./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52cbb0c1391c9e840599beece58e1ecbc8d18028ef540ea98f759da7158f4609 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:13:49,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:13:49,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:13:49,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:13:49,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:13:49,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:13:49,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:13:49,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:13:49,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:13:49,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:13:49,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:13:49,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:13:49,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:13:49,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:13:49,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:13:49,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:13:49,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:13:49,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:13:49,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:13:49,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:13:49,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:13:49,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:13:49,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:13:49,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:13:49,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:13:49,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:13:49,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:13:49,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:13:49,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:13:49,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:13:49,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:13:49,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:13:49,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:13:49,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:13:49,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:13:49,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:13:49,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:13:49,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:13:49,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:13:49,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:13:49,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:13:49,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:13:49,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:13:49,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:13:49,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:13:49,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:13:49,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:13:49,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:13:49,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:13:49,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:13:49,291 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:13:49,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:13:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:13:49,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:13:49,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:13:49,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:13:49,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:13:49,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:13:49,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:13:49,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:13:49,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:13:49,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:13:49,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:13:49,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:13:49,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:13:49,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:13:49,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:13:49,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:13:49,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:13:49,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:13:49,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:13:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:13:49,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:13:49,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:13:49,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:13:49,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:13:49,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52cbb0c1391c9e840599beece58e1ecbc8d18028ef540ea98f759da7158f4609 [2021-12-22 12:13:49,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:13:49,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:13:49,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:13:49,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:13:49,594 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:13:49,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-22 12:13:49,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7299e34a/3c0c7bcea3eb4a30865b01cf522fdac3/FLAGd7bc13183 [2021-12-22 12:13:50,293 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:13:50,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-22 12:13:50,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7299e34a/3c0c7bcea3eb4a30865b01cf522fdac3/FLAGd7bc13183 [2021-12-22 12:13:50,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7299e34a/3c0c7bcea3eb4a30865b01cf522fdac3 [2021-12-22 12:13:50,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:13:50,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:13:50,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:13:50,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:13:50,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:13:50,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:13:50" (1/1) ... [2021-12-22 12:13:50,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@962149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:50, skipping insertion in model container [2021-12-22 12:13:50,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:13:50" (1/1) ... [2021-12-22 12:13:50,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:13:50,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:13:51,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2021-12-22 12:13:51,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2021-12-22 12:13:51,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2021-12-22 12:13:51,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2021-12-22 12:13:51,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2021-12-22 12:13:51,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2021-12-22 12:13:51,163 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2021-12-22 12:13:51,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2021-12-22 12:13:51,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2021-12-22 12:13:51,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2021-12-22 12:13:51,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2021-12-22 12:13:51,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2021-12-22 12:13:51,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2021-12-22 12:13:51,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2021-12-22 12:13:51,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2021-12-22 12:13:51,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2021-12-22 12:13:51,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2021-12-22 12:13:51,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2021-12-22 12:13:51,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2021-12-22 12:13:51,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2021-12-22 12:13:51,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2021-12-22 12:13:51,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2021-12-22 12:13:51,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:13:51,686 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:13:51,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2021-12-22 12:13:51,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2021-12-22 12:13:51,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2021-12-22 12:13:51,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2021-12-22 12:13:51,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2021-12-22 12:13:51,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2021-12-22 12:13:51,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2021-12-22 12:13:51,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2021-12-22 12:13:51,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2021-12-22 12:13:51,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2021-12-22 12:13:51,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2021-12-22 12:13:51,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2021-12-22 12:13:51,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2021-12-22 12:13:51,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2021-12-22 12:13:51,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2021-12-22 12:13:51,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2021-12-22 12:13:51,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2021-12-22 12:13:51,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2021-12-22 12:13:51,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2021-12-22 12:13:51,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2021-12-22 12:13:51,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2021-12-22 12:13:51,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2021-12-22 12:13:52,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:13:52,100 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:13:52,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52 WrapperNode [2021-12-22 12:13:52,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:13:52,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:13:52,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:13:52,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:13:52,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,255 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6322 [2021-12-22 12:13:52,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:13:52,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:13:52,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:13:52,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:13:52,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:13:52,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:13:52,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:13:52,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:13:52,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (1/1) ... [2021-12-22 12:13:52,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:13:52,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:13:52,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:13:52,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:13:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:13:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:13:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:13:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:13:52,865 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:13:52,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:13:55,187 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:13:55,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:13:55,211 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:13:55,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:13:55 BoogieIcfgContainer [2021-12-22 12:13:55,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:13:55,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:13:55,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:13:55,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:13:55,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:13:50" (1/3) ... [2021-12-22 12:13:55,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df72816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:13:55, skipping insertion in model container [2021-12-22 12:13:55,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:52" (2/3) ... [2021-12-22 12:13:55,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df72816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:13:55, skipping insertion in model container [2021-12-22 12:13:55,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:13:55" (3/3) ... [2021-12-22 12:13:55,222 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-22 