./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38533fb2932c589b42c93c264dc8e5e297bb0dbb9a49080a666466aefcec5174 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:29:28,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:29:28,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:29:28,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:29:28,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:29:28,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:29:28,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:29:28,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:29:28,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:29:28,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:29:28,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:29:28,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:29:28,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:29:28,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:29:28,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:29:28,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:29:28,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:29:28,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:29:28,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:29:28,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:29:28,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:29:28,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:29:28,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:29:28,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:29:28,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:29:28,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:29:28,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:29:28,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:29:28,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:29:28,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:29:28,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:29:28,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:29:28,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:29:28,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:29:28,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:29:28,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:29:28,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:29:28,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:29:28,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:29:28,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:29:28,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:29:28,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:29:28,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:29:28,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:29:28,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:29:28,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:29:28,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:29:28,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:29:28,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:29:28,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:29:28,218 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:29:28,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:29:28,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:29:28,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:29:28,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:29:28,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:29:28,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:29:28,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:29:28,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:29:28,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:29:28,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:29:28,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:29:28,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:29:28,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:29:28,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:29:28,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:29:28,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:29:28,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:29:28,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:29:28,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:29:28,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:29:28,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:29:28,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:29:28,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:29:28,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:29:28,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:29:28,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38533fb2932c589b42c93c264dc8e5e297bb0dbb9a49080a666466aefcec5174 [2021-12-17 16:29:28,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:29:28,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:29:28,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:29:28,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:29:28,462 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:29:28,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-17 16:29:28,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516d50d6a/c9b4e509e58e4364845700932c871394/FLAGf93af4c71 [2021-12-17 16:29:28,957 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:29:28,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-17 16:29:28,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516d50d6a/c9b4e509e58e4364845700932c871394/FLAGf93af4c71 [2021-12-17 16:29:29,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516d50d6a/c9b4e509e58e4364845700932c871394 [2021-12-17 16:29:29,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:29:29,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:29:29,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:29:29,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:29:29,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:29:29,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:29,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe7ff5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29, skipping insertion in model container [2021-12-17 16:29:29,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:29,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:29:29,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:29:29,612 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9419,9432] [2021-12-17 16:29:29,630 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12891,12904] [2021-12-17 16:29:29,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14047,14060] [2021-12-17 16:29:29,641 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14703,14716] [2021-12-17 16:29:29,657 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16224,16237] [2021-12-17 16:29:29,661 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16880,16893] [2021-12-17 16:29:29,667 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17864,17877] [2021-12-17 16:29:29,678 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20202,20215] [2021-12-17 16:29:29,682 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20861,20874] [2021-12-17 16:29:29,687 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21885,21898] [2021-12-17 16:29:29,696 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23760,23773] [2021-12-17 16:29:29,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:29:29,774 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:29:29,834 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9419,9432] [2021-12-17 16:29:29,843 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12891,12904] [2021-12-17 16:29:29,855 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14047,14060] [2021-12-17 16:29:29,859 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14703,14716] [2021-12-17 16:29:29,863 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16224,16237] [2021-12-17 16:29:29,865 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16880,16893] [2021-12-17 16:29:29,868 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17864,17877] [2021-12-17 16:29:29,876 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20202,20215] [2021-12-17 16:29:29,880 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20861,20874] [2021-12-17 16:29:29,888 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21885,21898] [2021-12-17 16:29:29,893 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23760,23773] [2021-12-17 16:29:29,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:29:29,948 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:29:29,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29 WrapperNode [2021-12-17 16:29:29,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:29:29,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:29:29,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:29:29,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:29:29,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:29,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,058 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1868 [2021-12-17 16:29:30,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:29:30,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:29:30,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:29:30,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:29:30,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:29:30,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:29:30,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:29:30,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:29:30,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (1/1) ... [2021-12-17 16:29:30,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:29:30,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:29:30,157 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) [2021-12-17 16:29:30,192 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 [2021-12-17 16:29:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:29:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:29:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:29:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:29:30,375 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:29:30,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:29:31,198 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:29:31,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:29:31,211 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:29:31,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:29:31 BoogieIcfgContainer [2021-12-17 16:29:31,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:29:31,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:29:31,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:29:31,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:29:31,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:29:29" (1/3) ... [2021-12-17 16:29:31,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63043d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:29:31, skipping insertion in model container [2021-12-17 16:29:31,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:29:29" (2/3) ... [2021-12-17 16:29:31,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63043d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:29:31, skipping insertion in model container [2021-12-17 16:29:31,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:29:31" (3/3) ... [2021-12-17 16:29:31,220 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-17 16:29:31,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:29:31,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-17 16:29:31,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:29:31,281 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 [2021-12-17 16:29:31,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-17 16:29:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 346 states have (on average 1.8381502890173411) internal successors, (636), 357 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-17 16:29:31,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:31,319 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] [2021-12-17 16:29:31,320 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1374718599, now seen corresponding path program 1 times [2021-12-17 16:29:31,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:31,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006756479] [2021-12-17 16:29:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:31,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:31,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:31,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006756479] [2021-12-17 16:29:31,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006756479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:31,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:31,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:29:31,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615014342] [2021-12-17 16:29:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:29:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:31,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:29:31,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:29:31,648 INFO L87 Difference]: Start difference. First operand has 358 states, 346 states have (on average 1.8381502890173411) internal successors, (636), 357 states have internal predecessors, (636), 0 states have call successors, (0), 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 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:32,007 INFO L93 Difference]: Finished difference Result 570 states and 974 transitions. [2021-12-17 16:29:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:29:32,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-17 16:29:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:32,030 INFO L225 Difference]: With dead ends: 570 [2021-12-17 16:29:32,030 INFO L226 Difference]: Without dead ends: 315 [2021-12-17 16:29:32,035 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 [2021-12-17 16:29:32,039 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1485 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:32,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 404 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:29:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-17 16:29:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-17 16:29:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.2763157894736843) internal successors, (388), 314 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 388 transitions. [2021-12-17 16:29:32,111 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 388 transitions. Word has length 59 [2021-12-17 16:29:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:32,111 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 388 transitions. [2021-12-17 16:29:32,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 388 transitions. [2021-12-17 16:29:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 16:29:32,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:32,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:32,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:29:32,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash 897843910, now seen corresponding path program 1 times [2021-12-17 16:29:32,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:32,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809685758] [2021-12-17 16:29:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:32,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:32,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809685758] [2021-12-17 16:29:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809685758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:32,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:32,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:29:32,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493198219] [2021-12-17 16:29:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:32,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:29:32,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:29:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:29:32,235 INFO L87 Difference]: Start difference. First operand 315 states and 388 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:32,437 INFO L93 Difference]: Finished difference Result 518 states and 657 transitions. [2021-12-17 16:29:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:29:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-17 16:29:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:32,439 INFO L225 Difference]: With dead ends: 518 [2021-12-17 16:29:32,439 INFO L226 Difference]: Without dead ends: 274 [2021-12-17 16:29:32,440 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 [2021-12-17 16:29:32,441 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 984 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:32,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 207 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:29:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-17 16:29:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-12-17 16:29:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 263 states have (on average 1.3003802281368821) internal successors, (342), 273 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 342 transitions. [2021-12-17 16:29:32,452 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 342 transitions. Word has length 60 [2021-12-17 16:29:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:32,452 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 342 transitions. [2021-12-17 16:29:32,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 342 transitions. [2021-12-17 16:29:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-17 16:29:32,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:32,455 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] [2021-12-17 16:29:32,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:29:32,455 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 626465560, now seen corresponding path program 1 times [2021-12-17 16:29:32,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675835768] [2021-12-17 