./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-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 7de925c132a7c7e17dbaa287f5760b6cfcdaa30e9bf1eb8266d373ba54e5d2bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:17:50,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:17:50,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:17:50,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:17:50,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:17:50,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:17:50,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:17:50,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:17:50,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:17:50,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:17:50,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:17:50,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:17:50,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:17:50,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:17:50,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:17:50,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:17:50,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:17:50,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:17:50,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:17:50,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:17:50,377 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:17:50,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:17:50,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:17:50,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:17:50,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:17:50,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:17:50,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:17:50,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:17:50,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:17:50,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:17:50,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:17:50,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:17:50,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:17:50,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:17:50,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:17:50,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:17:50,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:17:50,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:17:50,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:17:50,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:17:50,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:17:50,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:17:50,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:17:50,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:17:50,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:17:50,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:17:50,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:17:50,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:17:50,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:17:50,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:17:50,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:17:50,453 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:17:50,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:17:50,455 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:17:50,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:17:50,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:17:50,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:17:50,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:17:50,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:17:50,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:17:50,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:17:50,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:17:50,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:17:50,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:17:50,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:17:50,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:17:50,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:17:50,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:17:50,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:17:50,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:17:50,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:17:50,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:17:50,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:17:50,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:17:50,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:17:50,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:17:50,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7de925c132a7c7e17dbaa287f5760b6cfcdaa30e9bf1eb8266d373ba54e5d2bb [2022-07-21 06:17:50,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:17:50,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:17:50,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:17:50,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:17:50,858 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:17:50,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-07-21 06:17:50,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7407f1fc/d7925e6ddfcf490b81fc3bc68bde64d0/FLAG134189d32 [2022-07-21 06:17:51,582 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:17:51,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-07-21 06:17:51,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7407f1fc/d7925e6ddfcf490b81fc3bc68bde64d0/FLAG134189d32 [2022-07-21 06:17:51,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7407f1fc/d7925e6ddfcf490b81fc3bc68bde64d0 [2022-07-21 06:17:51,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:17:51,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:17:51,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:17:51,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:17:51,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:17:51,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:17:51" (1/1) ... [2022-07-21 06:17:51,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f40177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:51, skipping insertion in model container [2022-07-21 06:17:51,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:17:51" (1/1) ... [2022-07-21 06:17:51,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:17:51,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:17:52,563 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34952,34965] [2022-07-21 06:17:52,583 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[35842,35855] [2022-07-21 06:17:52,614 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37629,37642] [2022-07-21 06:17:52,637 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38987,39000] [2022-07-21 06:17:52,769 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[53558,53571] [2022-07-21 06:17:52,883 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[62798,62811] [2022-07-21 06:17:52,898 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[63691,63704] [2022-07-21 06:17:52,919 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[65481,65494] [2022-07-21 06:17:52,934 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[66374,66387] [2022-07-21 06:17:52,969 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[69061,69074] [2022-07-21 06:17:52,983 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[69954,69967] [2022-07-21 06:17:53,007 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[71744,71757] [2022-07-21 06:17:53,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:17:53,088 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:17:53,440 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34952,34965] [2022-07-21 06:17:53,465 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[35842,35855] [2022-07-21 06:17:53,483 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37629,37642] [2022-07-21 06:17:53,498 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38987,39000] [2022-07-21 06:17:53,601 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[53558,53571] [2022-07-21 06:17:53,680 