12:13:55,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:13:55,226 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-12-22 12:13:55,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:13:55,285 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:13:55,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-12-22 12:13:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 1101 states have (on average 1.8601271571298819) internal successors, (2048), 1123 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 12:13:55,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:55,338 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] [2021-12-22 12:13:55,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -845723877, now seen corresponding path program 1 times [2021-12-22 12:13:55,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:55,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972623144] [2021-12-22 12:13:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:55,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:55,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:55,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972623144] [2021-12-22 12:13:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972623144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:55,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:13:55,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222025666] [2021-12-22 12:13:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:55,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:13:55,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:13:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:13:55,790 INFO L87 Difference]: Start difference. First operand has 1124 states, 1101 states have (on average 1.8601271571298819) internal successors, (2048), 1123 states have internal predecessors, (2048), 0 states have call successors, (0), 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 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:13:56,496 INFO L93 Difference]: Finished difference Result 1702 states and 2998 transitions. [2021-12-22 12:13:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:13:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-22 12:13:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:13:56,515 INFO L225 Difference]: With dead ends: 1702 [2021-12-22 12:13:56,515 INFO L226 Difference]: Without dead ends: 868 [2021-12-22 12:13:56,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:13:56,551 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 4490 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:13:56,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4490 Valid, 1041 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:13:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-22 12:13:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-12-22 12:13:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 846 states have (on average 1.3215130023640662) internal successors, (1118), 867 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1118 transitions. [2021-12-22 12:13:56,631 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1118 transitions. Word has length 85 [2021-12-22 12:13:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:13:56,631 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1118 transitions. [2021-12-22 12:13:56,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1118 transitions. [2021-12-22 12:13:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-22 12:13:56,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:56,635 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] [2021-12-22 12:13:56,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:13:56,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1932230466, now seen corresponding path program 1 times [2021-12-22 12:13:56,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:56,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182949120] [2021-12-22 12:13:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:56,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:56,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:56,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182949120] [2021-12-22 12:13:56,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182949120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:56,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:56,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:13:56,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786457158] [2021-12-22 12:13:56,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:56,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:13:56,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:56,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:13:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:13:56,784 INFO L87 Difference]: Start difference. First operand 868 states and 1118 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:13:57,279 INFO L93 Difference]: Finished difference Result 1437 states and 1906 transitions. [2021-12-22 12:13:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:13:57,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-22 12:13:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:13:57,283 INFO L225 Difference]: With dead ends: 1437 [2021-12-22 12:13:57,283 INFO L226 Difference]: Without dead ends: 764 [2021-12-22 12:13:57,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:13:57,286 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 2847 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:13:57,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 564 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:13:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-22 12:13:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-12-22 12:13:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 742 states have (on average 1.34366576819407) internal successors, (997), 763 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 997 transitions. [2021-12-22 12:13:57,320 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 997 transitions. Word has length 86 [2021-12-22 12:13:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:13:57,321 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 997 transitions. [2021-12-22 12:13:57,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 997 transitions. [2021-12-22 12:13:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 12:13:57,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:57,324 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] [2021-12-22 12:13:57,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:13:57,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1627866598, now seen corresponding path program 1 times [2021-12-22 12:13:57,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615181304] [2021-12-22 12:13:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:57,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:57,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:57,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615181304] [2021-12-22 12:13:57,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615181304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:57,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:57,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:13:57,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960676822] [2021-12-22 12:13:57,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:57,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:13:57,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:13:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:13:57,457 INFO L87 Difference]: Start difference. First operand 764 states and 997 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:13:57,904 INFO L93 Difference]: Finished difference Result 1333 states and 1784 transitions. [2021-12-22 12:13:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:13:57,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-12-22 12:13:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:13:57,908 INFO L225 Difference]: With dead ends: 1333 [2021-12-22 12:13:57,908 INFO L226 Difference]: Without dead ends: 700 [2021-12-22 12:13:57,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:13:57,910 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 2662 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:13:57,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2662 Valid, 532 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:13:57,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-12-22 12:13:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2021-12-22 12:13:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 678 states have (on average 1.3628318584070795) internal successors, (924), 699 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 924 transitions. [2021-12-22 12:13:57,958 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 924 transitions. Word has length 87 [2021-12-22 12:13:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:13:57,959 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 924 transitions. [2021-12-22 12:13:57,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 924 transitions. [2021-12-22 12:13:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-22 12:13:57,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:57,961 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] [2021-12-22 12:13:57,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:13:57,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2037300131, now seen corresponding path program 1 times [2021-12-22 12:13:57,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:57,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468761447] [2021-12-22 12:13:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:57,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:58,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468761447] [2021-12-22 12:13:58,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468761447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:58,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:58,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:13:58,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125998847] [2021-12-22 12:13:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:58,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:13:58,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:13:58,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:13:58,046 INFO L87 Difference]: Start difference. First operand 700 states and 924 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:13:58,421 INFO L93 Difference]: Finished difference Result 1269 states and 1710 transitions. [2021-12-22 12:13:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:13:58,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-22 12:13:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:13:58,424 INFO L225 Difference]: With dead ends: 1269 [2021-12-22 12:13:58,424 INFO L226 Difference]: Without dead ends: 659 [2021-12-22 12:13:58,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:13:58,426 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 2562 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:13:58,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2562 Valid, 507 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:13:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-22 12:13:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2021-12-22 12:13:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 637 states have (on average 1.3783359497645211) internal successors, (878), 658 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 878 transitions. [2021-12-22 12:13:58,467 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 878 transitions. Word has length 88 [2021-12-22 12:13:58,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:13:58,468 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 878 transitions. [2021-12-22 12:13:58,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:58,468 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 878 transitions. [2021-12-22 12:13:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-22 12:13:58,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:58,470 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] [2021-12-22 12:13:58,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:13:58,471 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:58,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1730545767, now seen corresponding path program 1 times [2021-12-22 