45,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:12:45,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:12:45,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224453742] [2021-12-14 15:12:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:12:45,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:12:45,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:12:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:12:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:12:45,160 INFO L87 Difference]: Start difference. First operand 4501 states and 5830 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:12:47,321 INFO L93 Difference]: Finished difference Result 8465 states and 10989 transitions. [2021-12-14 15:12:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:12:47,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:12:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:12:47,337 INFO L225 Difference]: With dead ends: 8465 [2021-12-14 15:12:47,337 INFO L226 Difference]: Without dead ends: 5686 [2021-12-14 15:12:47,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:12:47,343 INFO L933 BasicCegarLoop]: 1914 mSDtfsCounter, 13225 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13225 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:12:47,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13225 Valid, 2583 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:12:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-12-14 15:12:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5656. [2021-12-14 15:12:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 5639 states have (on average 1.3060826387657387) internal successors, (7365), 5655 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 7365 transitions. [2021-12-14 15:12:47,493 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 7365 transitions. Word has length 66 [2021-12-14 15:12:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:12:47,493 INFO L470 AbstractCegarLoop]: Abstraction has 5656 states and 7365 transitions. [2021-12-14 15:12:47,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 7365 transitions. [2021-12-14 15:12:47,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:12:47,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:12:47,502 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] [2021-12-14 15:12:47,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:12:47,502 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:12:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:12:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2043501231, now seen corresponding path program 1 times [2021-12-14 15:12:47,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:12:47,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635102324] [2021-12-14 15:12:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:12:47,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:12:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:12:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:12:47,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:12:47,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635102324] [2021-12-14 15:12:47,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635102324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:12:47,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:12:47,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:12:47,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624326728] [2021-12-14 15:12:47,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:12:47,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:12:47,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:12:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:12:47,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:12:47,639 INFO L87 Difference]: Start difference. First operand 5656 states and 7365 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:12:49,749 INFO L93 Difference]: Finished difference Result 11341 states and 14793 transitions. [2021-12-14 15:12:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:12:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:12:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:12:49,795 INFO L225 Difference]: With dead ends: 11341 [2021-12-14 15:12:49,815 INFO L226 Difference]: Without dead ends: 7095 [2021-12-14 15:12:49,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:12:49,841 INFO L933 BasicCegarLoop]: 1612 mSDtfsCounter, 11515 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11515 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:12:49,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11515 Valid, 2246 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:12:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2021-12-14 15:12:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7075. [2021-12-14 15:12:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7075 states, 7058 states have (on average 1.3085860017001985) internal successors, (9236), 7074 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7075 states to 7075 states and 9236 transitions. [2021-12-14 15:12:50,123 INFO L78 Accepts]: Start accepts. Automaton has 7075 states and 9236 transitions. Word has length 66 [2021-12-14 15:12:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:12:50,127 INFO L470 AbstractCegarLoop]: Abstraction has 7075 states and 9236 transitions. [2021-12-14 15:12:50,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7075 states and 9236 transitions. [2021-12-14 15:12:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-14 15:12:50,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:12:50,139 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] [2021-12-14 15:12:50,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:12:50,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:12:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:12:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash 280890183, now seen corresponding path program 1 times [2021-12-14 15:12:50,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:12:50,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405274828] [2021-12-14 15:12:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:12:50,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:12:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:12:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:12:50,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:12:50,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405274828] [2021-12-14 15:12:50,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405274828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:12:50,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:12:50,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:12:50,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905829871] [2021-12-14 15:12:50,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:12:50,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:12:50,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:12:50,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:12:50,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:12:50,338 INFO L87 Difference]: Start difference. First operand 7075 states and 9236 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:12:51,987 INFO L93 Difference]: Finished difference Result 13797 states and 18189 transitions. [2021-12-14 15:12:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:12:51,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-14 15:12:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:12:52,029 INFO L225 Difference]: With dead ends: 13797 [2021-12-14 15:12:52,029 INFO L226 Difference]: Without dead ends: 9215 [2021-12-14 15:12:52,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:12:52,040 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 9693 