16:29:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:32,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:32,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:32,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675835768] [2021-12-17 16:29:32,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675835768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:32,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:32,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:29:32,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023108204] [2021-12-17 16:29:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:32,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:29:32,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:29:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:29:32,547 INFO L87 Difference]: Start difference. First operand 274 states and 342 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:32,699 INFO L93 Difference]: Finished difference Result 477 states and 610 transitions. [2021-12-17 16:29:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:29:32,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-17 16:29:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:32,702 INFO L225 Difference]: With dead ends: 477 [2021-12-17 16:29:32,702 INFO L226 Difference]: Without dead ends: 255 [2021-12-17 16:29:32,705 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 [2021-12-17 16:29:32,708 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 904 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:32,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 199 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:29:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-17 16:29:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-12-17 16:29:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.3114754098360655) internal successors, (320), 254 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 320 transitions. [2021-12-17 16:29:32,733 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 320 transitions. Word has length 61 [2021-12-17 16:29:32,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:32,735 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 320 transitions. [2021-12-17 16:29:32,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 320 transitions. [2021-12-17 16:29:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 16:29:32,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:32,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:32,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:29:32,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 55190193, now seen corresponding path program 1 times [2021-12-17 16:29:32,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:32,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023481916] [2021-12-17 16:29:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:32,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:32,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:32,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023481916] [2021-12-17 16:29:32,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023481916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:32,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:32,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:29:32,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786696142] [2021-12-17 16:29:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:32,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:29:32,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:29:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:29:32,830 INFO L87 Difference]: Start difference. First operand 255 states and 320 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:32,978 INFO L93 Difference]: Finished difference Result 458 states and 587 transitions. [2021-12-17 16:29:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:29:32,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-17 16:29:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:32,980 INFO L225 Difference]: With dead ends: 458 [2021-12-17 16:29:32,980 INFO L226 Difference]: Without dead ends: 247 [2021-12-17 16:29:32,980 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 [2021-12-17 16:29:32,983 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 857 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:32,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 195 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:29:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-17 16:29:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-12-17 16:29:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 246 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 310 transitions. [2021-12-17 16:29:32,996 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 310 transitions. Word has length 62 [2021-12-17 16:29:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:32,997 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 310 transitions. [2021-12-17 16:29:32,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 310 transitions. [2021-12-17 16:29:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:29:32,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:33,000 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] [2021-12-17 16:29:33,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:29:33,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1176799625, now seen corresponding path program 1 times [2021-12-17 16:29:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:33,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215324445] [2021-12-17 16:29:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:33,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:33,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:33,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215324445] [2021-12-17 16:29:33,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215324445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:33,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:33,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:29:33,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146205734] [2021-12-17 16:29:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:33,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:33,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:33,254 INFO L87 Difference]: Start difference. First operand 247 states and 310 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:34,071 INFO L93 Difference]: Finished difference Result 562 states and 736 transitions. [2021-12-17 16:29:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:29:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-17 16:29:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:34,074 INFO L225 Difference]: With dead ends: 562 [2021-12-17 16:29:34,074 INFO L226 Difference]: Without dead ends: 503 [2021-12-17 16:29:34,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:29:34,075 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1767 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:34,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 1292 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:29:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-17 16:29:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 254. [2021-12-17 16:29:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 243 states have (on average 1.316872427983539) internal successors, (320), 253 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 320 transitions. [2021-12-17 16:29:34,089 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 320 transitions. Word has length 63 [2021-12-17 16:29:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:34,089 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 320 transitions. [2021-12-17 16:29:34,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 320 transitions. [2021-12-17 16:29:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:29:34,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:34,090 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] [2021-12-17 16:29:34,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:29:34,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:34,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash 735397477, now seen corresponding path program 1 times [2021-12-17 16:29:34,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:34,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529098827] [2021-12-17 16:29:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:34,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:34,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529098827] [2021-12-17 16:29:34,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529098827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:34,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:34,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:34,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604870798] [2021-12-17 16:29:34,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:34,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:34,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:34,211 INFO L87 Difference]: Start difference. First operand 254 states and 320 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:34,826 INFO L93 Difference]: Finished difference Result 581 states and 767 transitions. [2021-12-17 16:29:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:34,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-17 16:29:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:34,829 INFO L225 Difference]: With dead ends: 581 [2021-12-17 16:29:34,829 INFO L226 Difference]: Without dead ends: 493 [2021-12-17 16:29:34,830 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 [2021-12-17 16:29:34,830 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 2050 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:34,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 868 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-17 16:29:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 247. [2021-12-17 16:29:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.3093220338983051) internal successors, (309), 246 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 309 transitions. [2021-12-17 16:29:34,847 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 309 transitions. Word has length 63 [2021-12-17 16:29:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:34,847 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 309 transitions. [2021-12-17 16:29:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 309 transitions. [2021-12-17 16:29:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:29:34,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:34,849 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] [2021-12-17 16:29:34,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:29:34,849 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1585644853, now seen corresponding path program 1 times [2021-12-17 16:29:34,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701418631] [2021-12-17 16:29:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:34,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:35,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:35,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701418631] [2021-12-17 16:29:35,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701418631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:35,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:35,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:35,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847193451] [2021-12-17 16:29:35,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:35,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:35,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:35,004 INFO L87 Difference]: Start difference. First operand 247 states and 309 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:35,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:35,644 INFO L93 Difference]: Finished difference Result 555 states and 734 transitions. [2021-12-17 16:29:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-17 16:29:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:35,647 INFO L225 Difference]: With dead ends: 555 [2021-12-17 16:29:35,647 INFO L226 Difference]: Without dead ends: 489 [2021-12-17 16:29:35,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:29:35,648 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1285 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:35,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 1156 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:29:35,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-17 16:29:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 247. [2021-12-17 16:29:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.305084745762712) internal successors, (308), 246 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 308 transitions. [2021-12-17 16:29:35,664 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 308 transitions. Word has length 63 [2021-12-17 16:29:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:35,664 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 308 transitions. [2021-12-17 16:29:35,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 308 transitions. [2021-12-17 16:29:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:29:35,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:35,665 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] [2021-12-17 16:29:35,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:29:35,666 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash 202563885, now seen corresponding path program 1 times [2021-12-17 16:29:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:35,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528200004] [2021-12-17 16:29:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:35,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:35,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:35,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528200004] [2021-12-17 16:29:35,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528200004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:35,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:35,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:29:35,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613151222] [2021-12-17 16:29:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:35,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:29:35,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:29:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:29:35,759 INFO L87 Difference]: Start difference. First operand 247 states and 308 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:36,158 INFO L93 Difference]: Finished difference Result 486 states and 608 transitions. [2021-12-17 16:29:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:29:36,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-17 16:29:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:36,165 INFO L225 Difference]: With dead ends: 486 [2021-12-17 16:29:36,165 INFO L226 Difference]: Without dead ends: 353 [2021-12-17 16:29:36,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:29:36,167 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1346 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:36,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 627 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:29:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-17 16:29:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 247. [2021-12-17 16:29:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.3008474576271187) internal successors, (307), 246 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 307 transitions. [2021-12-17 16:29:36,189 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 307 transitions. Word has length 63 [2021-12-17 16:29:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:36,189 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 307 transitions. [2021-12-17 16:29:36,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 307 transitions. [2021-12-17 16:29:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:36,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:36,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:36,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:29:36,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash -620136770, now seen corresponding path program 1 times [2021-12-17 16:29:36,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943567390] [2021-12-17 16:29:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:36,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:36,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:36,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943567390] [2021-12-17 16:29:36,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943567390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:36,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:36,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:36,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268088223] [2021-12-17 16:29:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:36,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:36,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:36,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:36,295 INFO L87 Difference]: Start difference. First operand 247 states and 307 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:36,913 INFO L93 Difference]: Finished difference Result 540 states and 707 transitions. [2021-12-17 16:29:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:36,916 INFO L225 Difference]: With dead ends: 540 [2021-12-17 16:29:36,917 INFO L226 Difference]: Without dead ends: 481 [2021-12-17 16:29:36,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:29:36,918 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1769 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:36,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 953 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-12-17 