12:13:58,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:58,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367940898] [2021-12-22 12:13:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:58,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:58,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:58,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367940898] [2021-12-22 12:13:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367940898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:58,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:58,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:13:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033904406] [2021-12-22 12:13:58,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:58,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:13:58,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:13:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:13:58,551 INFO L87 Difference]: Start difference. First operand 659 states and 878 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:13:58,963 INFO L93 Difference]: Finished difference Result 1228 states and 1663 transitions. [2021-12-22 12:13:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:13:58,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-12-22 12:13:58,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:13:58,967 INFO L225 Difference]: With dead ends: 1228 [2021-12-22 12:13:58,967 INFO L226 Difference]: Without dead ends: 640 [2021-12-22 12:13:58,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:13:58,969 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 2479 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:13:58,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 496 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:13:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-12-22 12:13:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-12-22 12:13:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 618 states have (on average 1.3851132686084142) internal successors, (856), 639 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 856 transitions. [2021-12-22 12:13:59,002 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 856 transitions. Word has length 89 [2021-12-22 12:13:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:13:59,002 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 856 transitions. [2021-12-22 12:13:59,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 856 transitions. [2021-12-22 12:13:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:13:59,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:59,005 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] [2021-12-22 12:13:59,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:13:59,005 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -593456260, now seen corresponding path program 1 times [2021-12-22 12:13:59,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:59,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49585026] [2021-12-22 12:13:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:59,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:59,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49585026] [2021-12-22 12:13:59,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49585026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:59,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:59,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:13:59,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204194935] [2021-12-22 12:13:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:59,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:13:59,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:13:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:13:59,083 INFO L87 Difference]: Start difference. First operand 640 states and 856 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:13:59,587 INFO L93 Difference]: Finished difference Result 1209 states and 1640 transitions. [2021-12-22 12:13:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:13:59,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-12-22 12:13:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:13:59,590 INFO L225 Difference]: With dead ends: 1209 [2021-12-22 12:13:59,590 INFO L226 Difference]: Without dead ends: 635 [2021-12-22 12:13:59,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:13:59,592 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 2341 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:13:59,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 421 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:13:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-12-22 12:13:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2021-12-22 12:13:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3849918433931485) internal successors, (849), 634 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 849 transitions. [2021-12-22 12:13:59,624 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 849 transitions. Word has length 90 [2021-12-22 12:13:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:13:59,624 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 849 transitions. [2021-12-22 12:13:59,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:13:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 849 transitions. [2021-12-22 12:13:59,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:13:59,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:13:59,626 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] [2021-12-22 12:13:59,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:13:59,627 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:13:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:13:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1183984296, now seen corresponding path program 1 times [2021-12-22 12:13:59,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:13:59,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429217296] [2021-12-22 12:13:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:13:59,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:13:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:13:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:13:59,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:13:59,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429217296] [2021-12-22 12:13:59,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429217296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:13:59,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:13:59,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:13:59,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350689237] [2021-12-22 12:13:59,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:13:59,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 12:13:59,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:13:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 12:13:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:13:59,766 INFO L87 Difference]: Start difference. First operand 635 states and 849 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:00,543 INFO L93 Difference]: Finished difference Result 1197 states and 1558 transitions. [2021-12-22 12:14:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 12:14:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 12:14:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:00,546 INFO L225 Difference]: With dead ends: 1197 [2021-12-22 12:14:00,546 INFO L226 Difference]: Without dead ends: 852 [2021-12-22 12:14:00,547 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 [2021-12-22 12:14:00,548 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 2779 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:00,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2779 Valid, 1026 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:14:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-12-22 12:14:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 635. [2021-12-22 12:14:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3833605220228384) internal successors, (848), 634 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 848 transitions. [2021-12-22 12:14:00,615 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 848 transitions. Word has length 91 [2021-12-22 12:14:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:00,617 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 848 transitions. [2021-12-22 12:14:00,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 848 transitions. [2021-12-22 12:14:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:14:00,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:00,620 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] [2021-12-22 12:14:00,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:14:00,621 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1428942257, now seen corresponding path program 1 times [2021-12-22 12:14:00,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:00,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918966351] [2021-12-22 12:14:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:00,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:00,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:00,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918966351] [2021-12-22 12:14:00,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918966351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:00,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:00,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:00,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024272166] [2021-12-22 12:14:00,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:00,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:00,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:00,803 INFO L87 Difference]: Start difference. First operand 635 states and 848 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:02,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:02,194 INFO L93 Difference]: Finished difference Result 1325 states and 1810 transitions. [2021-12-22 12:14:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:02,194 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 12:14:02,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:02,198 INFO L225 Difference]: With dead ends: 1325 [2021-12-22 12:14:02,198 INFO L226 Difference]: Without dead ends: 1133 [2021-12-22 12:14:02,200 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 [2021-12-22 12:14:02,201 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 4267 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:02,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4267 Valid, 3025 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:14:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-22 12:14:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 635. [2021-12-22 12:14:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3817292006525286) internal successors, (847), 634 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 847 transitions. [2021-12-22 12:14:02,250 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 847 transitions. Word has length 91 [2021-12-22 12:14:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:02,250 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 847 transitions. [2021-12-22 12:14:02,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 847 transitions. [2021-12-22 12:14:02,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:14:02,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:02,254 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] [2021-12-22 12:14:02,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:14:02,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1459275419, now seen corresponding path program 1 times [2021-12-22 12:14:02,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:02,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364509229] [2021-12-22 12:14:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:02,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:02,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:02,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364509229] [2021-12-22 12:14:02,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364509229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:02,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:02,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:02,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367866615] [2021-12-22 12:14:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:02,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:02,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:02,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:02,403 