./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0 --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 c74f92ba3d978b3a2efb098ebc8eb373bc42abebaabf8c6efaf148fbe05036e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:33:23,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:33:23,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:33:23,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:33:23,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:33:23,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:33:23,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:33:23,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:33:23,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:33:23,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:33:23,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:33:23,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:33:23,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:33:23,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:33:23,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:33:23,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:33:23,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:33:23,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:33:23,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:33:23,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:33:23,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:33:23,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:33:23,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:33:23,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:33:23,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:33:23,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:33:23,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:33:23,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:33:23,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:33:23,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:33:23,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:33:23,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:33:23,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:33:23,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:33:23,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:33:23,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:33:23,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:33:23,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:33:23,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:33:23,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:33:23,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:33:23,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:33:23,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:33:23,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:33:23,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:33:23,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:33:23,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:33:23,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:33:23,416 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:33:23,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:33:23,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:33:23,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:33:23,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:33:23,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:33:23,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:33:23,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:33:23,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:33:23,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:33:23,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:33:23,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:33:23,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:33:23,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:33:23,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:33:23,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:33:23,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:33:23,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:33:23,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:33:23,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:33:23,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:33:23,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:33:23,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:33:23,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:33:23,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:33:23,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:33:23,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c74f92ba3d978b3a2efb098ebc8eb373bc42abebaabf8c6efaf148fbe05036e0 [2021-11-22 15:33:23,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:33:23,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:33:23,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:33:23,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:33:23,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:33:23,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-22 15:33:23,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/data/ead9968f4/ea18ca2fca084e62a9ae6ba73c1848bf/FLAG9ccd4de25 [2021-11-22 15:33:24,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:33:24,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-22 15:33:24,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/data/ead9968f4/ea18ca2fca084e62a9ae6ba73c1848bf/FLAG9ccd4de25 [2021-11-22 15:33:24,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/data/ead9968f4/ea18ca2fca084e62a9ae6ba73c1848bf [2021-11-22 15:33:24,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:33:24,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:33:24,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:33:24,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:33:24,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:33:24,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:33:24" (1/1) ... [2021-11-22 15:33:24,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778f425f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:24, skipping insertion in model container [2021-11-22 15:33:24,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:33:24" (1/1) ... [2021-11-22 15:33:24,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:33:25,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:33:25,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2021-11-22 15:33:25,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2021-11-22 15:33:25,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2021-11-22 15:33:25,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2021-11-22 15:33:25,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2021-11-22 15:33:25,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2021-11-22 15:33:25,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2021-11-22 15:33:25,874 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2021-11-22 15:33:25,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2021-11-22 15:33:25,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2021-11-22 15:33:25,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2021-11-22 15:33:26,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:33:26,042 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:33:26,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2021-11-22 15:33:26,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2021-11-22 15:33:26,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2021-11-22 15:33:26,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2021-11-22 15:33:26,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2021-11-22 15:33:26,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2021-11-22 15:33:26,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2021-11-22 15:33:26,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2021-11-22 15:33:26,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2021-11-22 15:33:26,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2021-11-22 15:33:26,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2021-11-22 15:33:26,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:33:26,399 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:33:26,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26 WrapperNode [2021-11-22 15:33:26,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:33:26,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:33:26,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:33:26,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:33:26,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,583 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2770 [2021-11-22 15:33:26,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:33:26,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:33:26,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:33:26,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:33:26,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:33:26,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:33:26,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:33:26,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:33:26,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (1/1) ... [2021-11-22 15:33:26,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:33:26,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:33:26,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:33:26,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:33:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:33:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:33:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:33:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:33:27,141 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:33:27,143 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:33:28,790 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:33:28,816 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:33:28,817 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:33:28,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:28 BoogieIcfgContainer [2021-11-22 15:33:28,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:33:28,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:33:28,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:33:28,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:33:28,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:33:24" (1/3) ... [2021-11-22 15:33:28,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc689a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:33:28, skipping insertion in model container [2021-11-22 15:33:28,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:26" (2/3) ... [2021-11-22 15:33:28,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc689a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:33:28, skipping insertion in model container [2021-11-22 15:33:28,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:28" (3/3) ... [2021-11-22 15:33:28,830 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-22 15:33:28,840 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:33:28,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 15:33:28,899 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:33:28,906 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:33:28,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 15:33:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 558 states have (on average 1.7831541218637992) internal successors, (995), 569 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:33:28,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:28,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:28,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 646480323, now seen corresponding path program 1 times [2021-11-22 15:33:28,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:28,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037388231] [2021-11-22 15:33:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:28,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:29,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:29,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037388231] [2021-11-22 15:33:29,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037388231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:29,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:29,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:29,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894523975] [2021-11-22 15:33:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:29,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:29,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:29,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:29,515 INFO L87 Difference]: Start difference. First operand has 570 states, 558 states have (on average 1.7831541218637992) internal successors, (995), 569 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:30,322 INFO L93 Difference]: Finished difference Result 785 states and 1334 transitions. [2021-11-22 15:33:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:30,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 15:33:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:30,354 INFO L225 Difference]: With dead ends: 785 [2021-11-22 15:33:30,355 INFO L226 Difference]: Without dead ends: 503 [2021-11-22 15:33:30,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:30,370 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 2416 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:30,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 551 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:33:30,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-11-22 15:33:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2021-11-22 15:33:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 492 states have (on average 1.274390243902439) internal successors, (627), 502 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 627 transitions. [2021-11-22 15:33:30,477 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 627 transitions. Word has length 60 [2021-11-22 15:33:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:30,477 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 627 transitions. [2021-11-22 15:33:30,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 627 transitions. [2021-11-22 15:33:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:33:30,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:30,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:30,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:33:30,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash 221242932, now seen corresponding path program 1 times [2021-11-22 15:33:30,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:30,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483389725] [2021-11-22 