16:29:36,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 247. [2021-12-17 16:29:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.2966101694915255) internal successors, (306), 246 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 306 transitions. [2021-12-17 16:29:36,933 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 306 transitions. Word has length 65 [2021-12-17 16:29:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:36,933 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 306 transitions. [2021-12-17 16:29:36,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 306 transitions. [2021-12-17 16:29:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:36,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:36,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:36,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:29:36,935 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1292060332, now seen corresponding path program 1 times [2021-12-17 16:29:36,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:36,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43921107] [2021-12-17 16:29:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:36,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:37,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:37,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43921107] [2021-12-17 16:29:37,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43921107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:37,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:37,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:29:37,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190295639] [2021-12-17 16:29:37,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:37,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:37,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:37,116 INFO L87 Difference]: Start difference. First operand 247 states and 306 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:38,432 INFO L93 Difference]: Finished difference Result 941 states and 1282 transitions. [2021-12-17 16:29:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:29:38,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:38,436 INFO L225 Difference]: With dead ends: 941 [2021-12-17 16:29:38,436 INFO L226 Difference]: Without dead ends: 870 [2021-12-17 16:29:38,437 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 [2021-12-17 16:29:38,438 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 3768 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3768 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:38,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3768 Valid, 1404 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:29:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-12-17 16:29:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 251. [2021-12-17 16:29:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 240 states have (on average 1.2916666666666667) internal successors, (310), 250 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 310 transitions. [2021-12-17 16:29:38,461 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 310 transitions. Word has length 65 [2021-12-17 16:29:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:38,462 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 310 transitions. [2021-12-17 16:29:38,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 310 transitions. [2021-12-17 16:29:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:38,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:38,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:38,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:29:38,463 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash -109241464, now seen corresponding path program 1 times [2021-12-17 16:29:38,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:38,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522074712] [2021-12-17 16:29:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:38,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:38,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:38,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522074712] [2021-12-17 16:29:38,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522074712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:38,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:38,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:38,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457936559] [2021-12-17 16:29:38,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:38,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:38,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:38,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:38,553 INFO L87 Difference]: Start difference. First operand 251 states and 310 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:39,076 INFO L93 Difference]: Finished difference Result 541 states and 707 transitions. [2021-12-17 16:29:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:39,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:39,081 INFO L225 Difference]: With dead ends: 541 [2021-12-17 16:29:39,081 INFO L226 Difference]: Without dead ends: 485 [2021-12-17 16:29:39,081 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 [2021-12-17 16:29:39,082 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1388 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:39,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 921 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-17 16:29:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 251. [2021-12-17 16:29:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 240 states have (on average 1.2875) internal successors, (309), 250 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 309 transitions. [2021-12-17 16:29:39,101 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 309 transitions. Word has length 65 [2021-12-17 16:29:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:39,101 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 309 transitions. [2021-12-17 16:29:39,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 309 transitions. [2021-12-17 16:29:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:39,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:39,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:39,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:29:39,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1375273345, now seen corresponding path program 1 times [2021-12-17 16:29:39,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394883501] [2021-12-17 16:29:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:39,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:39,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:39,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394883501] [2021-12-17 16:29:39,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394883501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:39,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:39,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:29:39,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969930712] [2021-12-17 16:29:39,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:39,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:39,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:39,302 INFO L87 Difference]: Start difference. First operand 251 states and 309 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:40,491 INFO L93 Difference]: Finished difference Result 779 states and 1041 transitions. [2021-12-17 16:29:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:29:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:40,494 INFO L225 Difference]: With dead ends: 779 [2021-12-17 16:29:40,494 INFO L226 Difference]: Without dead ends: 774 [2021-12-17 16:29:40,495 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 [2021-12-17 16:29:40,495 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 2875 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:40,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2875 Valid, 1395 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:29:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-17 16:29:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 255. [2021-12-17 16:29:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.2827868852459017) internal successors, (313), 254 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 313 transitions. [2021-12-17 16:29:40,519 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 313 transitions. Word has length 65 [2021-12-17 16:29:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:40,519 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 313 transitions. [2021-12-17 16:29:40,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 313 transitions. [2021-12-17 16:29:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:40,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:40,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:40,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:29:40,521 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash -636059456, now seen corresponding path program 1 times [2021-12-17 16:29:40,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:40,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581341545] [2021-12-17 16:29:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:40,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:40,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:40,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581341545] [2021-12-17 16:29:40,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581341545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:40,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:40,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:40,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881832959] [2021-12-17 16:29:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:40,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:40,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:40,619 INFO L87 Difference]: Start difference. First operand 255 states and 313 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:41,231 INFO L93 Difference]: Finished difference Result 595 states and 776 transitions. [2021-12-17 16:29:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:41,234 INFO L225 Difference]: With dead ends: 595 [2021-12-17 16:29:41,234 INFO L226 Difference]: Without dead ends: 501 [2021-12-17 16:29:41,235 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 [2021-12-17 16:29:41,236 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 1677 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:41,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 1196 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-17 16:29:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 255. [2021-12-17 16:29:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.278688524590164) internal successors, (312), 254 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 312 transitions. [2021-12-17 16:29:41,261 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 312 transitions. Word has length 65 [2021-12-17 16:29:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:41,261 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 312 transitions. [2021-12-17 16:29:41,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 312 transitions. [2021-12-17 16:29:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:41,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:41,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:41,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:29:41,263 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2058271748, now seen corresponding path program 1 times [2021-12-17 16:29:41,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:41,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491342647] [2021-12-17 16:29:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:41,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:41,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491342647] [2021-12-17 16:29:41,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491342647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:41,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:41,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:41,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988147133] [2021-12-17 16:29:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:41,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:41,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:41,366 INFO L87 Difference]: Start difference. First operand 255 states and 312 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:41,932 INFO L93 Difference]: Finished difference Result 490 states and 627 transitions. [2021-12-17 16:29:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:41,934 INFO L225 Difference]: With dead ends: 490 [2021-12-17 16:29:41,934 INFO L226 Difference]: Without dead ends: 485 [2021-12-17 16:29:41,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:29:41,936 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1767 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:41,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 942 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-17 16:29:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 255. [2021-12-17 16:29:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.2745901639344261) internal successors, (311), 254 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 311 transitions. [2021-12-17 16:29:41,960 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 311 transitions. Word has length 65 [2021-12-17 16:29:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:41,961 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 311 transitions. [2021-12-17 16:29:41,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 311 transitions. [2021-12-17 16:29:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:29:41,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:41,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:41,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:29:41,962 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -324498446, now seen corresponding path program 1 times [2021-12-17 16:29:41,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:41,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837091035] [2021-12-17 16:29:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:41,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:42,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:42,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837091035] [2021-12-17 16:29:42,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837091035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:42,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:42,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:42,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043103222] [2021-12-17 16:29:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:42,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:42,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:42,075 INFO L87 Difference]: Start difference. First operand 255 states and 311 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:42,699 INFO L93 Difference]: Finished difference Result 510 states and 655 transitions. [2021-12-17 16:29:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:42,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:29:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:42,702 INFO L225 Difference]: With dead ends: 510 [2021-12-17 16:29:42,702 INFO L226 Difference]: Without dead ends: 493 [2021-12-17 16:29:42,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:29:42,705 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1662 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:42,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 1125 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-17 16:29:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 255. [2021-12-17 16:29:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.2704918032786885) internal successors, (310), 254 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 310 transitions. [2021-12-17 16:29:42,733 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 310 transitions. Word has length 65 [2021-12-17 16:29:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:42,733 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 310 transitions. [2021-12-17 16:29:42,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 310 transitions. [2021-12-17 16:29:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:29:42,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:42,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:42,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:29:42,735 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:42,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 50031272, now seen corresponding path program 1 times [2021-12-17 16:29:42,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:42,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946927285] [2021-12-17 16:29:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:42,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:42,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:42,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946927285] [2021-12-17 16:29:42,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946927285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:42,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:42,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:42,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839006513] [2021-12-17 16:29:42,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:42,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:42,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:42,835 INFO L87 Difference]: Start difference. First operand 255 states and 310 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:43,420 INFO L93 Difference]: Finished difference Result 490 states and 625 transitions. [2021-12-17 