INFO L87 Difference]: Start difference. First operand 635 states and 847 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:03,696 INFO L93 Difference]: Finished difference Result 1078 states and 1436 transitions. [2021-12-22 12:14:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:03,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 12:14:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:03,701 INFO L225 Difference]: With dead ends: 1078 [2021-12-22 12:14:03,701 INFO L226 Difference]: Without dead ends: 1073 [2021-12-22 12:14:03,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:03,702 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 2449 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:03,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 2109 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-12-22 12:14:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 635. [2021-12-22 12:14:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3800978792822185) internal successors, (846), 634 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 846 transitions. [2021-12-22 12:14:03,764 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 846 transitions. Word has length 91 [2021-12-22 12:14:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:03,764 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 846 transitions. [2021-12-22 12:14:03,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 846 transitions. [2021-12-22 12:14:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:03,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:03,767 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] [2021-12-22 12:14:03,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:14:03,767 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:03,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2136143015, now seen corresponding path program 1 times [2021-12-22 12:14:03,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:03,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121192300] [2021-12-22 12:14:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:03,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:03,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121192300] [2021-12-22 12:14:03,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121192300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:03,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:03,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:03,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580195204] [2021-12-22 12:14:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:03,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:03,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:03,894 INFO L87 Difference]: Start difference. First operand 635 states and 846 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:05,229 INFO L93 Difference]: Finished difference Result 1355 states and 1835 transitions. [2021-12-22 12:14:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:05,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:05,234 INFO L225 Difference]: With dead ends: 1355 [2021-12-22 12:14:05,234 INFO L226 Difference]: Without dead ends: 1133 [2021-12-22 12:14:05,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:05,235 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 2402 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:05,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 2860 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:14:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-22 12:14:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 635. [2021-12-22 12:14:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3784665579119086) internal successors, (845), 634 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 845 transitions. [2021-12-22 12:14:05,294 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 845 transitions. Word has length 93 [2021-12-22 12:14:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:05,294 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 845 transitions. [2021-12-22 12:14:05,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 845 transitions. [2021-12-22 12:14:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:05,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:05,296 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] [2021-12-22 12:14:05,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:14:05,296 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2068984294, now seen corresponding path program 1 times [2021-12-22 12:14:05,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:05,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466202633] [2021-12-22 12:14:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:05,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:05,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:05,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466202633] [2021-12-22 12:14:05,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466202633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:05,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:05,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:05,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518954729] [2021-12-22 12:14:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:05,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:05,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:05,450 INFO L87 Difference]: Start difference. First operand 635 states and 845 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:06,622 INFO L93 Difference]: Finished difference Result 1078 states and 1433 transitions. [2021-12-22 12:14:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:06,626 INFO L225 Difference]: With dead ends: 1078 [2021-12-22 12:14:06,626 INFO L226 Difference]: Without dead ends: 1073 [2021-12-22 12:14:06,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:06,627 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 4637 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:06,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4637 Valid, 2113 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:14:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-12-22 12:14:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 635. [2021-12-22 12:14:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3768352365415988) internal successors, (844), 634 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 844 transitions. [2021-12-22 12:14:06,699 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 844 transitions. Word has length 93 [2021-12-22 12:14:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:06,700 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 844 transitions. [2021-12-22 12:14:06,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 844 transitions. [2021-12-22 12:14:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:06,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:06,702 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] [2021-12-22 12:14:06,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:14:06,702 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 928092964, now seen corresponding path program 1 times [2021-12-22 12:14:06,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:06,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986694571] [2021-12-22 12:14:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:06,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:06,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986694571] [2021-12-22 12:14:06,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986694571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:06,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:06,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:06,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544174102] [2021-12-22 12:14:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:06,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:06,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:06,815 INFO L87 Difference]: Start difference. First operand 635 states and 844 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:08,119 INFO L93 Difference]: Finished difference Result 1267 states and 1722 transitions. [2021-12-22 12:14:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:08,124 INFO L225 Difference]: With dead ends: 1267 [2021-12-22 12:14:08,124 INFO L226 Difference]: Without dead ends: 1129 [2021-12-22 12:14:08,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:08,125 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 2108 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:08,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 3264 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-12-22 12:14:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 635. [2021-12-22 12:14:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3752039151712887) internal successors, (843), 634 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 843 transitions. [2021-12-22 12:14:08,191 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 843 transitions. Word has length 93 [2021-12-22 12:14:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:08,191 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 843 transitions. [2021-12-22 12:14:08,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 843 transitions. [2021-12-22 12:14:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:08,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:08,193 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] [2021-12-22 12:14:08,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 12:14:08,194 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash 538302253, now seen corresponding path program 1 times [2021-12-22 12:14:08,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:08,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972865981] [2021-12-22 12:14:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:08,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:08,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:08,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972865981] [2021-12-22 12:14:08,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972865981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:08,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:08,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:08,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248674956] [2021-12-22 12:14:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:08,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:08,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:08,308 INFO L87 Difference]: Start difference. First operand 635 states and 843 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:09,342 INFO L93 Difference]: Finished difference Result 1152 states and 1541 transitions. [2021-12-22 12:14:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:09,346 INFO L225 Difference]: With dead ends: 1152 [2021-12-22 12:14:09,347 INFO L226 Difference]: Without dead ends: 1073 [2021-12-22 12:14:09,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:09,348 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 3529 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3529 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:09,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3529 Valid, 2112 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:14:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-12-22 12:14:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 635. [2021-12-22 12:14:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3735725938009788) internal successors, (842), 634 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 842 transitions. [2021-12-22 12:14:09,414 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 842 transitions. Word has length 93 [2021-12-22 12:14:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:09,415 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 842 transitions. [2021-12-22 12:14:09,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 842 transitions. [2021-12-22 12:14:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:09,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:09,417 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] [2021-12-22 12:14:09,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 12:14:09,417 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:09,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash -350742557, now seen