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[62798,62811] [2022-07-21 06:17:53,693 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[63691,63704] [2022-07-21 06:17:53,711 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[65481,65494] [2022-07-21 06:17:53,723 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[66374,66387] [2022-07-21 06:17:53,747 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[69061,69074] [2022-07-21 06:17:53,758 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[69954,69967] [2022-07-21 06:17:53,776 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[71744,71757] [2022-07-21 06:17:53,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:17:53,844 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:17:53,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53 WrapperNode [2022-07-21 06:17:53,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:17:53,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:17:53,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:17:53,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:17:53,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:53,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:53,982 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 4114 [2022-07-21 06:17:53,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:17:53,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:17:53,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:17:53,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:17:53,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:53,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:17:54,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:17:54,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:17:54,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:17:54,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (1/1) ... [2022-07-21 06:17:54,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:17:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:17:54,181 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) [2022-07-21 06:17:54,193 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 [2022-07-21 06:17:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:17:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:17:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:17:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:17:54,508 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:17:54,510 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:17:56,857 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:17:56,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:17:56,874 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 06:17:56,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:17:56 BoogieIcfgContainer [2022-07-21 06:17:56,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:17:56,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:17:56,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:17:56,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:17:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:17:51" (1/3) ... [2022-07-21 06:17:56,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a773215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:17:56, skipping insertion in model container [2022-07-21 06:17:56,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:17:53" (2/3) ... [2022-07-21 06:17:56,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a773215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:17:56, skipping insertion in model container [2022-07-21 06:17:56,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:17:56" (3/3) ... [2022-07-21 06:17:56,885 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-07-21 06:17:56,899 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:17:56,899 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-07-21 06:17:56,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:17:56,990 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@776aeff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@654e8d75 [2022-07-21 06:17:56,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-21 06:17:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 987 states, 974 states have (on average 1.8141683778234086) internal successors, (1767), 986 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-21 06:17:57,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:57,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:17:57,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:17:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1465969387, now seen corresponding path program 1 times [2022-07-21 06:17:57,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402634821] [2022-07-21 06:17:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:17:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:57,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402634821] [2022-07-21 06:17:57,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402634821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:57,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:57,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:17:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607311648] [2022-07-21 06:17:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:57,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:17:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:17:57,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:17:57,839 INFO L87 Difference]: Start difference. First operand has 987 states, 974 states have (on average 1.8141683778234086) internal successors, (1767), 986 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:17:58,329 INFO L93 Difference]: Finished difference Result 1762 states and 3134 transitions. [2022-07-21 06:17:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:17:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2022-07-21 06:17:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:17:58,368 INFO L225 Difference]: With dead ends: 1762 [2022-07-21 06:17:58,368 INFO L226 Difference]: Without dead ends: 1543 [2022-07-21 06:17:58,375 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:17:58,379 INFO L413 NwaCegarLoop]: 1894 mSDtfsCounter, 1045 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:17:58,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 3209 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 06:17:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-07-21 06:17:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2022-07-21 06:17:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1529 states have (on average 1.5604970568999346) internal successors, (2386), 1540 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2386 transitions. [2022-07-21 06:17:58,546 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2386 transitions. Word has length 314 [2022-07-21 06:17:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:17:58,549 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2386 transitions. [2022-07-21 06:17:58,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2386 transitions. [2022-07-21 06:17:58,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-21 06:17:58,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:58,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:17:58,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:17:58,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:17:58,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1465538411, now seen corresponding path program 1 times [2022-07-21 06:17:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:58,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496845239] [2022-07-21 06:17:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:17:59,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496845239] [2022-07-21 06:17:59,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496845239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:59,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:59,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:17:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828841587] [2022-07-21 