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9693 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:12:52,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9693 Valid, 2010 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:12:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9215 states. [2021-12-14 15:12:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9215 to 9175. [2021-12-14 15:12:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9175 states, 9158 states have (on average 1.3226687049574142) internal successors, (12113), 9174 states have internal predecessors, (12113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9175 states to 9175 states and 12113 transitions. [2021-12-14 15:12:52,365 INFO L78 Accepts]: Start accepts. Automaton has 9175 states and 12113 transitions. Word has length 67 [2021-12-14 15:12:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:12:52,365 INFO L470 AbstractCegarLoop]: Abstraction has 9175 states and 12113 transitions. [2021-12-14 15:12:52,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9175 states and 12113 transitions. [2021-12-14 15:12:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 15:12:52,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:12:52,372 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] [2021-12-14 15:12:52,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:12:52,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:12:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:12:52,374 INFO L85 PathProgramCache]: Analyzing trace with hash 533009189, now seen corresponding path program 1 times [2021-12-14 15:12:52,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:12:52,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913075861] [2021-12-14 15:12:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:12:52,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:12:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:12:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:12:52,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:12:52,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913075861] [2021-12-14 15:12:52,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913075861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:12:52,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:12:52,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:12:52,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48067090] [2021-12-14 15:12:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:12:52,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:12:52,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:12:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:12:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:12:52,595 INFO L87 Difference]: Start difference. First operand 9175 states and 12113 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:12:55,882 INFO L93 Difference]: Finished difference Result 14418 states and 19726 transitions. [2021-12-14 15:12:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 15:12:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-14 15:12:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:12:55,941 INFO L225 Difference]: With dead ends: 14418 [2021-12-14 15:12:55,941 INFO L226 Difference]: Without dead ends: 12884 [2021-12-14 15:12:55,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:12:55,949 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 11943 mSDsluCounter, 5103 mSDsCounter, 0 mSdLazyCounter, 5317 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11943 SdHoareTripleChecker+Valid, 6636 SdHoareTripleChecker+Invalid, 5408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 5317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:12:55,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11943 Valid, 6636 Invalid, 5408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 5317 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-14 15:12:55,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2021-12-14 15:12:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 9015. [2021-12-14 15:12:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 8998 states have (on average 1.3220715714603246) internal successors, (11896), 9014 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 11896 transitions. [2021-12-14 15:12:56,551 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 11896 transitions. Word has length 68 [2021-12-14 15:12:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:12:56,552 INFO L470 AbstractCegarLoop]: Abstraction has 9015 states and 11896 transitions. [2021-12-14 15:12:56,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:12:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 11896 transitions. [2021-12-14 15:12:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 15:12:56,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:12:56,559 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] [2021-12-14 15:12:56,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:12:56,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:12:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:12:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1802238869, now seen corresponding path program 1 times [2021-12-14 15:12:56,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:12:56,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070675780] [2021-12-14 15:12:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:12:56,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:12:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:12:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:12:56,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:12:56,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070675780] [2021-12-14 15:12:56,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070675780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:12:56,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:12:56,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:12:56,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129133222] [2021-12-14 15:12:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:12:56,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:12:56,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:12:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:12:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:12:56,740 INFO L87 Difference]: Start difference. First operand 9015 states and 11896 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:01,190 INFO L93 Difference]: Finished difference Result 17830 states and 24364 transitions. [2021-12-14 15:13:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:13:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-14 15:13:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:01,218 INFO L225 Difference]: With dead ends: 17830 [2021-12-14 15:13:01,218 INFO L226 Difference]: Without dead ends: 16418 [2021-12-14 15:13:01,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:13:01,227 INFO L933 BasicCegarLoop]: 1566 mSDtfsCounter, 12111 mSDsluCounter, 7029 mSDsCounter, 0 mSdLazyCounter, 8564 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12111 SdHoareTripleChecker+Valid, 8595 SdHoareTripleChecker+Invalid, 8923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 8564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:01,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12111 Valid, 8595 Invalid, 8923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 8564 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-14 15:13:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16418 states. [2021-12-14 15:13:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16418 to 8953. [2021-12-14 15:13:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8953 states, 8936 states have (on average 1.3217323187108325) internal successors, (11811), 8952 