corresponding path program 1 times [2021-12-22 12:14:09,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:09,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509308660] [2021-12-22 12:14:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:09,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:09,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509308660] [2021-12-22 12:14:09,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509308660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:09,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:09,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 12:14:09,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326794193] [2021-12-22 12:14:09,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:09,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:14:09,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:14:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:14:09,618 INFO L87 Difference]: Start difference. First operand 635 states and 842 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:12,519 INFO L93 Difference]: Finished difference Result 1935 states and 2698 transitions. [2021-12-22 12:14:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 12:14:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:12,526 INFO L225 Difference]: With dead ends: 1935 [2021-12-22 12:14:12,527 INFO L226 Difference]: Without dead ends: 1797 [2021-12-22 12:14:12,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-22 12:14:12,528 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 6545 mSDsluCounter, 4047 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6545 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:12,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6545 Valid, 5142 Invalid, 4827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:14:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-12-22 12:14:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 639. [2021-12-22 12:14:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.3711507293354943) internal successors, (846), 638 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 846 transitions. [2021-12-22 12:14:12,618 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 846 transitions. Word has length 93 [2021-12-22 12:14:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:12,618 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 846 transitions. [2021-12-22 12:14:12,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 846 transitions. [2021-12-22 12:14:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:12,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:12,620 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] [2021-12-22 12:14:12,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 12:14:12,621 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1071615541, now seen corresponding path program 1 times [2021-12-22 12:14:12,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:12,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998682826] [2021-12-22 12:14:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:12,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:12,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998682826] [2021-12-22 12:14:12,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998682826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:12,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:12,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:12,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377056400] [2021-12-22 12:14:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:12,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:12,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:12,739 INFO L87 Difference]: Start difference. First operand 639 states and 846 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:13,938 INFO L93 Difference]: Finished difference Result 1153 states and 1540 transitions. [2021-12-22 12:14:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:13,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:13,943 INFO L225 Difference]: With dead ends: 1153 [2021-12-22 12:14:13,943 INFO L226 Difference]: Without dead ends: 1077 [2021-12-22 12:14:13,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:13,947 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 3512 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:13,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 2119 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:14:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2021-12-22 12:14:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 639. [2021-12-22 12:14:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.3695299837925445) internal successors, (845), 638 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 845 transitions. [2021-12-22 12:14:14,042 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 845 transitions. Word has length 93 [2021-12-22 12:14:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:14,042 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 845 transitions. [2021-12-22 12:14:14,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 845 transitions. [2021-12-22 12:14:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:14,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:14,044 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] [2021-12-22 12:14:14,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 12:14:14,045 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1548345882, now seen corresponding path program 1 times [2021-12-22 12:14:14,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:14,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876746593] [2021-12-22 12:14:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:14,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:14,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:14,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876746593] [2021-12-22 12:14:14,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876746593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:14,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:14,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:14,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066833114] [2021-12-22 12:14:14,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:14,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:14,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:14,204 INFO L87 Difference]: Start difference. First operand 639 states and 845 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:15,508 INFO L93 Difference]: Finished difference Result 1252 states and 1703 transitions. [2021-12-22 12:14:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:15,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:15,512 INFO L225 Difference]: With dead ends: 1252 [2021-12-22 12:14:15,512 INFO L226 Difference]: Without dead ends: 1129 [2021-12-22 12:14:15,513 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 [2021-12-22 12:14:15,514 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 4907 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4907 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:15,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4907 Valid, 2675 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:14:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-12-22 12:14:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 639. [2021-12-22 12:14:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.3679092382495948) internal successors, (844), 638 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 844 transitions. [2021-12-22 12:14:15,617 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 844 transitions. Word has length 93 [2021-12-22 12:14:15,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:15,618 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 844 transitions. [2021-12-22 12:14:15,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 844 transitions. [2021-12-22 12:14:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 12:14:15,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:15,620 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] [2021-12-22 12:14:15,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 12:14:15,620 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1779757049, now seen corresponding path program 1 times [2021-12-22 12:14:15,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:15,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870707357] [2021-12-22 12:14:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:15,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:15,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:15,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870707357] [2021-12-22 12:14:15,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870707357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:15,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:15,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:15,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474600314] [2021-12-22 12:14:15,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:15,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:15,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:15,730 INFO L87 Difference]: Start difference. First operand 639 states and 844 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:16,843 INFO L93 Difference]: Finished difference Result 1153 states and 1538 transitions. [2021-12-22 12:14:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-22 12:14:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:16,847 INFO L225 Difference]: With dead ends: 1153 [2021-12-22 12:14:16,847 INFO L226 Difference]: Without dead ends: 1077 [2021-12-22 12:14:16,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:16,848 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 4604 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:16,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4604 Valid, 2116 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:14:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2021-12-22 12:14:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 639. [2021-12-22 12:14:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.366288492706645) internal successors, (843), 638 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 843 transitions. [2021-12-22 12:14:16,939 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 843 transitions. Word has length 93 [2021-12-22 12:14:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:16,940 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 843 transitions. [2021-12-22 12:14:16,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 843 transitions. [2021-12-22 12:14:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 12:14:16,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:16,942 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] [2021-12-22 12:14:16,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 12:14:16,942 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:16,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 911066776, now seen corresponding path program 1 times [2021-12-22 12:14:16,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:16,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398858355] [2021-12-22 12:14:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:16,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:17,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:17,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398858355] [2021-12-22 12:14:17,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398858355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:17,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:17,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:17,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114245916] [2021-12-22 12:14:17,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:17,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:17,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:17,044 INFO L87 Difference]: Start difference. First operand 639 states and 843 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:18,360 INFO L93 Difference]: Finished difference Result 1267 states and 1718 transitions. [2021-12-22 12:14:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-22 12:14:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:18,364 INFO L225 Difference]: With dead ends: 1267 [2021-12-22 12:14:18,364 INFO L226 Difference]: Without dead ends: 1129 [2021-12-22 12:14:18,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:18,366 