16:29:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:29:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:43,422 INFO L225 Difference]: With dead ends: 490 [2021-12-17 16:29:43,422 INFO L226 Difference]: Without dead ends: 485 [2021-12-17 16:29:43,422 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 [2021-12-17 16:29:43,423 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1408 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:43,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1408 Valid, 1114 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-17 16:29:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 251. [2021-12-17 16:29:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 240 states have (on average 1.2708333333333333) internal successors, (305), 250 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 305 transitions. [2021-12-17 16:29:43,453 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 305 transitions. Word has length 66 [2021-12-17 16:29:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:43,453 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 305 transitions. [2021-12-17 16:29:43,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 305 transitions. [2021-12-17 16:29:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:29:43,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:43,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:43,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:29:43,455 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash -849466761, now seen corresponding path program 1 times [2021-12-17 16:29:43,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:43,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792168058] [2021-12-17 16:29:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:43,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:43,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:43,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792168058] [2021-12-17 16:29:43,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792168058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:43,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:43,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:43,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077356121] [2021-12-17 16:29:43,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:43,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:43,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:43,538 INFO L87 Difference]: Start difference. First operand 251 states and 305 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:44,108 INFO L93 Difference]: Finished difference Result 560 states and 729 transitions. [2021-12-17 16:29:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:44,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:29:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:44,110 INFO L225 Difference]: With dead ends: 560 [2021-12-17 16:29:44,110 INFO L226 Difference]: Without dead ends: 489 [2021-12-17 16:29:44,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:29:44,111 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1157 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:44,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 1211 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:44,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-17 16:29:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 247. [2021-12-17 16:29:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.271186440677966) internal successors, (300), 246 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 300 transitions. [2021-12-17 16:29:44,138 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 300 transitions. Word has length 66 [2021-12-17 16:29:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:44,139 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 300 transitions. [2021-12-17 16:29:44,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 300 transitions. [2021-12-17 16:29:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:29:44,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:44,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:44,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:29:44,140 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -809481061, now seen corresponding path program 1 times [2021-12-17 16:29:44,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597002994] [2021-12-17 16:29:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:44,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:44,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597002994] [2021-12-17 16:29:44,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597002994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:44,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:44,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-17 16:29:44,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84179680] [2021-12-17 16:29:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:44,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 16:29:44,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 16:29:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:29:44,594 INFO L87 Difference]: Start difference. First operand 247 states and 300 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:45,794 INFO L93 Difference]: Finished difference Result 729 states and 947 transitions. [2021-12-17 16:29:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:29:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:29:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:45,797 INFO L225 Difference]: With dead ends: 729 [2021-12-17 16:29:45,797 INFO L226 Difference]: Without dead ends: 616 [2021-12-17 16:29:45,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:29:45,798 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 2241 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:45,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2241 Valid, 3103 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:29:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-17 16:29:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 223. [2021-12-17 16:29:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 213 states have (on average 1.2629107981220657) internal successors, (269), 222 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 269 transitions. [2021-12-17 16:29:45,829 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 269 transitions. Word has length 67 [2021-12-17 16:29:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:45,830 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 269 transitions. [2021-12-17 16:29:45,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 269 transitions. [2021-12-17 16:29:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:29:45,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:45,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:45,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:29:45,832 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash -827796874, now seen corresponding path program 1 times [2021-12-17 16:29:45,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529184272] [2021-12-17 16:29:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:45,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:46,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:46,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529184272] [2021-12-17 16:29:46,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529184272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:46,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:46,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-17 16:29:46,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831928172] [2021-12-17 16:29:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:46,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 16:29:46,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:46,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 16:29:46,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:29:46,537 INFO L87 Difference]: Start difference. First operand 223 states and 269 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:48,754 INFO L93 Difference]: Finished difference Result 656 states and 819 transitions. [2021-12-17 16:29:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 16:29:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:29:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:48,756 INFO L225 Difference]: With dead ends: 656 [2021-12-17 16:29:48,756 INFO L226 Difference]: Without dead ends: 598 [2021-12-17 16:29:48,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2021-12-17 16:29:48,757 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 2267 mSDsluCounter, 5416 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:48,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2267 Valid, 5921 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 16:29:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-17 16:29:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 238. [2021-12-17 16:29:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.2719298245614035) internal successors, (290), 237 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2021-12-17 16:29:48,788 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 67 [2021-12-17 16:29:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:48,788 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2021-12-17 16:29:48,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2021-12-17 16:29:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:29:48,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:48,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:48,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:29:48,789 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 455689729, now seen corresponding path program 1 times [2021-12-17 16:29:48,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:48,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923828607] [2021-12-17 16:29:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:48,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:49,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:49,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923828607] [2021-12-17 16:29:49,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923828607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:49,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:49,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:29:49,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47763499] [2021-12-17 16:29:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:49,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:29:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:29:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:29:49,080 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:49,923 INFO L93 Difference]: Finished difference Result 531 states and 656 transitions. [2021-12-17 16:29:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:29:49,923 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:29:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:49,925 INFO L225 Difference]: With dead ends: 531 [2021-12-17 16:29:49,925 INFO L226 Difference]: Without dead ends: 527 [2021-12-17 16:29:49,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:29:49,926 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1294 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:49,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 2278 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:29:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-12-17 16:29:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 234. [2021-12-17 16:29:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 225 states have (on average 1.271111111111111) internal successors, (286), 233 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 286 transitions. [2021-12-17 16:29:49,960 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 286 transitions. Word has length 67 [2021-12-17 16:29:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:49,960 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 286 transitions. [2021-12-17 16:29:49,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 286 transitions. [2021-12-17 16:29:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:29:49,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:49,961 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] [2021-12-17 16:29:49,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:29:49,962 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1324827419, now seen corresponding path program 1 times [2021-12-17 16:29:49,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:49,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150527081] [2021-12-17 16:29:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:49,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:50,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:50,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150527081] [2021-12-17 16:29:50,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150527081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:50,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:50,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:29:50,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236568215] [2021-12-17 16:29:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:50,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:50,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:50,194 INFO L87 Difference]: Start difference. First operand 234 states and 286 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:50,821 INFO L93 Difference]: Finished difference Result 668 states and 886 transitions. [2021-12-17 16:29:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:29:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:29:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:50,822 INFO L225 Difference]: With dead ends: 668 [2021-12-17 16:29:50,822 INFO L226 Difference]: Without dead ends: 585 [2021-12-17 16:29:50,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:29:50,823 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1677 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:50,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 2607 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:29:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-12-17 16:29:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 205. [2021-12-17 16:29:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 198 states have (on average 1.2727272727272727) internal successors, (252), 204 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2021-12-17 16:29:50,860 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 67 [2021-12-17 16:29:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:50,860 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2021-12-17 16:29:50,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2021-12-17 16:29:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:29:50,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:50,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:50,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:29:50,862 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:50,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1527682650, now seen corresponding path program 1 times [2021-12-17 16:29:50,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:50,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043225330] [2021-12-17 16:29:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:50,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:51,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:51,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043225330] [2021-12-17 16:29:51,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043225330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:51,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:51,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:29:51,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006304585] [2021-12-17 16:29:51,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:51,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:51,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:51,124 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:51,666 INFO L93 Difference]: Finished difference Result 362 states and 461 transitions. [2021-12-17 16:29:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:29:51,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:29:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:51,668 INFO L225 Difference]: With dead ends: 362 [2021-12-17 16:29:51,668 INFO L226 Difference]: Without dead ends: 304 [2021-12-17 16:29:51,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:29:51,669 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1086 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:51,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 945 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:29:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-17 16:29:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 201. [2021-12-17 16:29:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 200 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 247 transitions. [2021-12-17 16:29:51,701 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 247 transitions. Word has length 68 [2021-12-17 16:29:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:51,701 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 247 transitions. [2021-12-17 16:29:51,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 247 transitions. [2021-12-17 16:29:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:29:51,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:51,702 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] [2021-12-17 16:29:51,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:29:51,703 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:51,703 INFO L85 PathProgramCache]: Analyzing trace with hash 986767498, now seen corresponding path program 1 times [2021-12-17 16:29:51,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:51,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621117774] [2021-12-17 