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:01,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 11811 transitions. [2021-12-14 15:13:01,640 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 11811 transitions. Word has length 68 [2021-12-14 15:13:01,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:01,641 INFO L470 AbstractCegarLoop]: Abstraction has 8953 states and 11811 transitions. [2021-12-14 15:13:01,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 11811 transitions. [2021-12-14 15:13:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:13:01,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:01,650 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] [2021-12-14 15:13:01,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:13:01,650 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2141707383, now seen corresponding path program 1 times [2021-12-14 15:13:01,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:01,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732512834] [2021-12-14 15:13:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:01,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:01,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732512834] [2021-12-14 15:13:01,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732512834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:01,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:01,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:13:01,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749229683] [2021-12-14 15:13:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:01,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:13:01,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:13:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:13:01,952 INFO L87 Difference]: Start difference. First operand 8953 states and 11811 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:03,837 INFO L93 Difference]: Finished difference Result 16560 states and 23109 transitions. [2021-12-14 15:13:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 15:13:03,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-14 15:13:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:03,863 INFO L225 Difference]: With dead ends: 16560 [2021-12-14 15:13:03,864 INFO L226 Difference]: Without dead ends: 16556 [2021-12-14 15:13:03,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-12-14 15:13:03,870 INFO L933 BasicCegarLoop]: 2740 mSDtfsCounter, 16163 mSDsluCounter, 9991 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16163 SdHoareTripleChecker+Valid, 12731 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:03,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16163 Valid, 12731 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:13:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16556 states. [2021-12-14 15:13:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16556 to 8949. [2021-12-14 15:13:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8949 states, 8933 states have (on average 1.3217284227023396) internal successors, (11807), 8948 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8949 states to 8949 states and 11807 transitions. [2021-12-14 15:13:04,240 INFO L78 Accepts]: Start accepts. Automaton has 8949 states and 11807 transitions. Word has length 69 [2021-12-14 15:13:04,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:04,240 INFO L470 AbstractCegarLoop]: Abstraction has 8949 states and 11807 transitions. [2021-12-14 15:13:04,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8949 states and 11807 transitions. [2021-12-14 15:13:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:13:04,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:04,262 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] [2021-12-14 15:13:04,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:13:04,262 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:04,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash -50233035, now seen corresponding path program 1 times [2021-12-14 15:13:04,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:04,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940355193] [2021-12-14 15:13:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:04,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:04,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940355193] [2021-12-14 15:13:04,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940355193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:04,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:04,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:13:04,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459883102] [2021-12-14 15:13:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:04,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:13:04,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:13:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:13:04,449 INFO L87 Difference]: Start difference. First operand 8949 states and 11807 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:06,831 INFO L93 Difference]: Finished difference Result 11914 states and 16033 transitions. [2021-12-14 15:13:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:13:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-14 15:13:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:06,848 INFO L225 Difference]: With dead ends: 11914 [2021-12-14 15:13:06,848 INFO L226 Difference]: Without dead ends: 11908 [2021-12-14 15:13:06,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-12-14 15:13:06,852 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 9211 mSDsluCounter, 5971 mSDsCounter, 0 mSdLazyCounter, 5967 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9211 SdHoareTripleChecker+Valid, 7447 SdHoareTripleChecker+Invalid, 6138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 5967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:06,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9211 Valid, 7447 Invalid, 6138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 5967 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:13:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11908 states. [2021-12-14 15:13:07,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11908 to 8949. [2021-12-14 15:13:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8949 states, 8933 states have (on average 1.3216164782267996) internal successors, (11806), 8948 states have internal predecessors, (11806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8949 states to 8949 states and 11806 transitions. [2021-12-14 15:13:07,333 INFO L78 Accepts]: Start accepts. Automaton has 8949 states and 11806 transitions. Word has length 69 [2021-12-14 15:13:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:07,333 INFO L470 AbstractCegarLoop]: Abstraction has 8949 states and 11806 transitions. [2021-12-14 15:13:07,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 8949 states and 11806 transitions. [2021-12-14 15:13:07,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:13:07,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:07,340 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] [2021-12-14 15:13:07,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:13:07,340 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash 487125926, now seen corresponding path program 1 times [2021-12-14 15:13:07,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:07,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511674431] [2021-12-14 15:13:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:07,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:07,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:07,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511674431] [2021-12-14 