15:33:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:30,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:30,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:30,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483389725] [2021-11-22 15:33:30,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483389725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:30,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:30,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:30,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258322692] [2021-11-22 15:33:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:30,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:30,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:30,628 INFO L87 Difference]: Start difference. First operand 503 states and 627 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:31,001 INFO L93 Difference]: Finished difference Result 637 states and 796 transitions. [2021-11-22 15:33:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 15:33:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:31,009 INFO L225 Difference]: With dead ends: 637 [2021-11-22 15:33:31,010 INFO L226 Difference]: Without dead ends: 381 [2021-11-22 15:33:31,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:31,014 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1366 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:31,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 266 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:33:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-22 15:33:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-11-22 15:33:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 370 states have (on average 1.2864864864864864) internal successors, (476), 380 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 476 transitions. [2021-11-22 15:33:31,049 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 476 transitions. Word has length 60 [2021-11-22 15:33:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:31,049 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 476 transitions. [2021-11-22 15:33:31,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 476 transitions. [2021-11-22 15:33:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:33:31,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:31,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:31,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:33:31,053 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:31,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2147344789, now seen corresponding path program 1 times [2021-11-22 15:33:31,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:31,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520492223] [2021-11-22 15:33:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:31,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:31,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:31,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520492223] [2021-11-22 15:33:31,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520492223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:31,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:31,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:31,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42129094] [2021-11-22 15:33:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:31,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:31,179 INFO L87 Difference]: Start difference. First operand 381 states and 476 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:31,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:31,655 INFO L93 Difference]: Finished difference Result 713 states and 908 transitions. [2021-11-22 15:33:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:31,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 15:33:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:31,659 INFO L225 Difference]: With dead ends: 713 [2021-11-22 15:33:31,660 INFO L226 Difference]: Without dead ends: 509 [2021-11-22 15:33:31,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:31,662 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1661 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:31,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1661 Valid, 371 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:33:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-22 15:33:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 450. [2021-11-22 15:33:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 439 states have (on average 1.3416856492027336) internal successors, (589), 449 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 589 transitions. [2021-11-22 15:33:31,696 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 589 transitions. Word has length 60 [2021-11-22 15:33:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:31,697 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 589 transitions. [2021-11-22 15:33:31,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 589 transitions. [2021-11-22 15:33:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:33:31,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:31,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:31,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:33:31,700 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 604643521, now seen corresponding path program 1 times [2021-11-22 15:33:31,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:31,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966047533] [2021-11-22 15:33:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:31,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:31,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:31,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966047533] [2021-11-22 15:33:31,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966047533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:31,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:31,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:31,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685519525] [2021-11-22 15:33:31,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:31,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:31,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:31,796 INFO L87 Difference]: Start difference. First operand 450 states and 589 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:32,038 INFO L93 Difference]: Finished difference Result 606 states and 794 transitions. [2021-11-22 15:33:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-22 15:33:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:32,042 INFO L225 Difference]: With dead ends: 606 [2021-11-22 15:33:32,043 INFO L226 Difference]: Without dead ends: 357 [2021-11-22 15:33:32,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:32,048 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 902 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:32,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 209 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:33:32,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-22 15:33:32,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-22 15:33:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.346820809248555) internal successors, (466), 356 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 466 transitions. [2021-11-22 15:33:32,089 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 466 transitions. Word has length 62 [2021-11-22 15:33:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:32,092 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 466 transitions. [2021-11-22 15:33:32,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 466 transitions. [2021-11-22 15:33:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:33:32,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:32,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:32,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:33:32,097 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -699288056, now seen corresponding path program 1 times [2021-11-22 15:33:32,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145467813] [2021-11-22 15:33:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:32,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:32,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:32,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145467813] [2021-11-22 15:33:32,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145467813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:32,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:32,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:32,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793305687] [2021-11-22 15:33:32,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:32,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:32,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:32,412 INFO L87 Difference]: Start difference. First operand 357 states and 466 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:33,187 INFO L93 Difference]: Finished difference Result 810 states and 1097 transitions. [2021-11-22 15:33:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-22 15:33:33,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:33,195 INFO L225 Difference]: With dead ends: 810 [2021-11-22 15:33:33,195 INFO L226 Difference]: Without dead ends: 666 [2021-11-22 15:33:33,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:33:33,197 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2135 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:33,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2135 Valid, 923 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:33:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-22 15:33:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 357. [2021-11-22 15:33:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3439306358381502) internal successors, (465), 356 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 465 transitions. [2021-11-22 15:33:33,264 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 465 transitions. Word has length 64 [2021-11-22 15:33:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:33,264 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 465 transitions. [2021-11-22 15:33:33,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 465 transitions. [2021-11-22 15:33:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:33:33,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:33,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:33,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:33:33,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1796013608, now seen corresponding path program 1 times [2021-11-22 15:33:33,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856665932] [2021-11-22 15:33:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:33,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:33,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:33,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856665932] [2021-11-22 15:33:33,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856665932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:33,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:33,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:33,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659825884] [2021-11-22 15:33:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:33,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:33,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:33,540 INFO L87 Difference]: Start difference. First operand 357 states and 465 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:34,393 INFO L93 Difference]: Finished difference Result 915 states and 1258 transitions. [2021-11-22 15:33:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-22 15:33:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:34,400 INFO L225 Difference]: With dead ends: 915 [2021-11-22 15:33:34,400 INFO L226 Difference]: Without dead ends: 795 [2021-11-22 15:33:34,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:33:34,409 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1665 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:34,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 1079 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:33:34,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-22 15:33:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 357. [2021-11-22 15:33:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3410404624277457) internal successors, (464), 356 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 464 transitions. [2021-11-22 15:33:34,456 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 464 transitions. Word has length 64 [2021-11-22 15:33:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 464 transitions. [2021-11-22 15:33:34,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 464 transitions. [2021-11-22 15:33:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:33:34,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:34,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:34,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:33:34,459 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1577721816, now seen corresponding path program 1 times [2021-11-22 15:33:34,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:34,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350667281] [2021-11-22 15:33:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:34,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:34,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:34,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350667281] [2021-11-22 15:33:34,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350667281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:34,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:34,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:33:34,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571117831] [2021-11-22 15:33:34,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:34,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:33:34,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:33:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:33:34,695 INFO L87 Difference]: Start difference. First operand 357 states and 464 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:35,153 INFO L93 Difference]: Finished difference Result 724 states and 946 transitions. [2021-11-22 15:33:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:33:35,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-22 15:33:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:35,158 INFO L225 Difference]: With dead ends: 724 [2021-11-22 15:33:35,158 INFO L226 Difference]: Without dead ends: 531 [2021-11-22 15:33:35,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:33:35,161 