16:29:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:51,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:51,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:51,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621117774] [2021-12-17 16:29:51,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621117774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:51,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:51,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:29:51,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160269090] [2021-12-17 16:29:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:51,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:51,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:51,936 INFO L87 Difference]: Start difference. First operand 201 states and 247 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:52,338 INFO L93 Difference]: Finished difference Result 364 states and 468 transitions. [2021-12-17 16:29:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:29:52,339 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:29:52,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:52,340 INFO L225 Difference]: With dead ends: 364 [2021-12-17 16:29:52,340 INFO L226 Difference]: Without dead ends: 299 [2021-12-17 16:29:52,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-12-17 16:29:52,341 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 831 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:52,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1919 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:29:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-17 16:29:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 190. [2021-12-17 16:29:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.2594594594594595) internal successors, (233), 189 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2021-12-17 16:29:52,376 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 68 [2021-12-17 16:29:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:52,376 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2021-12-17 16:29:52,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2021-12-17 16:29:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:29:52,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:52,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:52,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:29:52,377 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -922376210, now seen corresponding path program 1 times [2021-12-17 16:29:52,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:52,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612903073] [2021-12-17 16:29:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:52,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:53,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:53,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612903073] [2021-12-17 16:29:53,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612903073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:53,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:53,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-17 16:29:53,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297673814] [2021-12-17 16:29:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:53,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 16:29:53,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 16:29:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:29:53,233 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:56,966 INFO L93 Difference]: Finished difference Result 836 states and 1110 transitions. [2021-12-17 16:29:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 16:29:56,966 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:29:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:56,968 INFO L225 Difference]: With dead ends: 836 [2021-12-17 16:29:56,969 INFO L226 Difference]: Without dead ends: 778 [2021-12-17 16:29:56,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=456, Invalid=2094, Unknown=0, NotChecked=0, Total=2550 [2021-12-17 16:29:56,970 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 2685 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:56,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2685 Valid, 4171 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 16:29:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-17 16:29:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 185. [2021-12-17 16:29:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.261111111111111) internal successors, (227), 184 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 227 transitions. [2021-12-17 16:29:57,002 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 227 transitions. Word has length 68 [2021-12-17 16:29:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:57,002 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 227 transitions. [2021-12-17 16:29:57,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 227 transitions. [2021-12-17 16:29:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:29:57,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:57,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:57,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:29:57,004 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:57,004 INFO L85 PathProgramCache]: Analyzing trace with hash 823611388, now seen corresponding path program 1 times [2021-12-17 16:29:57,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:57,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159574412] [2021-12-17 16:29:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:57,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:57,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:57,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159574412] [2021-12-17 16:29:57,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159574412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:57,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:57,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:29:57,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363223039] [2021-12-17 16:29:57,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:57,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:29:57,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:29:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:29:57,132 INFO L87 Difference]: Start difference. First operand 185 states and 227 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:57,627 INFO L93 Difference]: Finished difference Result 391 states and 510 transitions. [2021-12-17 16:29:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:29:57,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:29:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:57,629 INFO L225 Difference]: With dead ends: 391 [2021-12-17 16:29:57,629 INFO L226 Difference]: Without dead ends: 384 [2021-12-17 16:29:57,630 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 [2021-12-17 16:29:57,630 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1296 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:57,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1296 Valid, 725 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:29:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-17 16:29:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 185. [2021-12-17 16:29:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.25) internal successors, (225), 184 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2021-12-17 16:29:57,680 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 68 [2021-12-17 16:29:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:57,680 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2021-12-17 16:29:57,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2021-12-17 16:29:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:29:57,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:57,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:57,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:29:57,681 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 520441226, now seen corresponding path program 1 times [2021-12-17 16:29:57,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:57,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906085071] [2021-12-17 16:29:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:57,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:57,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906085071] [2021-12-17 16:29:57,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906085071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:57,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:57,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:29:57,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455571984] [2021-12-17 16:29:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:57,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:57,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:57,851 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:58,907 INFO L93 Difference]: Finished difference Result 832 states and 1141 transitions. [2021-12-17 16:29:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:29:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:29:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:58,909 INFO L225 Difference]: With dead ends: 832 [2021-12-17 16:29:58,909 INFO L226 Difference]: Without dead ends: 760 [2021-12-17 16:29:58,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:29:58,910 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 4797 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4797 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:58,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4797 Valid, 875 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:29:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-12-17 16:29:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 185. [2021-12-17 16:29:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.2444444444444445) internal successors, (224), 184 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2021-12-17 16:29:58,960 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 68 [2021-12-17 16:29:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:58,961 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2021-12-17 16:29:58,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2021-12-17 16:29:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:29:58,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:58,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:58,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:29:58,965 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1191137787, now seen corresponding path program 1 times [2021-12-17 16:29:58,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:58,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251706183] [2021-12-17 16:29:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:58,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:59,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:59,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251706183] [2021-12-17 16:29:59,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251706183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:59,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:59,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:29:59,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894025293] [2021-12-17 16:29:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:59,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:59,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:59,197 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:59,646 INFO L93 Difference]: Finished difference Result 458 states and 603 transitions. [2021-12-17 16:29:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:29:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:29:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:59,648 INFO L225 Difference]: With dead ends: 458 [2021-12-17 16:29:59,648 INFO L226 Difference]: Without dead ends: 384 [2021-12-17 16:29:59,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:29:59,649 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1084 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:59,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 1499 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:29:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-17 16:29:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 163. [2021-12-17 16:29:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.23125) internal successors, (197), 162 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-12-17 16:29:59,676 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 68 [2021-12-17 16:29:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:59,677 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-12-17 16:29:59,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2021-12-17 16:29:59,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:29:59,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:59,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:59,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:29:59,677 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:29:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:59,678 INFO L85 PathProgramCache]: Analyzing trace with hash 601989041, now seen corresponding path program 1 times [2021-12-17 16:29:59,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:59,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814679175] [2021-12-17 16:29:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:59,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:59,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:59,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814679175] [2021-12-17 16:29:59,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814679175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:59,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:59,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:29:59,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776673304] [2021-12-17 16:29:59,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:59,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:59,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:59,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:59,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:59,823 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:00,532 INFO L93 Difference]: Finished difference Result 408 states and 530 transitions. [2021-12-17 16:30:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:30:00,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-17 16:30:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:00,533 INFO L225 Difference]: With dead ends: 408 [2021-12-17 16:30:00,533 INFO L226 Difference]: Without dead ends: 401 [2021-12-17 16:30:00,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:30:00,534 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 2102 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:00,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 571 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-17 16:30:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 167. [2021-12-17 16:30:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 164 states have (on average 1.225609756097561) internal successors, (201), 166 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2021-12-17 16:30:00,580 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 69 [2021-12-17 16:30:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:00,580 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2021-12-17 16:30:00,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2021-12-17 16:30:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:30:00,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:00,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:00,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:30:00,581 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1317093723, now seen corresponding path program 1 times [2021-12-17 16:30:00,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:00,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763960570] [2021-12-17 16:30:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:00,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:00,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:00,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763960570] [2021-12-17 16:30:00,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763960570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:00,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:00,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:00,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889776849] [2021-12-17 16:30:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:00,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:00,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:00,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:00,667 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:01,009 INFO L93 Difference]: Finished difference Result 316 states and 405 transitions. [2021-12-17 16:30:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:30:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-17 16:30:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:01,010 INFO L225 Difference]: With dead ends: 316 [2021-12-17 16:30:01,010 INFO L226 Difference]: Without dead ends: 244 [2021-12-17 16:30:01,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-17 16:30:01,011 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 503 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:01,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 578 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-17 16:30:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 163. [2021-12-17 16:30:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.225) internal successors, (196), 162 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 196 transitions. [2021-12-17 16:30:01,045 