15:13:07,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511674431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:07,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:07,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:13:07,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287960453] [2021-12-14 15:13:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:07,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:13:07,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:13:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:13:07,452 INFO L87 Difference]: Start difference. First operand 8949 states and 11806 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:10,018 INFO L93 Difference]: Finished difference Result 11316 states and 14888 transitions. [2021-12-14 15:13:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 15:13:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-14 15:13:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:10,033 INFO L225 Difference]: With dead ends: 11316 [2021-12-14 15:13:10,034 INFO L226 Difference]: Without dead ends: 11307 [2021-12-14 15:13:10,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:13:10,037 INFO L933 BasicCegarLoop]: 1437 mSDtfsCounter, 13776 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 5384 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13776 SdHoareTripleChecker+Valid, 6087 SdHoareTripleChecker+Invalid, 5733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 5384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:10,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13776 Valid, 6087 Invalid, 5733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 5384 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:13:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2021-12-14 15:13:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 8949. [2021-12-14 15:13:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8949 states, 8933 states have (on average 1.3215045337512594) internal successors, (11805), 8948 states have internal predecessors, (11805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8949 states to 8949 states and 11805 transitions. [2021-12-14 15:13:10,503 INFO L78 Accepts]: Start accepts. Automaton has 8949 states and 11805 transitions. Word has length 69 [2021-12-14 15:13:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:10,504 INFO L470 AbstractCegarLoop]: Abstraction has 8949 states and 11805 transitions. [2021-12-14 15:13:10,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 8949 states and 11805 transitions. [2021-12-14 15:13:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:13:10,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:10,509 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] [2021-12-14 15:13:10,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:13:10,509 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -465119641, now seen corresponding path program 1 times [2021-12-14 15:13:10,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:10,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731944905] [2021-12-14 15:13:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:10,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:10,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:10,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731944905] [2021-12-14 15:13:10,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731944905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:10,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:10,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:13:10,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767890267] [2021-12-14 15:13:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:10,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 15:13:10,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 15:13:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:13:10,717 INFO L87 Difference]: Start difference. First operand 8949 states and 11805 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:14,396 INFO L93 Difference]: Finished difference Result 24532 states and 34391 transitions. [2021-12-14 15:13:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-14 15:13:14,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-14 15:13:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:14,425 INFO L225 Difference]: With dead ends: 24532 [2021-12-14 15:13:14,425 INFO L226 Difference]: Without dead ends: 23117 [2021-12-14 15:13:14,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2021-12-14 15:13:14,432 INFO L933 BasicCegarLoop]: 2514 mSDtfsCounter, 22699 mSDsluCounter, 9796 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22699 SdHoareTripleChecker+Valid, 12310 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:14,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22699 Valid, 12310 Invalid, 3261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:13:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23117 states. [2021-12-14 15:13:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23117 to 8880. [2021-12-14 15:13:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8865 states have (on average 1.321376198533559) internal successors, (11714), 8879 states have internal predecessors, (11714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 11714 transitions. [2021-12-14 15:13:15,004 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 11714 transitions. Word has length 69 [2021-12-14 15:13:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:15,004 INFO L470 AbstractCegarLoop]: Abstraction has 8880 states and 11714 transitions. [2021-12-14 15:13:15,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 11714 transitions. [2021-12-14 15:13:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-14 15:13:15,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:15,010 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] [2021-12-14 15:13:15,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:13:15,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash 215127807, now seen corresponding path program 1 times [2021-12-14 15:13:15,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:15,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518680083] [2021-12-14 15:13:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:15,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:15,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:15,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518680083] [2021-12-14 15:13:15,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518680083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:15,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:15,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:13:15,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849287471] [2021-12-14 15:13:15,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:15,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:13:15,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:13:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:13:15,205 INFO L87 Difference]: Start difference. First operand 8880 states and 11714 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:20,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:20,040 INFO L93 Difference]: Finished difference Result 25460 states and 35982 transitions. [2021-12-14 15:13:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 15:13:20,040 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-14 15:13:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:20,068 INFO L225 Difference]: With dead ends: 25460 [2021-12-14 15:13:20,069 INFO L226 Difference]: Without dead ends: 23881 [2021-12-14 15:13:20,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-12-14 15:13:20,080 INFO L933 BasicCegarLoop]: 3033 mSDtfsCounter, 14262 mSDsluCounter, 17524 mSDsCounter, 0 mSdLazyCounter, 4527 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14262 SdHoareTripleChecker+Valid, 20557 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 