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 2863 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:18,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2863 Valid, 3325 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-12-22 12:14:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 635. [2021-12-22 12:14:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.367047308319739) internal successors, (838), 634 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 838 transitions. [2021-12-22 12:14:18,444 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 838 transitions. Word has length 94 [2021-12-22 12:14:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:18,445 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 838 transitions. [2021-12-22 12:14:18,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 838 transitions. [2021-12-22 12:14:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:18,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:18,447 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] [2021-12-22 12:14:18,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 12:14:18,447 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1878690134, now seen corresponding path program 1 times [2021-12-22 12:14:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693051614] [2021-12-22 12:14:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:18,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:18,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:18,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693051614] [2021-12-22 12:14:18,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693051614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:18,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:18,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:18,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954164118] [2021-12-22 12:14:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:18,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:18,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:18,559 INFO L87 Difference]: Start difference. First operand 635 states and 838 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:19,790 INFO L93 Difference]: Finished difference Result 1229 states and 1657 transitions. [2021-12-22 12:14:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:19,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:19,793 INFO L225 Difference]: With dead ends: 1229 [2021-12-22 12:14:19,793 INFO L226 Difference]: Without dead ends: 1121 [2021-12-22 12:14:19,794 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 [2021-12-22 12:14:19,794 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 4624 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:19,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4624 Valid, 2638 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:14:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-12-22 12:14:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 635. [2021-12-22 12:14:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3654159869494291) internal successors, (837), 634 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 837 transitions. [2021-12-22 12:14:19,910 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 837 transitions. Word has length 95 [2021-12-22 12:14:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:19,911 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 837 transitions. [2021-12-22 12:14:19,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 837 transitions. [2021-12-22 12:14:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:19,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:19,913 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] [2021-12-22 12:14:19,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 12:14:19,913 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1469844906, now seen corresponding path program 1 times [2021-12-22 12:14:19,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606366709] [2021-12-22 12:14:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:19,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:20,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606366709] [2021-12-22 12:14:20,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606366709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:20,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:20,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:20,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201805417] [2021-12-22 12:14:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:20,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:20,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:20,055 INFO L87 Difference]: Start difference. First operand 635 states and 837 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:21,365 INFO L93 Difference]: Finished difference Result 1191 states and 1598 transitions. [2021-12-22 12:14:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:21,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:21,368 INFO L225 Difference]: With dead ends: 1191 [2021-12-22 12:14:21,369 INFO L226 Difference]: Without dead ends: 1105 [2021-12-22 12:14:21,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:21,370 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 3948 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:21,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3948 Valid, 2958 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2021-12-22 12:14:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 635. [2021-12-22 12:14:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.363784665579119) internal successors, (836), 634 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 836 transitions. [2021-12-22 12:14:21,457 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 836 transitions. Word has length 95 [2021-12-22 12:14:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:21,457 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 836 transitions. [2021-12-22 12:14:21,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 836 transitions. [2021-12-22 12:14:21,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:21,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:21,459 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] [2021-12-22 12:14:21,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 12:14:21,460 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2020844490, now seen corresponding path program 1 times [2021-12-22 12:14:21,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:21,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817144981] [2021-12-22 12:14:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:21,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:21,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:21,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817144981] [2021-12-22 12:14:21,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817144981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:21,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:21,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:21,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688994824] [2021-12-22 12:14:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:21,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:21,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:21,558 INFO L87 Difference]: Start difference. First operand 635 states and 836 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:22,924 INFO L93 Difference]: Finished difference Result 1282 states and 1726 transitions. [2021-12-22 12:14:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:22,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:22,927 INFO L225 Difference]: With dead ends: 1282 [2021-12-22 12:14:22,927 INFO L226 Difference]: Without dead ends: 1129 [2021-12-22 12:14:22,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:22,929 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 3032 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3032 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:22,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3032 Valid, 3109 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-12-22 12:14:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 635. [2021-12-22 12:14:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3621533442088092) internal successors, (835), 634 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 835 transitions. [2021-12-22 12:14:23,012 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 835 transitions. Word has length 95 [2021-12-22 12:14:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:23,012 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 835 transitions. [2021-12-22 12:14:23,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 835 transitions. [2021-12-22 12:14:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:23,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:23,014 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] [2021-12-22 12:14:23,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 12:14:23,015 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash -742387417, now seen corresponding path program 1 times [2021-12-22 12:14:23,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:23,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246678977] [2021-12-22 12:14:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:23,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:23,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:23,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246678977] [2021-12-22 12:14:23,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246678977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:23,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:23,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:23,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406919503] [2021-12-22 12:14:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:23,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:23,126 INFO L87 Difference]: Start difference. First operand 635 states and 835 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:24,384 INFO L93 Difference]: Finished difference Result 1220 states and 1644 transitions. [2021-12-22 12:14:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:24,389 INFO L225 Difference]: With dead ends: 1220 [2021-12-22 12:14:24,389 INFO L226 Difference]: Without dead ends: 1121 [2021-12-22 12:14:24,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-22 12:14:24,390 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 4323 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:24,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4323 Valid, 2884 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:14:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-12-22 12:14:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 635. [2021-12-22 12:14:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.360522022838499) internal successors, (834), 634 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 834 transitions. [2021-12-22 12:14:24,480 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 834 transitions. Word has length 95 [2021-12-22 12:14:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 834 transitions. [2021-12-22 12:14:24,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 834 transitions. [2021-12-22 12:14:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:24,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:24,483 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] [2021-12-22 12:14:24,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 12:14:24,483 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1920722797, now seen corresponding path program 1 times [2021-12-22 12:14:24,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:24,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525906789] [2021-12-22 12:14:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:24,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:24,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:24,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525906789] [2021-12-22 12:14:24,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525906789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:24,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:24,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:24,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359250050] [2021-12-22 12:14:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:24,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:24,603 