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1129 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:35,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 484 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:33:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-11-22 15:33:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 357. [2021-11-22 15:33:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3381502890173411) internal successors, (463), 356 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 463 transitions. [2021-11-22 15:33:35,214 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 463 transitions. Word has length 64 [2021-11-22 15:33:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:35,215 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 463 transitions. [2021-11-22 15:33:35,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 463 transitions. [2021-11-22 15:33:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 15:33:35,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:35,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:35,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:33:35,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash -295025225, now seen corresponding path program 1 times [2021-11-22 15:33:35,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229743747] [2021-11-22 15:33:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:35,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:35,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:35,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229743747] [2021-11-22 15:33:35,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229743747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:35,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:35,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:35,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235003649] [2021-11-22 15:33:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:35,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:35,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:35,422 INFO L87 Difference]: Start difference. First operand 357 states and 463 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:36,342 INFO L93 Difference]: Finished difference Result 883 states and 1207 transitions. [2021-11-22 15:33:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:36,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-22 15:33:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:36,348 INFO L225 Difference]: With dead ends: 883 [2021-11-22 15:33:36,348 INFO L226 Difference]: Without dead ends: 774 [2021-11-22 15:33:36,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:33:36,350 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1908 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:36,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 985 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:33:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-22 15:33:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-11-22 15:33:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3352601156069364) internal successors, (462), 356 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 462 transitions. [2021-11-22 15:33:36,401 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 462 transitions. Word has length 65 [2021-11-22 15:33:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:36,401 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 462 transitions. [2021-11-22 15:33:36,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 462 transitions. [2021-11-22 15:33:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:33:36,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:36,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:36,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:33:36,403 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash -168692467, now seen corresponding path program 1 times [2021-11-22 15:33:36,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:36,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200503046] [2021-11-22 15:33:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:36,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:36,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:36,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200503046] [2021-11-22 15:33:36,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200503046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:36,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:36,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:36,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404095743] [2021-11-22 15:33:36,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:36,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:36,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:36,551 INFO L87 Difference]: Start difference. First operand 357 states and 462 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:37,444 INFO L93 Difference]: Finished difference Result 814 states and 1101 transitions. [2021-11-22 15:33:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:33:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:37,450 INFO L225 Difference]: With dead ends: 814 [2021-11-22 15:33:37,450 INFO L226 Difference]: Without dead ends: 795 [2021-11-22 15:33:37,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:33:37,453 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 1321 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:37,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1321 Valid, 1277 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:33:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-22 15:33:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 357. [2021-11-22 15:33:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.329479768786127) internal successors, (460), 356 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 460 transitions. [2021-11-22 15:33:37,501 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 460 transitions. Word has length 66 [2021-11-22 15:33:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:37,501 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 460 transitions. [2021-11-22 15:33:37,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 460 transitions. [2021-11-22 15:33:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:33:37,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:37,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:37,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:33:37,503 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1424145869, now seen corresponding path program 1 times [2021-11-22 15:33:37,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:37,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597466759] [2021-11-22 15:33:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:37,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:37,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:37,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597466759] [2021-11-22 15:33:37,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597466759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:37,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:37,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:37,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711372724] [2021-11-22 15:33:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:37,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:37,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:37,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:37,680 INFO L87 Difference]: Start difference. First operand 357 states and 460 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:38,663 INFO L93 Difference]: Finished difference Result 780 states and 1048 transitions. [2021-11-22 15:33:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:38,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:33:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:38,670 INFO L225 Difference]: With dead ends: 780 [2021-11-22 15:33:38,670 INFO L226 Difference]: Without dead ends: 774 [2021-11-22 15:33:38,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:33:38,671 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1809 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:38,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1809 Valid, 1061 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:33:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-22 15:33:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-11-22 15:33:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.323699421965318) internal successors, (458), 356 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 458 transitions. [2021-11-22 15:33:38,723 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 458 transitions. Word has length 66 [2021-11-22 15:33:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:38,723 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 458 transitions. [2021-11-22 15:33:38,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 458 transitions. [2021-11-22 15:33:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:33:38,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:38,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:38,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:33:38,726 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash -155488627, now seen corresponding path program 1 times [2021-11-22 15:33:38,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:38,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664757402] [2021-11-22 15:33:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:38,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:38,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:38,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664757402] [2021-11-22 15:33:38,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664757402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:38,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:38,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:38,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216816686] [2021-11-22 15:33:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:38,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:38,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:38,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:38,857 INFO L87 Difference]: Start difference. First operand 357 states and 458 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:39,532 INFO L93 Difference]: Finished difference Result 701 states and 948 transitions. [2021-11-22 15:33:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:33:39,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:33:39,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:39,537 INFO L225 Difference]: With dead ends: 701 [2021-11-22 15:33:39,537 INFO L226 Difference]: Without dead ends: 524 [2021-11-22 15:33:39,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:33:39,538 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1346 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:39,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 909 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:33:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-22 15:33:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 357. [2021-11-22 15:33:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3179190751445087) internal successors, (456), 356 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 456 transitions. [2021-11-22 15:33:39,591 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 456 transitions. Word has length 66 [2021-11-22 15:33:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:39,592 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 456 transitions. [2021-11-22 15:33:39,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 456 transitions. [2021-11-22 15:33:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:33:39,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:39,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:39,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:33:39,594 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash -131812051, now seen corresponding path program 1 times [2021-11-22 15:33:39,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:39,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476913516] [2021-11-22 15:33:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:39,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:39,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476913516] [2021-11-22 15:33:39,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476913516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:39,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:39,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:39,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934858938] [2021-11-22 15:33:39,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:39,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:39,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:39,744 INFO L87 Difference]: Start difference. First operand 357 states and 456 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:40,738 INFO L93 Difference]: Finished difference Result 886 states and 1203 transitions. [2021-11-22 15:33:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:40,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:33:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:40,744 INFO L225 Difference]: With dead ends: 886 [2021-11-22 15:33:40,744 INFO L226 Difference]: Without dead ends: 774 [2021-11-22 15:33:40,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:33:40,746 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1785 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:40,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 1072 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:33:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-22 15:33:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-11-22 15:33:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3150289017341041) internal successors, (455), 356 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 455 transitions. [2021-11-22 15:33:40,803 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 455 transitions. Word has length 66 [2021-11-22 15:33:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:40,803 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 455 transitions. [2021-11-22 15:33:40,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 455 transitions. [2021-11-22 15:33:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:33:40,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:40,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:40,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:33:40,806 