4527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:20,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14262 Valid, 20557 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 4527 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:13:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23881 states. [2021-12-14 15:13:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23881 to 8647. [2021-12-14 15:13:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8647 states, 8633 states have (on average 1.3191242905131473) internal successors, (11388), 8646 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8647 states to 8647 states and 11388 transitions. [2021-12-14 15:13:20,837 INFO L78 Accepts]: Start accepts. Automaton has 8647 states and 11388 transitions. Word has length 70 [2021-12-14 15:13:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:20,837 INFO L470 AbstractCegarLoop]: Abstraction has 8647 states and 11388 transitions. [2021-12-14 15:13:20,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 8647 states and 11388 transitions. [2021-12-14 15:13:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-14 15:13:20,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:20,844 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] [2021-12-14 15:13:20,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:13:20,844 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 502084112, now seen corresponding path program 1 times [2021-12-14 15:13:20,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402830873] [2021-12-14 15:13:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:20,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402830873] [2021-12-14 15:13:21,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402830873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:21,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:21,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:13:21,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559197169] [2021-12-14 15:13:21,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:21,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:13:21,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:21,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:13:21,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:13:21,127 INFO L87 Difference]: Start difference. First operand 8647 states and 11388 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:25,438 INFO L93 Difference]: Finished difference Result 19804 states and 27582 transitions. [2021-12-14 15:13:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 15:13:25,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-14 15:13:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:25,461 INFO L225 Difference]: With dead ends: 19804 [2021-12-14 15:13:25,461 INFO L226 Difference]: Without dead ends: 19792 [2021-12-14 15:13:25,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-12-14 15:13:25,466 INFO L933 BasicCegarLoop]: 2618 mSDtfsCounter, 16828 mSDsluCounter, 12555 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16828 SdHoareTripleChecker+Valid, 15173 SdHoareTripleChecker+Invalid, 3819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:25,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16828 Valid, 15173 Invalid, 3819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:13:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19792 states. [2021-12-14 15:13:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19792 to 8640. [2021-12-14 15:13:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8640 states, 8626 states have (on average 1.3192673313239045) internal successors, (11380), 8639 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8640 states to 8640 states and 11380 transitions. [2021-12-14 15:13:26,264 INFO L78 Accepts]: Start accepts. Automaton has 8640 states and 11380 transitions. Word has length 70 [2021-12-14 15:13:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:26,264 INFO L470 AbstractCegarLoop]: Abstraction has 8640 states and 11380 transitions. [2021-12-14 15:13:26,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8640 states and 11380 transitions. [2021-12-14 15:13:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-14 15:13:26,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:26,271 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] [2021-12-14 15:13:26,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:13:26,271 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash -683220265, now seen corresponding path program 1 times [2021-12-14 15:13:26,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:26,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340292515] [2021-12-14 15:13:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:26,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:26,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:26,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340292515] [2021-12-14 15:13:26,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340292515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:26,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:26,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:13:26,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909746357] [2021-12-14 15:13:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:26,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:13:26,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:13:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:13:26,346 INFO L87 Difference]: Start difference. First operand 8640 states and 11380 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:27,109 INFO L93 Difference]: Finished difference Result 12575 states and 16886 transitions. [2021-12-14 15:13:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:13:27,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-14 15:13:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:27,118 INFO L225 Difference]: With dead ends: 12575 [2021-12-14 15:13:27,118 INFO L226 Difference]: Without dead ends: 7653 [2021-12-14 15:13:27,123 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 [2021-12-14 15:13:27,123 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 1923 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:27,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1923 Valid, 2623 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:13:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2021-12-14 15:13:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 7634. [2021-12-14 15:13:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7634 states, 7624 states have (on average 1.3374868835257083) internal successors, (10197), 7633 states have internal predecessors, (10197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 10197 transitions. [2021-12-14 15:13:27,757 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 10197 transitions. Word has length 70 [2021-12-14 15:13:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:27,757 INFO L470 AbstractCegarLoop]: Abstraction has 7634 states and 10197 transitions. [2021-12-14 15:13:27,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 10197 transitions. [2021-12-14 15:13:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 15:13:27,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:27,763 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] [2021-12-14 15:13:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:13:27,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1404122129, now seen corresponding path program 1 times [2021-12-14 15:13:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:27,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787009202] [2021-12-14 15:13:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:27,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:27,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:27,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787009202] [2021-12-14 