INFO L87 Difference]: Start difference. First operand 635 states and 834 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:25,970 INFO L93 Difference]: Finished difference Result 1187 states and 1591 transitions. [2021-12-22 12:14:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:25,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:25,973 INFO L225 Difference]: With dead ends: 1187 [2021-12-22 12:14:25,973 INFO L226 Difference]: Without dead ends: 1105 [2021-12-22 12:14:25,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:25,975 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 3897 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:25,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3897 Valid, 3031 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2021-12-22 12:14:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 635. [2021-12-22 12:14:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3588907014681892) internal successors, (833), 634 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 833 transitions. [2021-12-22 12:14:26,064 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 833 transitions. Word has length 95 [2021-12-22 12:14:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:26,065 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 833 transitions. [2021-12-22 12:14:26,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 833 transitions. [2021-12-22 12:14:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:26,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:26,067 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] [2021-12-22 12:14:26,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 12:14:26,067 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -891627133, now seen corresponding path program 1 times [2021-12-22 12:14:26,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229311945] [2021-12-22 12:14:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:26,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:26,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:26,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229311945] [2021-12-22 12:14:26,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229311945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:26,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:26,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:26,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294739522] [2021-12-22 12:14:26,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:26,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:26,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:26,186 INFO L87 Difference]: Start difference. First operand 635 states and 833 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:27,503 INFO L93 Difference]: Finished difference Result 1191 states and 1593 transitions. [2021-12-22 12:14:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:27,506 INFO L225 Difference]: With dead ends: 1191 [2021-12-22 12:14:27,506 INFO L226 Difference]: Without dead ends: 1105 [2021-12-22 12:14:27,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:27,507 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 3897 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:27,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3897 Valid, 3028 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2021-12-22 12:14:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 635. [2021-12-22 12:14:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3572593800978794) internal successors, (832), 634 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 832 transitions. [2021-12-22 12:14:27,620 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 832 transitions. Word has length 95 [2021-12-22 12:14:27,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:27,620 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 832 transitions. [2021-12-22 12:14:27,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 832 transitions. [2021-12-22 12:14:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:27,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:27,622 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] [2021-12-22 12:14:27,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 12:14:27,622 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash -482781905, now seen corresponding path program 1 times [2021-12-22 12:14:27,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:27,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233496955] [2021-12-22 12:14:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:27,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:27,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233496955] [2021-12-22 12:14:27,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233496955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:27,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:27,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 12:14:27,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826952662] [2021-12-22 12:14:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:27,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:14:27,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:14:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:14:27,822 INFO L87 Difference]: Start difference. First operand 635 states and 832 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:30,238 INFO L93 Difference]: Finished difference Result 1787 states and 2460 transitions. [2021-12-22 12:14:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 12:14:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:30,243 INFO L225 Difference]: With dead ends: 1787 [2021-12-22 12:14:30,243 INFO L226 Difference]: Without dead ends: 1679 [2021-12-22 12:14:30,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-22 12:14:30,245 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 5852 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 2953 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5852 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:30,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5852 Valid, 3708 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:14:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-12-22 12:14:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 639. [2021-12-22 12:14:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.3549432739059968) internal successors, (836), 638 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 836 transitions. [2021-12-22 12:14:30,339 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 836 transitions. Word has length 95 [2021-12-22 12:14:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:30,339 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 836 transitions. [2021-12-22 12:14:30,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 836 transitions. [2021-12-22 12:14:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:30,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:30,342 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] [2021-12-22 12:14:30,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 12:14:30,342 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1726591378, now seen corresponding path program 1 times [2021-12-22 12:14:30,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:30,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091619799] [2021-12-22 12:14:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:30,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:30,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091619799] [2021-12-22 12:14:30,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091619799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:30,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:30,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:30,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559667028] [2021-12-22 12:14:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:30,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:30,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:30,456 INFO L87 Difference]: Start difference. First operand 639 states and 836 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:31,733 INFO L93 Difference]: Finished difference Result 1220 states and 1640 transitions. [2021-12-22 12:14:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:31,736 INFO L225 Difference]: With dead ends: 1220 [2021-12-22 12:14:31,736 INFO L226 Difference]: Without dead ends: 1121 [2021-12-22 12:14:31,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-22 12:14:31,744 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 4159 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4159 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:31,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4159 Valid, 2832 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:14:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-12-22 12:14:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 639. [2021-12-22 12:14:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.353322528363047) internal successors, (835), 638 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 835 transitions. [2021-12-22 12:14:31,880 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 835 transitions. Word has length 95 [2021-12-22 12:14:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:31,880 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 835 transitions. [2021-12-22 12:14:31,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 835 transitions. [2021-12-22 12:14:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:31,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:31,882 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] [2021-12-22 12:14:31,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 12:14:31,883 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:31,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:31,883 INFO L85 PathProgramCache]: Analyzing trace with hash -738270563, now seen corresponding path program 1 times [2021-12-22 12:14:31,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:31,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348881480] [2021-12-22 12:14:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:31,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:31,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:31,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348881480] [2021-12-22 12:14:31,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348881480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:31,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:31,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:31,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210274787] [2021-12-22 12:14:31,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:31,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:31,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:31,996 INFO L87 Difference]: Start difference. First operand 639 states and 835 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:33,344 INFO L93 Difference]: Finished difference Result 1191 states and 1592 transitions. [2021-12-22 12:14:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:33,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:33,347 INFO L225 Difference]: With dead ends: 1191 [2021-12-22 12:14:33,348 INFO L226 Difference]: Without dead ends: 1109 [2021-12-22 12:14:33,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:33,349 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 3855 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3855 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:33,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3855 Valid, 3106 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-12-22 12:14:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 639. [2021-12-22 12:14:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.3517017828200972) internal successors, (834), 638 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 834 transitions. [2021-12-22 12:14:33,458 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 834 transitions. Word has length 95 [2021-12-22 12:14:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:33,459 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 834 transitions. [2021-12-22 12:14:33,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 834 transitions. [2021-12-22 12:14:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:33,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:33,461 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] [2021-12-22 