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2058619373, now seen corresponding path program 1 times [2021-11-22 15:33:40,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957240718] [2021-11-22 15:33:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:40,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:40,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:40,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957240718] [2021-11-22 15:33:40,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957240718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:40,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:40,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:40,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335731736] [2021-11-22 15:33:40,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:40,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:40,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:40,971 INFO L87 Difference]: Start difference. First operand 357 states and 455 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:41,935 INFO L93 Difference]: Finished difference Result 920 states and 1252 transitions. [2021-11-22 15:33:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:41,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:33:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:41,941 INFO L225 Difference]: With dead ends: 920 [2021-11-22 15:33:41,941 INFO L226 Difference]: Without dead ends: 795 [2021-11-22 15:33:41,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:33:41,944 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1251 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:41,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 1428 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:33:41,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-22 15:33:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 357. [2021-11-22 15:33:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3121387283236994) internal successors, (454), 356 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 454 transitions. [2021-11-22 15:33:42,014 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 454 transitions. Word has length 66 [2021-11-22 15:33:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:42,015 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 454 transitions. [2021-11-22 15:33:42,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 454 transitions. [2021-11-22 15:33:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:33:42,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:42,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:42,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:33:42,018 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1833305997, now seen corresponding path program 1 times [2021-11-22 15:33:42,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:42,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613192625] [2021-11-22 15:33:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:42,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:42,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:42,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613192625] [2021-11-22 15:33:42,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613192625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:42,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:42,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:42,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728468678] [2021-11-22 15:33:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:42,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:42,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:42,172 INFO L87 Difference]: Start difference. First operand 357 states and 454 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:43,078 INFO L93 Difference]: Finished difference Result 780 states and 1042 transitions. [2021-11-22 15:33:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:33:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:43,084 INFO L225 Difference]: With dead ends: 780 [2021-11-22 15:33:43,084 INFO L226 Difference]: Without dead ends: 774 [2021-11-22 15:33:43,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:33:43,085 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1873 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:43,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 1201 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:33:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-22 15:33:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-11-22 15:33:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3092485549132948) internal successors, (453), 356 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 453 transitions. [2021-11-22 15:33:43,152 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 453 transitions. Word has length 66 [2021-11-22 15:33:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:43,152 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 453 transitions. [2021-11-22 15:33:43,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 453 transitions. [2021-11-22 15:33:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:33:43,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:43,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:43,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:33:43,154 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash 817551922, now seen corresponding path program 1 times [2021-11-22 15:33:43,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:43,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911956505] [2021-11-22 15:33:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:43,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:43,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:43,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911956505] [2021-11-22 15:33:43,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911956505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:43,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:43,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:33:43,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201106482] [2021-11-22 15:33:43,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:43,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:33:43,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:43,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:33:43,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:33:43,687 INFO L87 Difference]: Start difference. First operand 357 states and 453 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:45,112 INFO L93 Difference]: Finished difference Result 981 states and 1286 transitions. [2021-11-22 15:33:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:33:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:45,118 INFO L225 Difference]: With dead ends: 981 [2021-11-22 15:33:45,119 INFO L226 Difference]: Without dead ends: 873 [2021-11-22 15:33:45,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-22 15:33:45,123 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1485 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:45,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 2516 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:33:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-22 15:33:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 347. [2021-11-22 15:33:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3035714285714286) internal successors, (438), 346 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 438 transitions. [2021-11-22 15:33:45,199 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 438 transitions. Word has length 67 [2021-11-22 15:33:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:45,200 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 438 transitions. [2021-11-22 15:33:45,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 438 transitions. [2021-11-22 15:33:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:33:45,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:45,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:45,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:33:45,202 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash 167509874, now seen corresponding path program 1 times [2021-11-22 15:33:45,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:45,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535905781] [2021-11-22 15:33:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:45,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:45,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:45,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535905781] [2021-11-22 15:33:45,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535905781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:45,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:45,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:33:45,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876274540] [2021-11-22 15:33:45,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:45,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:33:45,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:45,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:33:45,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:33:45,620 INFO L87 Difference]: Start difference. First operand 347 states and 438 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:47,687 INFO L93 Difference]: Finished difference Result 1607 states and 2219 transitions. [2021-11-22 15:33:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 15:33:47,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:33:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:47,698 INFO L225 Difference]: With dead ends: 1607 [2021-11-22 15:33:47,698 INFO L226 Difference]: Without dead ends: 1500 [2021-11-22 15:33:47,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-22 15:33:47,701 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 2373 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:47,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 3379 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:33:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-22 15:33:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 346. [2021-11-22 15:33:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.3014925373134327) internal successors, (436), 345 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 436 transitions. [2021-11-22 15:33:47,801 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 436 transitions. Word has length 67 [2021-11-22 15:33:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:47,802 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 436 transitions. [2021-11-22 15:33:47,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 436 transitions. [2021-11-22 15:33:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:33:47,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:47,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:47,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:33:47,807 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash 620991698, now seen corresponding path program 1 times [2021-11-22 15:33:47,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:47,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674249688] [2021-11-22 15:33:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:47,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:48,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674249688] [2021-11-22 15:33:48,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674249688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:48,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:48,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 15:33:48,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024886144] [2021-11-22 15:33:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:33:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:33:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:33:48,274 INFO L87 Difference]: Start difference. First operand 346 states and 436 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:49,275 INFO L93 Difference]: Finished difference Result 888 states and 1180 transitions. [2021-11-22 15:33:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:33:49,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:33:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:49,280 INFO L225 Difference]: With dead ends: 888 [2021-11-22 15:33:49,280 INFO L226 Difference]: Without dead ends: 713 [2021-11-22 15:33:49,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:33:49,282 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1404 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:49,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 1778 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:33:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-22 15:33:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 277. [2021-11-22 15:33:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 270 states have (on average 1.3111111111111111) internal successors, (354), 276 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 354 transitions. [2021-11-22 15:33:49,371 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 354 transitions. Word has length 67 [2021-11-22 15:33:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:49,372 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 354 transitions. [2021-11-22 15:33:49,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 354 transitions. [2021-11-22 15:33:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 15:33:49,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:49,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:49,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:33:49,374 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1968382194, now seen corresponding path program 1 times [2021-11-22 15:33:49,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699162801] [2021-11-22 15:33:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:49,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:49,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699162801] [2021-11-22 15:33:49,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699162801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:49,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:49,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 15:33:49,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393356856] [2021-11-22 15:33:49,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:49,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 15:33:49,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 15:33:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:33:49,936 