15:13:27,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787009202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:27,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:27,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:13:27,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915554032] [2021-12-14 15:13:27,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:27,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:13:27,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:13:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:13:27,854 INFO L87 Difference]: Start difference. First operand 7634 states and 10197 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:31,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:31,279 INFO L93 Difference]: Finished difference Result 15150 states and 21099 transitions. [2021-12-14 15:13:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:13:31,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-14 15:13:31,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:31,294 INFO L225 Difference]: With dead ends: 15150 [2021-12-14 15:13:31,295 INFO L226 Difference]: Without dead ends: 13142 [2021-12-14 15:13:31,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:13:31,299 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 10890 mSDsluCounter, 3688 mSDsCounter, 0 mSdLazyCounter, 4237 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10890 SdHoareTripleChecker+Valid, 4831 SdHoareTripleChecker+Invalid, 4481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 4237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:31,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10890 Valid, 4831 Invalid, 4481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 4237 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:13:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13142 states. [2021-12-14 15:13:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13142 to 7634. [2021-12-14 15:13:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7634 states, 7624 states have (on average 1.3373557187827911) internal successors, (10196), 7633 states have internal predecessors, (10196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 10196 transitions. [2021-12-14 15:13:32,017 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 10196 transitions. Word has length 71 [2021-12-14 15:13:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:32,017 INFO L470 AbstractCegarLoop]: Abstraction has 7634 states and 10196 transitions. [2021-12-14 15:13:32,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 10196 transitions. [2021-12-14 15:13:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 15:13:32,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:32,022 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] [2021-12-14 15:13:32,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:13:32,022 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1017361466, now seen corresponding path program 1 times [2021-12-14 15:13:32,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:32,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408672226] [2021-12-14 15:13:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:32,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:32,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:32,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408672226] [2021-12-14 15:13:32,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408672226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:32,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:32,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:13:32,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152379831] [2021-12-14 15:13:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:32,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:13:32,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:13:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:13:32,144 INFO L87 Difference]: Start difference. First operand 7634 states and 10196 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:13:36,307 INFO L93 Difference]: Finished difference Result 15683 states and 21641 transitions. [2021-12-14 15:13:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 15:13:36,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-14 15:13:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:13:36,321 INFO L225 Difference]: With dead ends: 15683 [2021-12-14 15:13:36,321 INFO L226 Difference]: Without dead ends: 13675 [2021-12-14 15:13:36,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-12-14 15:13:36,325 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 10084 mSDsluCounter, 6042 mSDsCounter, 0 mSdLazyCounter, 6629 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10084 SdHoareTripleChecker+Valid, 7221 SdHoareTripleChecker+Invalid, 6876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 6629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:13:36,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10084 Valid, 7221 Invalid, 6876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 6629 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 15:13:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13675 states. [2021-12-14 15:13:37,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13675 to 7638. [2021-12-14 15:13:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7638 states, 7628 states have (on average 1.3371788148925012) internal successors, (10200), 7637 states have internal predecessors, (10200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 10200 transitions. [2021-12-14 15:13:37,060 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 10200 transitions. Word has length 71 [2021-12-14 15:13:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:13:37,060 INFO L470 AbstractCegarLoop]: Abstraction has 7638 states and 10200 transitions. [2021-12-14 15:13:37,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:13:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 10200 transitions. [2021-12-14 15:13:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 15:13:37,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:13:37,065 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] [2021-12-14 15:13:37,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:13:37,065 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-12-14 15:13:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:13:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1222862511, now seen corresponding path program 1 times [2021-12-14 15:13:37,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:13:37,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660955604] [2021-12-14 15:13:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:13:37,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:13:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:13:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:13:37,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:13:37,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660955604] [2021-12-14 15:13:37,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660955604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:13:37,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:13:37,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:13:37,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571899913] [2021-12-14 15:13:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:13:37,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:13:37,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:13:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:13:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:13:37,185 INFO L87 Difference]: Start difference. First operand 7638 states and 10200 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)