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 196 transitions. Word has length 69 [2021-12-17 16:30:01,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:01,046 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 196 transitions. [2021-12-17 16:30:01,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 196 transitions. [2021-12-17 16:30:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:30:01,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:01,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:01,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:30:01,047 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -880982966, now seen corresponding path program 1 times [2021-12-17 16:30:01,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:01,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862156178] [2021-12-17 16:30:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:01,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:01,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:01,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862156178] [2021-12-17 16:30:01,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862156178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:01,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:01,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:01,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24190637] [2021-12-17 16:30:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:01,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:01,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:01,131 INFO L87 Difference]: Start difference. First operand 163 states and 196 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:01,452 INFO L93 Difference]: Finished difference Result 255 states and 314 transitions. [2021-12-17 16:30:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:30:01,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:30:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:01,453 INFO L225 Difference]: With dead ends: 255 [2021-12-17 16:30:01,453 INFO L226 Difference]: Without dead ends: 248 [2021-12-17 16:30:01,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-12-17 16:30:01,454 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 583 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:01,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 715 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-17 16:30:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 159. [2021-12-17 16:30:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.2243589743589745) internal successors, (191), 158 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 191 transitions. [2021-12-17 16:30:01,486 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 191 transitions. Word has length 70 [2021-12-17 16:30:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:01,486 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 191 transitions. [2021-12-17 16:30:01,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 191 transitions. [2021-12-17 16:30:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:30:01,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:01,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:01,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 16:30:01,487 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1997555533, now seen corresponding path program 1 times [2021-12-17 16:30:01,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:01,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694803018] [2021-12-17 16:30:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:01,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:01,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:01,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694803018] [2021-12-17 16:30:01,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694803018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:01,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:01,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:30:01,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551856313] [2021-12-17 16:30:01,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:01,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:30:01,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:30:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:30:01,749 INFO L87 Difference]: Start difference. First operand 159 states and 191 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:02,670 INFO L93 Difference]: Finished difference Result 463 states and 617 transitions. [2021-12-17 16:30:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:02,671 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:30:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:02,672 INFO L225 Difference]: With dead ends: 463 [2021-12-17 16:30:02,672 INFO L226 Difference]: Without dead ends: 457 [2021-12-17 16:30:02,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2021-12-17 16:30:02,673 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 1073 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:02,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 3277 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:30:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-12-17 16:30:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 165. [2021-12-17 16:30:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.228395061728395) internal successors, (199), 164 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 199 transitions. [2021-12-17 16:30:02,701 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 199 transitions. Word has length 70 [2021-12-17 16:30:02,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:02,702 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 199 transitions. [2021-12-17 16:30:02,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 199 transitions. [2021-12-17 16:30:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 16:30:02,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:02,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:02,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 16:30:02,703 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash 106947905, now seen corresponding path program 1 times [2021-12-17 16:30:02,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:02,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487766466] [2021-12-17 16:30:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:02,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:03,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487766466] [2021-12-17 16:30:03,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487766466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:03,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:03,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 16:30:03,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9561931] [2021-12-17 16:30:03,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:03,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 16:30:03,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 16:30:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:30:03,028 INFO L87 Difference]: Start difference. First operand 165 states and 199 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:04,048 INFO L93 Difference]: Finished difference Result 317 states and 407 transitions. [2021-12-17 16:30:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:04,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-17 16:30:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:04,050 INFO L225 Difference]: With dead ends: 317 [2021-12-17 16:30:04,050 INFO L226 Difference]: Without dead ends: 293 [2021-12-17 16:30:04,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:30:04,051 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1053 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:04,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 1494 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-17 16:30:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 141. [2021-12-17 16:30:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 139 states have (on average 1.2446043165467626) internal successors, (173), 140 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 173 transitions. [2021-12-17 16:30:04,090 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 173 transitions. Word has length 71 [2021-12-17 16:30:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:04,091 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 173 transitions. [2021-12-17 16:30:04,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 173 transitions. [2021-12-17 16:30:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 16:30:04,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:04,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:04,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 16:30:04,092 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:04,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1979298898, now seen corresponding path program 1 times [2021-12-17 16:30:04,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:04,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648496710] [2021-12-17 16:30:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:04,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:04,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:04,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648496710] [2021-12-17 16:30:04,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648496710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:04,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:04,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:30:04,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088107423] [2021-12-17 16:30:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:04,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:30:04,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:30:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:30:04,350 INFO L87 Difference]: Start difference. First operand 141 states and 173 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:05,231 INFO L93 Difference]: Finished difference Result 552 states and 759 transitions. [2021-12-17 16:30:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:30:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-17 16:30:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:05,233 INFO L225 Difference]: With dead ends: 552 [2021-12-17 16:30:05,233 INFO L226 Difference]: Without dead ends: 546 [2021-12-17 16:30:05,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:30:05,234 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 1338 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:05,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 2548 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-12-17 16:30:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 129. [2021-12-17 16:30:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.2421875) internal successors, (159), 128 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2021-12-17 16:30:05,268 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 71 [2021-12-17 16:30:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:05,268 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2021-12-17 16:30:05,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2021-12-17 16:30:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:30:05,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:05,269 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] [2021-12-17 16:30:05,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 16:30:05,269 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:05,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:05,270 INFO L85 PathProgramCache]: Analyzing trace with hash 161471129, now seen corresponding path program 1 times [2021-12-17 16:30:05,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:05,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131066291] [2021-12-17 16:30:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:05,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:05,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131066291] [2021-12-17 16:30:05,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131066291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:05,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:05,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:05,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916962932] [2021-12-17 16:30:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:05,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:05,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:05,323 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-17 16:30:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:05,653 INFO L93 Difference]: Finished difference Result 561 states and 791 transitions. [2021-12-17 16:30:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:30:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 [2021-12-17 16:30:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:05,655 INFO L225 Difference]: With dead ends: 561 [2021-12-17 16:30:05,655 INFO L226 Difference]: Without dead ends: 507 [2021-12-17 16:30:05,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:30:05,656 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 834 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:05,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 1258 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:30:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-12-17 16:30:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 181. [2021-12-17 16:30:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.3055555555555556) internal successors, (235), 180 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 235 transitions. [2021-12-17 16:30:05,726 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 235 transitions. Word has length 93 [2021-12-17 16:30:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:05,726 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 235 transitions. [2021-12-17 16:30:05,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2021-12-17 16:30:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 235 transitions. [2021-12-17 16:30:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:05,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:05,728 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] [2021-12-17 16:30:05,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 16:30:05,728 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -880942767, now seen corresponding path program 1 times [2021-12-17 16:30:05,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:05,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895556513] [2021-12-17 16:30:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:05,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:05,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:05,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895556513] [2021-12-17 16:30:05,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895556513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:05,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:05,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:05,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818404268] [2021-12-17 16:30:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:05,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:05,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:05,785 INFO L87 Difference]: Start difference. First operand 181 states and 235 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:06,097 INFO L93 Difference]: Finished difference Result 659 states and 932 transitions. [2021-12-17 16:30:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2021-12-17 16:30:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:06,100 INFO L225 Difference]: With dead ends: 659 [2021-12-17 16:30:06,100 INFO L226 Difference]: Without dead ends: 553 [2021-12-17 16:30:06,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:06,100 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 643 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:06,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 752 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-12-17 16:30:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 285. [2021-12-17 16:30:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3661971830985915) internal successors, (388), 284 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 388 transitions. [2021-12-17 16:30:06,199 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 388 transitions. Word has length 95 [2021-12-17 16:30:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:06,200 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 388 transitions. [2021-12-17 16:30:06,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 388 transitions. [2021-12-17 16:30:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:06,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:06,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:06,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 16:30:06,201 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash 284809815, now seen corresponding path program 1 times [2021-12-17 16:30:06,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:06,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55023331] [2021-12-17 16:30:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:06,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:06,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:06,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55023331] [2021-12-17 16:30:06,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55023331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:06,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:06,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:06,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703945970] [2021-12-17 16:30:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:06,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:06,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:06,265 INFO