INFO L87 Difference]: Start difference. First operand 277 states and 354 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:51,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:51,662 INFO L93 Difference]: Finished difference Result 724 states and 959 transitions. [2021-11-22 15:33:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:33:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 15:33:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:51,666 INFO L225 Difference]: With dead ends: 724 [2021-11-22 15:33:51,666 INFO L226 Difference]: Without dead ends: 614 [2021-11-22 15:33:51,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2021-11-22 15:33:51,668 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 1652 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:51,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1652 Valid, 1988 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:33:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-22 15:33:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 275. [2021-11-22 15:33:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 268 states have (on average 1.3059701492537314) internal successors, (350), 274 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 350 transitions. [2021-11-22 15:33:51,747 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 350 transitions. Word has length 68 [2021-11-22 15:33:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:51,747 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 350 transitions. [2021-11-22 15:33:51,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 350 transitions. [2021-11-22 15:33:51,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 15:33:51,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:51,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:51,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:33:51,749 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1424994738, now seen corresponding path program 1 times [2021-11-22 15:33:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:51,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648924108] [2021-11-22 15:33:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:51,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:52,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:52,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648924108] [2021-11-22 15:33:52,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648924108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:52,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:52,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:33:52,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660884754] [2021-11-22 15:33:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:52,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:33:52,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:33:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:33:52,165 INFO L87 Difference]: Start difference. First operand 275 states and 350 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:53,390 INFO L93 Difference]: Finished difference Result 727 states and 959 transitions. [2021-11-22 15:33:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:33:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 15:33:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:53,396 INFO L225 Difference]: With dead ends: 727 [2021-11-22 15:33:53,396 INFO L226 Difference]: Without dead ends: 723 [2021-11-22 15:33:53,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-22 15:33:53,398 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1152 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:53,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 1788 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:33:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-22 15:33:53,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 271. [2021-11-22 15:33:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 265 states have (on average 1.3056603773584905) internal successors, (346), 270 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2021-11-22 15:33:53,466 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 68 [2021-11-22 15:33:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:53,467 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2021-11-22 15:33:53,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2021-11-22 15:33:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 15:33:53,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:53,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:53,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:33:53,469 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1956272974, now seen corresponding path program 1 times [2021-11-22 15:33:53,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:53,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943920015] [2021-11-22 15:33:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:53,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:54,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:54,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943920015] [2021-11-22 15:33:54,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943920015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:54,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:54,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-22 15:33:54,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904789380] [2021-11-22 15:33:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:54,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 15:33:54,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 15:33:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:33:54,136 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:55,743 INFO L93 Difference]: Finished difference Result 305 states and 381 transitions. [2021-11-22 15:33:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 15:33:55,744 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 15:33:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:55,746 INFO L225 Difference]: With dead ends: 305 [2021-11-22 15:33:55,746 INFO L226 Difference]: Without dead ends: 298 [2021-11-22 15:33:55,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 15:33:55,757 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 408 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:55,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 2278 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:33:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-22 15:33:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 278. [2021-11-22 15:33:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.3051470588235294) internal successors, (355), 277 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2021-11-22 15:33:55,838 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 68 [2021-11-22 15:33:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:55,839 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2021-11-22 15:33:55,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2021-11-22 15:33:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:33:55,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:55,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:55,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:33:55,841 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 859380364, now seen corresponding path program 1 times [2021-11-22 15:33:55,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:55,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765377793] [2021-11-22 15:33:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:55,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:56,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:56,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765377793] [2021-11-22 15:33:56,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765377793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:56,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:56,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:33:56,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647816167] [2021-11-22 15:33:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:56,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:33:56,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:33:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:33:56,195 INFO L87 Difference]: Start difference. First operand 278 states and 355 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:56,855 INFO L93 Difference]: Finished difference Result 455 states and 599 transitions. [2021-11-22 15:33:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:33:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 15:33:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:56,859 INFO L225 Difference]: With dead ends: 455 [2021-11-22 15:33:56,859 INFO L226 Difference]: Without dead ends: 417 [2021-11-22 15:33:56,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:33:56,860 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 711 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:56,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2011 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:33:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-22 15:33:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 240. [2021-11-22 15:33:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 239 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 310 transitions. [2021-11-22 15:33:56,929 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 310 transitions. Word has length 69 [2021-11-22 15:33:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:56,929 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 310 transitions. [2021-11-22 15:33:56,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 310 transitions. [2021-11-22 15:33:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:33:56,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:56,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:56,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:33:56,930 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1452889883, now seen corresponding path program 1 times [2021-11-22 15:33:56,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:56,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141739495] [2021-11-22 15:33:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:56,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:57,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:57,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141739495] [2021-11-22 15:33:57,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141739495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:57,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:57,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:33:57,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369377521] [2021-11-22 15:33:57,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:57,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:33:57,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:33:57,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:33:57,299 INFO L87 Difference]: Start difference. First operand 240 states and 310 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:58,295 INFO L93 Difference]: Finished difference Result 786 states and 1085 transitions. [2021-11-22 15:33:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:33:58,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 15:33:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:58,308 INFO L225 Difference]: With dead ends: 786 [2021-11-22 15:33:58,309 INFO L226 Difference]: Without dead ends: 659 [2021-11-22 15:33:58,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-22 15:33:58,312 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 937 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:58,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 2265 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:33:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-22 15:33:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 219. [2021-11-22 15:33:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.304147465437788) internal successors, (283), 218 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2021-11-22 15:33:58,385 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 69 [2021-11-22 15:33:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:58,385 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2021-11-22 15:33:58,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2021-11-22 15:33:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 15:33:58,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:58,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:33:58,386 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash -957086542, now seen corresponding path program 1 times [2021-11-22 15:33:58,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:58,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141029234] [2021-11-22 15:33:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:58,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:58,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:58,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141029234] [2021-11-22 15:33:58,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141029234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:58,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:58,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:33:58,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070839419] [2021-11-22 15:33:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:58,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:33:58,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:33:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:33:58,538 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:59,132 INFO L93 Difference]: Finished difference Result 519 states and 701 transitions. [2021-11-22 15:33:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:33:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 15:33:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:59,135 INFO L225 Difference]: With dead ends: 519 [2021-11-22 15:33:59,135 INFO L226 Difference]: Without dead ends: 379 [2021-11-22 15:33:59,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:33:59,141 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 614 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:59,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 627 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:33:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-22 15:33:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 219. [2021-11-22 15:33:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.294930875576037) internal