06:17:59,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:59,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:17:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:17:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:17:59,159 INFO L87 Difference]: Start difference. First operand 1541 states and 2386 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:17:59,481 INFO L93 Difference]: Finished difference Result 4559 states and 7049 transitions. [2022-07-21 06:17:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:17:59,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2022-07-21 06:17:59,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:17:59,498 INFO L225 Difference]: With dead ends: 4559 [2022-07-21 06:17:59,498 INFO L226 Difference]: Without dead ends: 3029 [2022-07-21 06:17:59,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:17:59,507 INFO L413 NwaCegarLoop]: 2457 mSDtfsCounter, 3326 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3326 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:17:59,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3326 Valid, 3884 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:17:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2022-07-21 06:17:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2874. [2022-07-21 06:17:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2862 states have (on average 1.555206149545772) internal successors, (4451), 2873 states have internal predecessors, (4451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4451 transitions. [2022-07-21 06:17:59,692 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4451 transitions. Word has length 314 [2022-07-21 06:17:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:17:59,693 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 4451 transitions. [2022-07-21 06:17:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:17:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4451 transitions. [2022-07-21 06:17:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-21 06:17:59,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:59,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:17:59,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:17:59,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:17:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash -170087591, now seen corresponding path program 1 times [2022-07-21 06:17:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:59,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862314565] [2022-07-21 06:17:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:59,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:17:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:59,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862314565] [2022-07-21 06:17:59,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862314565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:59,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:59,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:17:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293359468] [2022-07-21 06:17:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:59,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:17:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:17:59,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:17:59,866 INFO L87 Difference]: Start difference. First operand 2874 states and 4451 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:00,251 INFO L93 Difference]: Finished difference Result 8399 states and 12965 transitions. [2022-07-21 06:18:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:18:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-07-21 06:18:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:00,277 INFO L225 Difference]: With dead ends: 8399 [2022-07-21 06:18:00,277 INFO L226 Difference]: Without dead ends: 5650 [2022-07-21 06:18:00,287 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:18:00,289 INFO L413 NwaCegarLoop]: 2929 mSDtfsCounter, 1361 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:00,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 4366 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:18:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5650 states. [2022-07-21 06:18:00,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5650 to 5495. [2022-07-21 06:18:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5495 states, 5483 states have (on average 1.5486047784059822) internal successors, (8491), 5494 states have internal predecessors, (8491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 8491 transitions. [2022-07-21 06:18:00,698 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 8491 transitions. Word has length 316 [2022-07-21 06:18:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:00,698 INFO L495 AbstractCegarLoop]: Abstraction has 5495 states and 8491 transitions. [2022-07-21 06:18:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 8491 transitions. [2022-07-21 06:18:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-21 06:18:00,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:00,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:18:00,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash -295747938, now seen corresponding path program 1 times [2022-07-21 06:18:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74060192] [2022-07-21 06:18:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:00,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:00,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:00,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74060192] [2022-07-21 06:18:00,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74060192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:00,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:00,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:18:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464562639] [2022-07-21 06:18:00,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:18:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:18:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:18:00,821 INFO L87 Difference]: Start difference. First operand 5495 states and 8491 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:01,475 INFO L93 Difference]: Finished difference Result 16418 states and 25357 transitions. [2022-07-21 06:18:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:18:01,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-07-21 06:18:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:01,521 INFO L225 Difference]: With dead ends: 16418 [2022-07-21 06:18:01,521 INFO L226 Difference]: Without dead ends: 10961 [2022-07-21 06:18:01,532 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:18:01,534 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1491 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:01,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 4480 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:18:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10961 states. [2022-07-21 06:18:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10961 to 5514. [2022-07-21 06:18:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5502 states have (on average 1.5483460559796438) internal successors, (8519), 5513 states have internal predecessors, (8519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8519 transitions. [2022-07-21 06:18:02,016 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8519 transitions. Word has length 316 [2022-07-21 06:18:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:02,017 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8519 transitions. [2022-07-21 06:18:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8519 transitions. [2022-07-21 06:18:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-21 06:18:02,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:02,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:02,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:18:02,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1035756933, now seen corresponding path program 1 times [2022-07-21 