L87 Difference]: Start difference. First operand 285 states and 388 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:06,601 INFO L93 Difference]: Finished difference Result 763 states and 1085 transitions. [2021-12-17 16:30:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2021-12-17 16:30:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:06,604 INFO L225 Difference]: With dead ends: 763 [2021-12-17 16:30:06,604 INFO L226 Difference]: Without dead ends: 657 [2021-12-17 16:30:06,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:06,604 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 643 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:06,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 702 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-17 16:30:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 441. [2021-12-17 16:30:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.4022727272727273) internal successors, (617), 440 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 617 transitions. [2021-12-17 16:30:06,769 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 617 transitions. Word has length 95 [2021-12-17 16:30:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:06,770 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 617 transitions. [2021-12-17 16:30:06,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 617 transitions. [2021-12-17 16:30:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:06,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:06,771 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] [2021-12-17 16:30:06,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 16:30:06,771 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -736748582, now seen corresponding path program 1 times [2021-12-17 16:30:06,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:06,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938907566] [2021-12-17 16:30:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:06,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:06,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:06,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938907566] [2021-12-17 16:30:06,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938907566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:06,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:06,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:06,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617413697] [2021-12-17 16:30:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:06,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:06,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:06,886 INFO L87 Difference]: Start difference. First operand 441 states and 617 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:07,160 INFO L93 Difference]: Finished difference Result 809 states and 1155 transitions. [2021-12-17 16:30:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2021-12-17 16:30:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:07,162 INFO L225 Difference]: With dead ends: 809 [2021-12-17 16:30:07,162 INFO L226 Difference]: Without dead ends: 443 [2021-12-17 16:30:07,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:30:07,163 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 482 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:07,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 374 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-17 16:30:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2021-12-17 16:30:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.393181818181818) internal successors, (613), 440 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 613 transitions. [2021-12-17 16:30:07,324 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 613 transitions. Word has length 95 [2021-12-17 16:30:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:07,324 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 613 transitions. [2021-12-17 16:30:07,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 613 transitions. [2021-12-17 16:30:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:07,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:07,326 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] [2021-12-17 16:30:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 16:30:07,326 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1506041575, now seen corresponding path program 1 times [2021-12-17 16:30:07,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:07,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692252005] [2021-12-17 16:30:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:07,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:07,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692252005] [2021-12-17 16:30:07,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692252005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:07,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:07,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:07,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856726485] [2021-12-17 16:30:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:07,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:07,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:07,360 INFO L87 Difference]: Start difference. First operand 441 states and 613 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2021-12-17 16:30:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:07,699 INFO L93 Difference]: Finished difference Result 1128 states and 1604 transitions. [2021-12-17 16:30:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:07,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 [2021-12-17 16:30:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:07,702 INFO L225 Difference]: With dead ends: 1128 [2021-12-17 16:30:07,702 INFO L226 Difference]: Without dead ends: 762 [2021-12-17 16:30:07,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:07,703 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 66 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:07,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 365 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-12-17 16:30:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 760. [2021-12-17 16:30:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 1.391304347826087) internal successors, (1056), 759 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1056 transitions. [2021-12-17 16:30:08,040 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1056 transitions. Word has length 95 [2021-12-17 16:30:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:08,040 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1056 transitions. [2021-12-17 16:30:08,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2021-12-17 16:30:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1056 transitions. [2021-12-17 16:30:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:08,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:08,042 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] [2021-12-17 16:30:08,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 16:30:08,042 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:08,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1675387619, now seen corresponding path program 1 times [2021-12-17 16:30:08,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:08,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065157782] [2021-12-17 16:30:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:08,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:08,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:08,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065157782] [2021-12-17 16:30:08,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065157782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:08,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:08,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:08,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288421303] [2021-12-17 16:30:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:08,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:08,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:08,104 INFO L87 Difference]: Start difference. First operand 760 states and 1056 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:08,715 INFO L93 Difference]: Finished difference Result 1550 states and 2181 transitions. [2021-12-17 16:30:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2021-12-17 16:30:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:08,719 INFO L225 Difference]: With dead ends: 1550 [2021-12-17 16:30:08,719 INFO L226 Difference]: Without dead ends: 1353 [2021-12-17 16:30:08,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:08,720 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 608 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:08,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 760 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-12-17 16:30:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 955. [2021-12-17 16:30:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 954 states have (on average 1.39832285115304) internal successors, (1334), 954 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1334 transitions. [2021-12-17 16:30:09,087 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1334 transitions. Word has length 95 [2021-12-17 16:30:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:09,088 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1334 transitions. [2021-12-17 16:30:09,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1334 transitions. [2021-12-17 16:30:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:09,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:09,089 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] [2021-12-17 16:30:09,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 16:30:09,090 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1554031907, now seen corresponding path program 1 times [2021-12-17 16:30:09,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:09,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140872488] [2021-12-17 16:30:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:09,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:09,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:09,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140872488] [2021-12-17 16:30:09,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140872488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:09,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:09,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:09,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097047435] [2021-12-17 16:30:09,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:09,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:09,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:09,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:09,147 INFO L87 Difference]: Start difference. First operand 955 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:09,847 INFO L93 Difference]: Finished difference Result 1745 states and 2459 transitions. [2021-12-17 16:30:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2021-12-17 16:30:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:09,851 INFO L225 Difference]: With dead ends: 1745 [2021-12-17 16:30:09,851 INFO L226 Difference]: Without dead ends: 1548 [2021-12-17 16:30:09,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:09,852 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 580 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:09,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 796 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-12-17 16:30:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1150. [2021-12-17 16:30:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.4029590948651) internal successors, (1612), 1149 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1612 transitions. [2021-12-17 16:30:10,310 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1612 transitions. Word has length 95 [2021-12-17 16:30:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:10,310 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1612 transitions. [2021-12-17 16:30:10,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-12-17 16:30:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1612 transitions. [2021-12-17 16:30:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:30:10,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:10,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:10,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 16:30:10,312 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1423537109, now seen corresponding path program 1 times [2021-12-17 16:30:10,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:10,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509936678] [2021-12-17 16:30:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:10,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:10,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509936678] [2021-12-17 16:30:10,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509936678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:10,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:10,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:10,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971454979] [2021-12-17 16:30:10,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:10,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:10,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:10,356 INFO L87 Difference]: Start difference. First operand 1150 states and 1612 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:11,149 INFO L93 Difference]: Finished difference Result 2882 states and 4059 transitions. [2021-12-17 16:30:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:30:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:11,154 INFO L225 Difference]: With dead ends: 2882 [2021-12-17 16:30:11,154 INFO L226 Difference]: Without dead ends: 1807 [2021-12-17 16:30:11,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:11,156 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 77 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:11,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2021-12-17 16:30:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1717. [2021-12-17 16:30:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.3951048951048952) internal successors, (2394), 1716 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2394 transitions. [2021-12-17 16:30:11,858 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2394 transitions. Word has length 96 [2021-12-17 16:30:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:11,858 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 2394 transitions. [2021-12-17 16:30:11,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2394 transitions. [2021-12-17 16:30:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:30:11,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:11,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:11,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 16:30:11,859 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1571382276, now seen corresponding path program 1 times [2021-12-17 16:30:11,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:11,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670909753] [2021-12-17 16:30:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:11,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:11,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670909753] [2021-12-17 16:30:11,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670909753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:11,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:11,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:11,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300724852] [2021-12-17 16:30:11,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:11,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:11,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:11,929 INFO L87 Difference]: Start difference. First operand 1717 states and 2394 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:13,380 INFO L93 Difference]: Finished difference Result 4869 states and 6791 transitions. [2021-12-17 16:30:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-12-17 16:30:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:13,389 INFO L225 Difference]: With dead ends: 4869 [2021-12-17 16:30:13,389 INFO L226 Difference]: Without dead ends: 3227 [2021-12-17 16:30:13,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:13,392 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 70 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:13,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2021-12-17 16:30:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3093. [2021-12-17 16:30:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 3092 states have (on average 1.3835705045278137) internal successors, (4278), 3092 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 4278 transitions. [2021-12-17 16:30:14,735 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 4278 transitions. Word has length 97 [2021-12-17 16:30:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:14,735 INFO L470 AbstractCegarLoop]: Abstraction has 3093 states and 4278 transitions. [2021-12-17 16:30:14,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 4278 transitions. [2021-12-17 16:30:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:30:14,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:14,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:14,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 16:30:14,736 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 584515800, now seen corresponding path program 1 times [2021-12-17 16:30:14,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:14,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480118505] [2021-12-17 16:30:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:14,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:14,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:14,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480118505] [2021-12-17 