successors, (281), 218 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2021-11-22 15:33:59,234 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 70 [2021-11-22 15:33:59,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:59,234 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2021-11-22 15:33:59,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2021-11-22 15:33:59,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 15:33:59,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:59,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:59,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:33:59,237 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:33:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash -918116841, now seen corresponding path program 1 times [2021-11-22 15:33:59,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:59,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874375461] [2021-11-22 15:33:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:59,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:00,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874375461] [2021-11-22 15:34:00,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874375461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:00,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:00,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-22 15:34:00,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484480902] [2021-11-22 15:34:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:00,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-22 15:34:00,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-22 15:34:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-11-22 15:34:00,030 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:02,438 INFO L93 Difference]: Finished difference Result 812 states and 1137 transitions. [2021-11-22 15:34:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-22 15:34:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 15:34:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:02,443 INFO L225 Difference]: With dead ends: 812 [2021-11-22 15:34:02,444 INFO L226 Difference]: Without dead ends: 806 [2021-11-22 15:34:02,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=272, Invalid=1450, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 15:34:02,445 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 842 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:02,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 3295 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 15:34:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-11-22 15:34:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 232. [2021-11-22 15:34:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 1.291304347826087) internal successors, (297), 231 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 297 transitions. [2021-11-22 15:34:02,541 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 297 transitions. Word has length 72 [2021-11-22 15:34:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:02,542 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 297 transitions. [2021-11-22 15:34:02,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 297 transitions. [2021-11-22 15:34:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 15:34:02,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:02,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:02,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:34:02,544 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 370177890, now seen corresponding path program 1 times [2021-11-22 15:34:02,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:02,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673719469] [2021-11-22 15:34:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:02,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:02,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673719469] [2021-11-22 15:34:02,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673719469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:02,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:02,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:34:02,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627234269] [2021-11-22 15:34:02,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:02,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:34:02,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:34:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:34:02,986 INFO L87 Difference]: Start difference. First operand 232 states and 297 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:04,433 INFO L93 Difference]: Finished difference Result 1064 states and 1499 transitions. [2021-11-22 15:34:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 15:34:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-22 15:34:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:04,441 INFO L225 Difference]: With dead ends: 1064 [2021-11-22 15:34:04,442 INFO L226 Difference]: Without dead ends: 1058 [2021-11-22 15:34:04,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-22 15:34:04,443 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1171 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:04,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 2466 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:34:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-11-22 15:34:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 213. [2021-11-22 15:34:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.2924528301886793) internal successors, (274), 212 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2021-11-22 15:34:04,544 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 73 [2021-11-22 15:34:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:04,544 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2021-11-22 15:34:04,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2021-11-22 15:34:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 15:34:04,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:04,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:04,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:34:04,547 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1364481581, now seen corresponding path program 1 times [2021-11-22 15:34:04,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:04,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562560351] [2021-11-22 15:34:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:04,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:04,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:04,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562560351] [2021-11-22 15:34:04,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562560351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:04,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:04,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:04,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30112485] [2021-11-22 15:34:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:04,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:04,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:04,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:04,659 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:05,225 INFO L93 Difference]: Finished difference Result 1061 states and 1538 transitions. [2021-11-22 15:34:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:05,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-22 15:34:05,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:05,231 INFO L225 Difference]: With dead ends: 1061 [2021-11-22 15:34:05,231 INFO L226 Difference]: Without dead ends: 955 [2021-11-22 15:34:05,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:34:05,233 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 906 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:05,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 955 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-11-22 15:34:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 317. [2021-11-22 15:34:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3512658227848102) internal successors, (427), 316 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 427 transitions. [2021-11-22 15:34:05,384 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 427 transitions. Word has length 96 [2021-11-22 15:34:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:05,385 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 427 transitions. [2021-11-22 15:34:05,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 427 transitions. [2021-11-22 15:34:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:34:05,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:05,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:05,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:34:05,387 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:05,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1426852022, now seen corresponding path program 1 times [2021-11-22 15:34:05,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:05,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420482664] [2021-11-22 15:34:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:05,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:05,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:05,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420482664] [2021-11-22 15:34:05,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420482664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:05,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:05,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:05,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929840608] [2021-11-22 15:34:05,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:05,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:05,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:05,475 INFO L87 Difference]: Start difference. First operand 317 states and 427 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:05,988 INFO L93 Difference]: Finished difference Result 1263 states and 1825 transitions. [2021-11-22 15:34:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:34:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:05,994 INFO L225 Difference]: With dead ends: 1263 [2021-11-22 15:34:05,994 INFO L226 Difference]: Without dead ends: 1053 [2021-11-22 15:34:05,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:05,996 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 656 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:05,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 670 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-11-22 15:34:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 525. [2021-11-22 15:34:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.4026717557251909) internal successors, (735), 524 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 735 transitions. [2021-11-22 15:34:06,268 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 735 transitions. Word has length 98 [2021-11-22 15:34:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:06,269 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 735 transitions. [2021-11-22 15:34:06,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 735 transitions. [2021-11-22 15:34:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:34:06,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:06,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:06,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:34:06,272 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:06,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:06,272 INFO L85 PathProgramCache]: Analyzing trace with hash 645902315, now seen corresponding path program 1 times [2021-11-22 15:34:06,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:06,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133516583] [2021-11-22 15:34:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:06,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:06,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:06,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133516583] [2021-11-22 15:34:06,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133516583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:06,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:06,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:06,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33082977] [2021-11-22 15:34:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:06,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:06,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:06,419 INFO L87 Difference]: Start difference. First operand 525 states and 735 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:06,734 INFO L93 Difference]: Finished difference Result 945 states and 1355 transitions. [2021-11-22 15:34:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:06,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:34:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:06,739 INFO L225 Difference]: With dead ends: 945 [2021-11-22 15:34:06,739 INFO L226 Difference]: Without dead ends: 527 [2021-11-22 15:34:06,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:34:06,743 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 369 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:06,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 387 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-11-22 15:34:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525. [2021-11-22 15:34:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.3950381679389312) internal successors, (731), 524 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 731 transitions. [2021-11-22 15:34:06,980 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 731 transitions. Word has length 98 [2021-11-22 15:34:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:06,981 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 731 transitions. [2021-11-22 15:34:06,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 731 transitions. [2021-11-22 15:34:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:34:06,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:06,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:06,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:34:06,984 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash 579408803, now seen corresponding path program 1 times [2021-11-22 15:34:06,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:06,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941418540] [2021-11-22 15:34:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:06,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:07,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:07,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941418540] [2021-11-22 