06:18:02,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:02,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109037103] [2022-07-21 06:18:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:02,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:02,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:02,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109037103] [2022-07-21 06:18:02,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109037103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:02,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:02,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:18:02,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216534777] [2022-07-21 06:18:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:02,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:18:02,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:18:02,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:18:02,130 INFO L87 Difference]: Start difference. First operand 5514 states and 8519 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:02,730 INFO L93 Difference]: Finished difference Result 16437 states and 25378 transitions. [2022-07-21 06:18:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:18:02,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 317 [2022-07-21 06:18:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:02,768 INFO L225 Difference]: With dead ends: 16437 [2022-07-21 06:18:02,768 INFO L226 Difference]: Without dead ends: 10979 [2022-07-21 06:18:02,782 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:18:02,783 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1486 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:02,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 4480 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:18:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10979 states. [2022-07-21 06:18:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10979 to 5532. [2022-07-21 06:18:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5520 states have (on average 1.5471014492753623) internal successors, (8540), 5531 states have internal predecessors, (8540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 8540 transitions. [2022-07-21 06:18:03,305 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 8540 transitions. Word has length 317 [2022-07-21 06:18:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:03,305 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 8540 transitions. [2022-07-21 06:18:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 8540 transitions. [2022-07-21 06:18:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 06:18:03,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:03,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:03,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:18:03,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash 976828212, now seen corresponding path program 1 times [2022-07-21 06:18:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:03,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767261670] [2022-07-21 06:18:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:03,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:03,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767261670] [2022-07-21 06:18:03,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767261670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:03,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:03,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:18:03,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811292659] [2022-07-21 06:18:03,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:03,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:18:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:18:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:18:03,425 INFO L87 Difference]: Start difference. First operand 5532 states and 8540 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:04,143 INFO L93 Difference]: Finished difference Result 16065 states and 24717 transitions. [2022-07-21 06:18:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:18:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 318 [2022-07-21 06:18:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:04,174 INFO L225 Difference]: With dead ends: 16065 [2022-07-21 06:18:04,174 INFO L226 Difference]: Without dead ends: 10774 [2022-07-21 06:18:04,189 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:18:04,194 INFO L413 NwaCegarLoop]: 2936 mSDtfsCounter, 1355 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:04,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 4373 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:18:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2022-07-21 06:18:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10619. [2022-07-21 06:18:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10619 states, 10607 states have (on average 1.5374752521919488) internal successors, (16308), 10618 states have internal predecessors, (16308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10619 states to 10619 states and 16308 transitions. [2022-07-21 06:18:04,888 INFO L78 Accepts]: Start accepts. Automaton has 10619 states and 16308 transitions. Word has length 318 [2022-07-21 06:18:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 10619 states and 16308 transitions. [2022-07-21 06:18:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10619 states and 16308 transitions. [2022-07-21 06:18:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 06:18:04,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:04,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:04,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:18:04,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:04,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2079420463, now seen corresponding path program 1 times [2022-07-21 06:18:04,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:04,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263706995] [2022-07-21 06:18:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:04,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:05,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:05,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263706995] [2022-07-21 06:18:05,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263706995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:05,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:05,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:18:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599736355] [2022-07-21 06:18:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:18:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:18:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:18:05,270 INFO L87 Difference]: Start difference. First operand 10619 states and 16308 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:06,986 INFO L93 Difference]: Finished difference Result 31165 states and 47761 transitions. [2022-07-21 06:18:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:18:06,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 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 318 [2022-07-21 06:18:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:07,039 INFO L225 Difference]: With dead ends: 31165 [2022-07-21 06:18:07,040 INFO L226 Difference]: Without dead ends: 20601 [2022-07-21 06:18:07,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:18:07,063 INFO L413 NwaCegarLoop]: 2385 mSDtfsCounter, 2905 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 5223 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:07,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2905 Valid, 5223 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:18:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20601 states. [2022-07-21 06:18:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20601 to 20452. [2022-07-21 06:18:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20452 states, 20440 states have (on average 1.5243150684931508) internal successors, (31157), 20451 states have internal