16:30:14,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480118505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:14,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:14,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:14,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340654797] [2021-12-17 16:30:14,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:14,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:14,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:14,778 INFO L87 Difference]: Start difference. First operand 3093 states and 4278 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:17,280 INFO L93 Difference]: Finished difference Result 8865 states and 12212 transitions. [2021-12-17 16:30:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:30:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:17,292 INFO L225 Difference]: With dead ends: 8865 [2021-12-17 16:30:17,292 INFO L226 Difference]: Without dead ends: 5847 [2021-12-17 16:30:17,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:17,296 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 63 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:17,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 340 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-12-17 16:30:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 5581. [2021-12-17 16:30:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5581 states, 5580 states have (on average 1.3650537634408602) internal successors, (7617), 5580 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5581 states to 5581 states and 7617 transitions. [2021-12-17 16:30:19,795 INFO L78 Accepts]: Start accepts. Automaton has 5581 states and 7617 transitions. Word has length 98 [2021-12-17 16:30:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:19,795 INFO L470 AbstractCegarLoop]: Abstraction has 5581 states and 7617 transitions. [2021-12-17 16:30:19,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5581 states and 7617 transitions. [2021-12-17 16:30:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:30:19,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:19,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:19,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 16:30:19,797 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1344323197, now seen corresponding path program 1 times [2021-12-17 16:30:19,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:19,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671649157] [2021-12-17 16:30:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:19,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:19,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671649157] [2021-12-17 16:30:19,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671649157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:19,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:19,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:19,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203557427] [2021-12-17 16:30:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:19,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:19,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:19,834 INFO L87 Difference]: Start difference. First operand 5581 states and 7617 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:24,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:24,537 INFO L93 Difference]: Finished difference Result 16065 states and 21767 transitions. [2021-12-17 16:30:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:24,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:30:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:24,552 INFO L225 Difference]: With dead ends: 16065 [2021-12-17 16:30:24,553 INFO L226 Difference]: Without dead ends: 10559 [2021-12-17 16:30:24,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:24,559 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 53 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:24,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 338 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2021-12-17 16:30:28,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 10029. [2021-12-17 16:30:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10029 states, 10028 states have (on average 1.3399481451934583) internal successors, (13437), 10028 states have internal predecessors, (13437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10029 states to 10029 states and 13437 transitions. [2021-12-17 16:30:29,009 INFO L78 Accepts]: Start accepts. Automaton has 10029 states and 13437 transitions. Word has length 99 [2021-12-17 16:30:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:29,009 INFO L470 AbstractCegarLoop]: Abstraction has 10029 states and 13437 transitions. [2021-12-17 16:30:29,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 10029 states and 13437 transitions. [2021-12-17 16:30:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:30:29,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:29,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:29,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 16:30:29,011 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash -445596435, now seen corresponding path program 1 times [2021-12-17 16:30:29,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:29,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190212710] [2021-12-17 16:30:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:29,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:29,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:29,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190212710] [2021-12-17 16:30:29,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190212710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:29,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:29,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:29,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376472903] [2021-12-17 16:30:29,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:29,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:29,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:29,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:29,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:29,082 INFO L87 Difference]: Start difference. First operand 10029 states and 13437 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:36,363 INFO L93 Difference]: Finished difference Result 15535 states and 20744 transitions. [2021-12-17 16:30:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:30:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:30:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:36,389 INFO L225 Difference]: With dead ends: 15535 [2021-12-17 16:30:36,390 INFO L226 Difference]: Without dead ends: 15533 [2021-12-17 16:30:36,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:36,393 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 254 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:36,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 803 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15533 states. [2021-12-17 16:30:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15533 to 10269. [2021-12-17 16:30:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10269 states, 10268 states have (on average 1.322652902220491) internal successors, (13581), 10268 states have internal predecessors, (13581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10269 states to 10269 states and 13581 transitions. [2021-12-17 16:30:41,386 INFO L78 Accepts]: Start accepts. Automaton has 10269 states and 13581 transitions. Word has length 100 [2021-12-17 16:30:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:41,387 INFO L470 AbstractCegarLoop]: Abstraction has 10269 states and 13581 transitions. [2021-12-17 16:30:41,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 10269 states and 13581 transitions. [2021-12-17 16:30:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:30:41,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:41,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:41,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 16:30:41,388 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:41,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1981290545, now seen corresponding path program 1 times [2021-12-17 16:30:41,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:41,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809987951] [2021-12-17 16:30:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:41,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:41,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809987951] [2021-12-17 16:30:41,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809987951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:41,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:41,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:41,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759146782] [2021-12-17 16:30:41,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:41,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:41,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:41,443 INFO L87 Difference]: Start difference. First operand 10269 states and 13581 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:46,139 INFO L93 Difference]: Finished difference Result 20785 states and 27511 transitions. [2021-12-17 16:30:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:46,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:30:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:46,156 INFO L225 Difference]: With dead ends: 20785 [2021-12-17 16:30:46,156 INFO L226 Difference]: Without dead ends: 10591 [2021-12-17 16:30:46,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:46,167 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 86 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:46,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 280 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10591 states. [2021-12-17 16:30:51,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10591 to 10589. [2021-12-17 16:30:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10589 states, 10588 states have (on average 1.305723460521345) internal successors, (13825), 10588 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 13825 transitions. [2021-12-17 16:30:51,109 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 13825 transitions. Word has length 100 [2021-12-17 16:30:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:51,109 INFO L470 AbstractCegarLoop]: Abstraction has 10589 states and 13825 transitions. [2021-12-17 16:30:51,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 13825 transitions. [2021-12-17 16:30:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 16:30:51,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:51,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:51,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 16:30:51,112 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 642240657, now seen corresponding path program 1 times [2021-12-17 16:30:51,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648359809] [2021-12-17 16:30:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:51,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:51,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:51,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648359809] [2021-12-17 16:30:51,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648359809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:30:51,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742974104] [2021-12-17 16:30:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:51,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:30:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:30:51,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:30:51,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 16:30:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:51,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 16:30:51,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:30:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:52,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:30:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742974104] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:30:54,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:30:54,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2021-12-17 16:30:54,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17697113] [2021-12-17 16:30:54,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:30:54,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-17 16:30:54,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-17 16:30:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-12-17 16:30:54,245 INFO L87 Difference]: Start difference. First operand 10589 states and 13825 transitions. Second operand has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:34:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:34:47,183 INFO L93 Difference]: Finished difference Result 321132 states and 409884 transitions. [2021-12-17 16:34:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 714 states. [2021-12-17 16:34:47,184 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 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 127 [2021-12-17 16:34:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:34:48,049 INFO L225 Difference]: With dead ends: 321132 [2021-12-17 16:34:48,050 INFO L226 Difference]: Without dead ends: 310618 [2021-12-17 16:34:48,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253915 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=51762, Invalid=496578, Unknown=0, NotChecked=0, Total=548340 [2021-12-17 16:34:48,210 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 13712 mSDsluCounter, 5056 mSDsCounter, 0 mSdLazyCounter, 6367 mSolverCounterSat, 844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13712 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 7211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 6367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:34:48,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13712 Valid, 5459 Invalid, 7211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 6367 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-17 16:34:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310618 states. [2021-12-17 16:35:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310618 to 53369. [2021-12-17 16:35:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53369 states, 53368 states have (on average 1.2972005696297406) internal successors, (69229), 53368 states have internal predecessors, (69229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:35:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53369 states to 53369 states and 69229 transitions. [2021-12-17 16:35:19,309 INFO L78 Accepts]: Start accepts. Automaton has 53369 states and 69229 transitions. Word has length 127 [2021-12-17 16:35:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:35:19,310 INFO L470 AbstractCegarLoop]: Abstraction has 53369 states and 69229 transitions. [2021-12-17 16:35:19,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:35:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 53369 states and 69229 transitions. [2021-12-17 16:35:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 16:35:19,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:35:19,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:35:19,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 16:35:19,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-17 16:35:19,536 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:35:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:35:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash -895889741, now seen corresponding path program 1 times [2021-12-17 16:35:19,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:35:19,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676553656] [2021-12-17 16:35:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:35:19,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:35:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:35:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:35:19,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:35:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676553656] [2021-12-17 16:35:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676553656] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:35:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331061574] [2021-12-17 16:35:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:35:19,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:35:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:35:19,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:35:19,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 16:35:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:35:19,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 16:35:19,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:35:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:35:20,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:35:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:35:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331061574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:35:21,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:35:21,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2021-12-17 16:35:21,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378564409] [2021-12-17 16:35:21,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:35:21,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-17 16:35:21,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:35:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-17 16:35:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:35:21,695 INFO L87 Difference]: Start difference. First operand 53369 states and 69229 transitions. Second operand has 27 states, 27 states have (on average 12.62962962962963) internal successors, (341), 27 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)