15:34:07,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941418540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:07,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:07,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:07,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181538520] [2021-11-22 15:34:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:07,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:07,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:07,036 INFO L87 Difference]: Start difference. First operand 525 states and 731 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:07,444 INFO L93 Difference]: Finished difference Result 1309 states and 1873 transitions. [2021-11-22 15:34:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:34:07,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:07,450 INFO L225 Difference]: With dead ends: 1309 [2021-11-22 15:34:07,450 INFO L226 Difference]: Without dead ends: 891 [2021-11-22 15:34:07,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:07,452 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 67 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:07,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 374 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-11-22 15:34:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2021-11-22 15:34:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 1.3975225225225225) internal successors, (1241), 888 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1241 transitions. [2021-11-22 15:34:07,867 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1241 transitions. Word has length 98 [2021-11-22 15:34:07,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:07,867 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1241 transitions. [2021-11-22 15:34:07,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1241 transitions. [2021-11-22 15:34:07,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:34:07,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:07,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:07,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:34:07,870 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:07,871 INFO L85 PathProgramCache]: Analyzing trace with hash 628880202, now seen corresponding path program 1 times [2021-11-22 15:34:07,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:07,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847072898] [2021-11-22 15:34:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:07,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:07,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847072898] [2021-11-22 15:34:07,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847072898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:07,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:07,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:07,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038982364] [2021-11-22 15:34:07,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:07,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:07,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:07,951 INFO L87 Difference]: Start difference. First operand 889 states and 1241 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:08,966 INFO L93 Difference]: Finished difference Result 2655 states and 3782 transitions. [2021-11-22 15:34:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:34:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:08,976 INFO L225 Difference]: With dead ends: 2655 [2021-11-22 15:34:08,976 INFO L226 Difference]: Without dead ends: 2263 [2021-11-22 15:34:08,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:08,979 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 623 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:08,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 684 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:08,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-22 15:34:09,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1475. [2021-11-22 15:34:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 1.4118046132971507) internal successors, (2081), 1474 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2081 transitions. [2021-11-22 15:34:09,786 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2081 transitions. Word has length 98 [2021-11-22 15:34:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:09,787 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2081 transitions. [2021-11-22 15:34:09,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2081 transitions. [2021-11-22 15:34:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:34:09,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:09,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:09,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:34:09,790 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1790937782, now seen corresponding path program 1 times [2021-11-22 15:34:09,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:09,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279636022] [2021-11-22 15:34:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:09,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:09,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:09,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279636022] [2021-11-22 15:34:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279636022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:09,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:09,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:09,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939538501] [2021-11-22 15:34:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:09,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:09,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:09,876 INFO L87 Difference]: Start difference. First operand 1475 states and 2081 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:11,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:11,065 INFO L93 Difference]: Finished difference Result 3045 states and 4342 transitions. [2021-11-22 15:34:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:11,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:34:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:11,075 INFO L225 Difference]: With dead ends: 3045 [2021-11-22 15:34:11,076 INFO L226 Difference]: Without dead ends: 2653 [2021-11-22 15:34:11,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:11,077 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 592 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:11,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 742 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2021-11-22 15:34:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 1865. [2021-11-22 15:34:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1864 states have (on average 1.4168454935622317) internal successors, (2641), 1864 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2641 transitions. [2021-11-22 15:34:11,971 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2641 transitions. Word has length 98 [2021-11-22 15:34:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:11,971 INFO L470 AbstractCegarLoop]: Abstraction has 1865 states and 2641 transitions. [2021-11-22 15:34:11,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2641 transitions. [2021-11-22 15:34:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:34:11,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:11,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:11,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:34:11,974 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash -686393014, now seen corresponding path program 1 times [2021-11-22 15:34:11,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:11,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806073274] [2021-11-22 15:34:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:11,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:12,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806073274] [2021-11-22 15:34:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806073274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:12,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:12,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:12,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569301375] [2021-11-22 15:34:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:12,061 INFO L87 Difference]: Start difference. First operand 1865 states and 2641 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:13,567 INFO L93 Difference]: Finished difference Result 3435 states and 4902 transitions. [2021-11-22 15:34:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:34:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:13,588 INFO L225 Difference]: With dead ends: 3435 [2021-11-22 15:34:13,588 INFO L226 Difference]: Without dead ends: 3043 [2021-11-22 15:34:13,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:13,590 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 649 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:13,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 773 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-11-22 15:34:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2255. [2021-11-22 15:34:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2254 states have (on average 1.4201419698314108) internal successors, (3201), 2254 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3201 transitions. [2021-11-22 15:34:14,699 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3201 transitions. Word has length 98 [2021-11-22 15:34:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:14,700 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 3201 transitions. [2021-11-22 15:34:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3201 transitions. [2021-11-22 15:34:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 15:34:14,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:14,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:14,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:34:14,703 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1897778033, now seen corresponding path program 1 times [2021-11-22 15:34:14,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075528886] [2021-11-22 15:34:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:14,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:14,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:14,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075528886] [2021-11-22 15:34:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075528886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:14,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:14,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:14,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560622330] [2021-11-22 15:34:14,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:14,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:14,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:14,764 INFO L87 Difference]: Start difference. First operand 2255 states and 3201 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:16,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:16,360 INFO L93 Difference]: Finished difference Result 5715 states and 8137 transitions. [2021-11-22 15:34:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-22 15:34:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:16,372 INFO L225 Difference]: With dead ends: 5715 [2021-11-22 15:34:16,372 INFO L226 Difference]: Without dead ends: 3567 [2021-11-22 15:34:16,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:16,376 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 78 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:16,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 345 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2021-11-22 15:34:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3389. [2021-11-22 15:34:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 3388 states have (on average 1.406434474616293) internal successors, (4765), 3388 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 4765 transitions. [2021-11-22 15:34:17,959 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 4765 transitions. Word has length 99 [2021-11-22 15:34:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:17,959 INFO L470 AbstractCegarLoop]: Abstraction has 3389 states and 4765 transitions. [2021-11-22 15:34:17,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 4765 transitions. [2021-11-22 15:34:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 15:34:17,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:17,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:17,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:34:17,962 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash 642959826, now seen corresponding path program 1 times [2021-11-22 15:34:17,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:17,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076234098] [2021-11-22 15:34:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:17,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:18,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:18,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076234098] [2021-11-22 15:34:18,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076234098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:18,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:18,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:18,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528215951] [2021-11-22 15:34:18,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:18,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:18,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:18,019 INFO L87 Difference]: Start difference. First operand 3389 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:20,975 INFO L93 Difference]: Finished difference Result 9689 states and 13601 transitions. [2021-11-22 15:34:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-22 15:34:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:20,988 INFO L225 Difference]: With dead ends: 9689 [2021-11-22 15:34:20,988 INFO L226 Difference]: Without dead ends: 6407 [2021-11-22 15:34:20,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:20,994 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 71 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:20,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:21,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2021-11-22 15:34:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 6141. [2021-11-22 15:34:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 6140 states have (on average 1.3933224755700326) internal successors, (8555), 6140 states have internal predecessors, (8555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 8555 transitions. [2021-11-22 15:34:23,531 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 8555 transitions. Word has length 100 [2021-11-22 15:34:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:23,532 INFO L470 AbstractCegarLoop]: Abstraction has 6141 states and 8555 transitions. [2021-11-22 15:34:23,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 8555 transitions. [2021-11-22 15:34:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 15:34:23,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:23,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:23,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:34:23,534 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:23,535 INFO L85 PathProgramCache]: Analyzing trace with hash -563977445, now seen corresponding path program 1 times [2021-11-22 15:34:23,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:23,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295020720] [2021-11-22 15:34:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:23,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:23,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:23,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295020720] [2021-11-22 15:34:23,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295020720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:23,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:23,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:23,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043252714] [2021-11-22 15:34:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:23,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:23,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:23,585 INFO L87 Difference]: Start difference. First operand 6141 states and 8555 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:28,514 INFO L93 Difference]: Finished difference Result 17681 states and 24509 transitions. [2021-11-22 15:34:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:28,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-22 15:34:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:28,541 INFO L225 Difference]: With dead ends: 17681 [2021-11-22 15:34:28,542 INFO L226 Difference]: Without dead ends: 11647 [2021-11-22 15:34:28,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:28,551 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 64 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:28,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11647 states. [2021-11-22 15:34:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11117. [2021-11-22 15:34:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11117 states, 11116 states have (on average 1.3743252968693775) internal successors, (15277), 11116 states have internal predecessors, (15277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11117 states to 11117 states and 15277 transitions. [2021-11-22 15:34:33,433 INFO L78 Accepts]: Start accepts. Automaton has 11117 states and 15277 transitions. Word has length 101 [2021-11-22 15:34:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:33,434 INFO L470 AbstractCegarLoop]: Abstraction has 11117 states and 15277 transitions. [2021-11-22 15:34:33,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 11117 states and 15277 transitions. [2021-11-22 15:34:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 15:34:33,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:33,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:33,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 15:34:33,436 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 573353758, now seen corresponding path program 1 times [2021-11-22 15:34:33,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:33,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432815481] [2021-11-22 15:34:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:33,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:33,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:33,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432815481] [2021-11-22 15:34:33,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432815481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:33,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:33,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:33,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984171160] [2021-11-22 15:34:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:33,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:33,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:33,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:33,486 INFO L87 Difference]: Start difference. First operand 11117 states and 15277 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:42,423 INFO L93 Difference]: Finished difference Result 32081 states and 43751 transitions. [2021-11-22 15:34:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-22 15:34:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:42,466 INFO L225 Difference]: With dead ends: 32081 [2021-11-22 15:34:42,467 INFO L226 Difference]: Without dead ends: 21071 [2021-11-22 15:34:42,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:42,484 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 54 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:42,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 345 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21071 states. [2021-11-22 15:34:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21071 to 20013. [2021-11-22 15:34:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20013 states, 20012 states have (on average 1.349440335798521) internal successors, (27005), 20012 states have internal predecessors, (27005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20013 states to 20013 states and 27005 transitions. [2021-11-22 15:34:51,328 INFO L78 Accepts]: Start accepts. Automaton has 20013 states and 27005 transitions. Word has length 102 [2021-11-22 15:34:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:51,329 INFO L470 AbstractCegarLoop]: Abstraction has 20013 states and 27005 transitions. [2021-11-22 15:34:51,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 20013 states and 27005 transitions. [2021-11-22 15:34:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 15:34:51,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:51,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:51,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 15:34:51,330 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:34:51,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:51,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1488377255, now seen corresponding path program 1 times [2021-11-22 15:34:51,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:51,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410220186] [2021-11-22 15:34:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:51,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:51,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:51,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410220186] [2021-11-22 15:34:51,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410220186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:51,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:51,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:34:51,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934423653] [2021-11-22 15:34:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:51,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:34:51,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:34:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:51,413 INFO L87 Difference]: Start difference. First operand 20013 states and 27005 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:05,241 INFO L93 Difference]: Finished difference Result 31023 states and 41659 transitions. [2021-11-22 15:35:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:35:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-22 15:35:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:05,284 INFO L225 Difference]: With dead ends: 31023 [2021-11-22 15:35:05,284 INFO L226 Difference]: Without dead ends: 31021 [2021-11-22 15:35:05,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:35:05,291 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 260 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:05,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 822 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31021 states. [2021-11-22 15:35:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31021 to 20493. [2021-11-22 15:35:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20493 states, 20492 states have (on average 1.3318856138981066) internal successors, (27293), 20492 states have internal predecessors, (27293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20493 states to 20493 states and 27293 transitions. [2021-11-22 15:35:14,950 INFO L78 Accepts]: Start accepts. Automaton has 20493 states and 27293 transitions. Word has length 103 [2021-11-22 15:35:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:14,950 INFO L470 AbstractCegarLoop]: Abstraction has 20493 states and 27293 transitions. [2021-11-22 15:35:14,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 20493 states and 27293 transitions. [2021-11-22 15:35:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 15:35:14,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:14,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:14,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 15:35:14,951 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:35:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash -108390554, now seen corresponding path program 1 times [2021-11-22 15:35:14,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:14,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61931160] [2021-11-22 15:35:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:14,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:14,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:14,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61931160] [2021-11-22 15:35:14,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61931160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:14,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:14,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:14,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968349594] [2021-11-22 15:35:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:14,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:14,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:15,000 INFO L87 Difference]: Start difference. First operand 20493 states and 27293 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:25,201 INFO L93 Difference]: Finished difference Result 41521 states and 55335 transitions. [2021-11-22 15:35:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-22 15:35:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:25,231 INFO L225 Difference]: With dead ends: 41521 [2021-11-22 15:35:25,231 INFO L226 Difference]: Without dead ends: 21135 [2021-11-22 15:35:25,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:25,258 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 86 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:25,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 289 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21135 states. [2021-11-22 15:35:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21135 to 21133. [2021-11-22 15:35:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21133 states, 21132 states have (on average 1.3150198750709825) internal successors, (27789), 21132 states have internal predecessors, (27789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21133 states to 21133 states and 27789 transitions. [2021-11-22 15:35:35,297 INFO L78 Accepts]: Start accepts. Automaton has 21133 states and 27789 transitions. Word has length 103 [2021-11-22 15:35:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:35,298 INFO L470 AbstractCegarLoop]: Abstraction has 21133 states and 27789 transitions. [2021-11-22 15:35:35,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 21133 states and 27789 transitions. [2021-11-22 15:35:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 15:35:35,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:35,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:35,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-22 15:35:35,306 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:35:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1221771837, now seen corresponding path program 1 times [2021-11-22 15:35:35,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:35,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407951089] [2021-11-22 15:35:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:35,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:35,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407951089] [2021-11-22 15:35:35,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407951089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:35:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742945211] [2021-11-22 15:35:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:35,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:35:35,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:35,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:35:35,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842df7dd-a30a-494d-a43a-fc4cc39ed350/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:35:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:35,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:35:35,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:37,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:39,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742945211] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:35:39,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:35:39,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2021-11-22 15:35:39,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188361356] [2021-11-22 15:35:39,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:35:39,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-22 15:35:39,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:39,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-22 15:35:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-11-22 15:35:39,965 INFO L87 Difference]: Start difference. First operand 21133 states and 27789 transitions. Second operand has 30 states, 30 states have (on average 11.733333333333333) internal successors, (352), 29 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)