12:14:33,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 12:14:33,461 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:33,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1153671650, now seen corresponding path program 1 times [2021-12-22 12:14:33,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:33,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654848755] [2021-12-22 12:14:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:33,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:33,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:33,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654848755] [2021-12-22 12:14:33,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654848755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:33,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:33,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 12:14:33,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734846571] [2021-12-22 12:14:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:33,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:14:33,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:14:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:14:33,627 INFO L87 Difference]: Start difference. First operand 639 states and 834 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:35,965 INFO L93 Difference]: Finished difference Result 1787 states and 2461 transitions. [2021-12-22 12:14:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 12:14:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:35,968 INFO L225 Difference]: With dead ends: 1787 [2021-12-22 12:14:35,968 INFO L226 Difference]: Without dead ends: 1679 [2021-12-22 12:14:35,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-22 12:14:35,969 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 6695 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6695 SdHoareTripleChecker+Valid, 3501 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:35,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6695 Valid, 3501 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:14:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-12-22 12:14:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 643. [2021-12-22 12:14:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3494363929146538) internal successors, (838), 642 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 838 transitions. [2021-12-22 12:14:36,101 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 838 transitions. Word has length 95 [2021-12-22 12:14:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:36,102 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 838 transitions. [2021-12-22 12:14:36,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 838 transitions. [2021-12-22 12:14:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:36,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:36,103 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] [2021-12-22 12:14:36,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 12:14:36,103 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 744826422, now seen corresponding path program 1 times [2021-12-22 12:14:36,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:36,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920909099] [2021-12-22 12:14:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:36,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:36,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:36,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920909099] [2021-12-22 12:14:36,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920909099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:36,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:36,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:36,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531413897] [2021-12-22 12:14:36,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:36,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:36,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:36,226 INFO L87 Difference]: Start difference. First operand 643 states and 838 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:37,587 INFO L93 Difference]: Finished difference Result 1199 states and 1599 transitions. [2021-12-22 12:14:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:37,589 INFO L225 Difference]: With dead ends: 1199 [2021-12-22 12:14:37,589 INFO L226 Difference]: Without dead ends: 1113 [2021-12-22 12:14:37,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:37,590 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 3852 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3852 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:37,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3852 Valid, 3102 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-12-22 12:14:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 643. [2021-12-22 12:14:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3478260869565217) internal successors, (837), 642 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 837 transitions. [2021-12-22 12:14:37,705 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 837 transitions. Word has length 95 [2021-12-22 12:14:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:37,705 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 837 transitions. [2021-12-22 12:14:37,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 837 transitions. [2021-12-22 12:14:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:37,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:37,707 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] [2021-12-22 12:14:37,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 12:14:37,707 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1040432620, now seen corresponding path program 1 times [2021-12-22 12:14:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:37,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277569266] [2021-12-22 12:14:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:37,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:37,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277569266] [2021-12-22 12:14:37,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277569266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:37,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:37,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:37,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306902291] [2021-12-22 12:14:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:37,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:37,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:37,827 INFO L87 Difference]: Start difference. First operand 643 states and 837 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:39,105 INFO L93 Difference]: Finished difference Result 1214 states and 1629 transitions. [2021-12-22 12:14:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:39,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:39,107 INFO L225 Difference]: With dead ends: 1214 [2021-12-22 12:14:39,107 INFO L226 Difference]: Without dead ends: 1121 [2021-12-22 12:14:39,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-22 12:14:39,109 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 4298 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4298 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:39,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4298 Valid, 2702 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:14:39,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-12-22 12:14:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 643. [2021-12-22 12:14:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3462157809983897) internal successors, (836), 642 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 836 transitions. [2021-12-22 12:14:39,223 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 836 transitions. Word has length 95 [2021-12-22 12:14:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:39,224 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 836 transitions. [2021-12-22 12:14:39,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 836 transitions. [2021-12-22 12:14:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:39,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:39,225 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] [2021-12-22 12:14:39,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 12:14:39,225 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash -359034935, now seen corresponding path program 1 times [2021-12-22 12:14:39,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:39,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119570423] [2021-12-22 12:14:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:39,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:39,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:39,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119570423] [2021-12-22 12:14:39,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119570423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:39,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:39,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:14:39,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198350292] [2021-12-22 12:14:39,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:39,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:39,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:39,344 INFO L87 Difference]: Start difference. First operand 643 states and 836 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:40,805 INFO L93 Difference]: Finished difference Result 1193 states and 1591 transitions. [2021-12-22 12:14:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-22 12:14:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:40,807 INFO L225 Difference]: With dead ends: 1193 [2021-12-22 12:14:40,807 INFO L226 Difference]: Without dead ends: 1113 [2021-12-22 12:14:40,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:14:40,808 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 3810 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3810 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:40,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3810 Valid, 3163 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:14:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-12-22 12:14:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 643. [2021-12-22 12:14:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3446054750402576) internal successors, (835), 642 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 835 transitions. [2021-12-22 12:14:40,919 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 835 transitions. Word has length 95 [2021-12-22 12:14:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:40,919 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 835 transitions. [2021-12-22 12:14:40,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:40,919 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 835 transitions. [2021-12-22 12:14:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 12:14:40,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:40,921 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] [2021-12-22 12:14:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 12:14:40,921 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-22 12:14:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1686881281, now seen corresponding path program 1 times [2021-12-22 12:14:40,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:40,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352369271] [2021-12-22 12:14:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:40,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:41,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:41,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352369271] [2021-12-22 12:14:41,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352369271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:41,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:41,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 12:14:41,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680323403] [2021-12-22 12:14:41,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:41,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:14:41,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:41,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:14:41,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:14:41,093 INFO L87 Difference]: Start difference. First operand 643 states and 835 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)