predecessors, (31157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20452 states to 20452 states and 31157 transitions. [2022-07-21 06:18:08,347 INFO L78 Accepts]: Start accepts. Automaton has 20452 states and 31157 transitions. Word has length 318 [2022-07-21 06:18:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:08,348 INFO L495 AbstractCegarLoop]: Abstraction has 20452 states and 31157 transitions. [2022-07-21 06:18:08,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 20452 states and 31157 transitions. [2022-07-21 06:18:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-07-21 06:18:08,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:08,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:08,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:18:08,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash -854991281, now seen corresponding path program 1 times [2022-07-21 06:18:08,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:08,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49566800] [2022-07-21 06:18:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:08,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:08,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49566800] [2022-07-21 06:18:08,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49566800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:08,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:08,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:18:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082607822] [2022-07-21 06:18:08,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:08,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:18:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:18:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:18:08,519 INFO L87 Difference]: Start difference. First operand 20452 states and 31157 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:10,794 INFO L93 Difference]: Finished difference Result 59950 states and 91090 transitions. [2022-07-21 06:18:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:18:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2022-07-21 06:18:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:10,906 INFO L225 Difference]: With dead ends: 59950 [2022-07-21 06:18:10,907 INFO L226 Difference]: Without dead ends: 40015 [2022-07-21 06:18:10,956 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:18:10,957 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 1338 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:10,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 4343 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:18:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40015 states. [2022-07-21 06:18:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40015 to 39874. [2022-07-21 06:18:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39874 states, 39862 states have (on average 1.5129697456223972) internal successors, (60310), 39873 states have internal predecessors, (60310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39874 states to 39874 states and 60310 transitions. [2022-07-21 06:18:13,217 INFO L78 Accepts]: Start accepts. Automaton has 39874 states and 60310 transitions. Word has length 320 [2022-07-21 06:18:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:13,217 INFO L495 AbstractCegarLoop]: Abstraction has 39874 states and 60310 transitions. [2022-07-21 06:18:13,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 39874 states and 60310 transitions. [2022-07-21 06:18:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-07-21 06:18:13,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:13,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:13,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:18:13,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:13,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash 178698796, now seen corresponding path program 1 times [2022-07-21 06:18:13,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:13,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671672698] [2022-07-21 06:18:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:13,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:13,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:13,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671672698] [2022-07-21 06:18:13,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671672698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:13,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:13,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:18:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846928397] [2022-07-21 06:18:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:13,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:18:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:18:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:18:13,604 INFO L87 Difference]: Start difference. First operand 39874 states and 60310 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:18,930 INFO L93 Difference]: Finished difference Result 117451 states and 177232 transitions. [2022-07-21 06:18:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:18:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2022-07-21 06:18:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:19,109 INFO L225 Difference]: With dead ends: 117451 [2022-07-21 06:18:19,109 INFO L226 Difference]: Without dead ends: 77728 [2022-07-21 06:18:19,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:18:19,267 INFO L413 NwaCegarLoop]: 2399 mSDtfsCounter, 2879 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 5205 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:19,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 5205 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:18:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77728 states. [2022-07-21 06:18:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77728 to 77617. [2022-07-21 06:18:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77617 states, 77605 states have (on average 1.4981766638747502) internal successors, (116266), 77616 states have internal predecessors, (116266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77617 states to 77617 states and 116266 transitions. [2022-07-21 06:18:23,863 INFO L78 Accepts]: Start accepts. Automaton has 77617 states and 116266 transitions. Word has length 320 [2022-07-21 06:18:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:23,863 INFO L495 AbstractCegarLoop]: Abstraction has 77617 states and 116266 transitions. [2022-07-21 06:18:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:18:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 77617 states and 116266 transitions. [2022-07-21 06:18:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-07-21 06:18:23,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:23,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:18:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 06:18:23,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 06:18:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2044809797, now seen corresponding path program 1 times [2022-07-21 06:18:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:24,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113294342] [2022-07-21 06:18:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:24,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:18:24,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:24,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113294342] [2022-07-21 06:18:24,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113294342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:24,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:24,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:18:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399173794] [2022-07-21 06:18:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:18:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:18:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:18:24,468 INFO L87 Difference]: Start difference. First operand 77617 states and 116266 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)